REG-Base Resources Limited: Tanzanian exploration – Umba South Phase 1 drill results
09/05/2023 07:15
AIM and Media Release
8 May 2023
BASE RESOURCES LIMITED
Tanzanian exploration – Umba South Phase 1 drill results
Key Points
* Phase 1 reverse circulation drilling program completed at the Umba South
prospect in northern Tanzania, with 3,015m in 122 holes drilled.
* Assay results confirm the presence of rutile mineralisation, which averages
approximately 20% of the heavy mineral but is highly variable and can range
from 5 to 50% of the heavy mineral.
* Three primary geological domains were identified: * Soil/colluvial cover
sequence (the primary exploration target) – typically quite thin (~1-2m) but
can be locally up to 9m thick and has demonstrated widespread rutile
mineralisation.
* Underlying saprolite material – variable thickness with sporadic rutile
mineralisation, and does not appear to be sufficiently weathered to represent
free-dig material from which rutile is readily liberated.
* Bedrock - heavy mineral content is variable but typically high grade (~20%);
however it is dominated by pyrite - a known deleterious element for mineral
sands processing, requiring dedicated tailings handling and storage.
* Preliminary mineralogical assessment of drill samples is yet to be
completed, with the presence of rutile calculated based on XRF analysis of the
non-magnetic fraction of heavy mineral.
* While graphite is present in some drill samples, analysis suggests the
overall grade and distribution of mineralisation is not significant.
* A Phase 2 infill drilling program to assess the continuity of saprolite
mineralisation has been completed, with the results expected to be available
in the September 2023 quarter. These results will assist in planning future
exploration activity at Umba South and elsewhere along the prospective
geological zone once necessary approvals are obtained.
Base Resources Limited (ASX & AIM: BSE) (Base Resources or the Company) is
pleased to provide assay results from the first phase of drilling at its Umba
South Project (Umba South) in northern Tanzania (Phase 1).
Figures referenced in this release have been omitted. A full PDF version of
this release, including all figures, is available from the Company’s
website: www.baseresources.com.au. A glossary of key terms used in this
release is set out at the end of this release.
Location of Phase 1 drilling and other exploration activities
Umba South is located near the junction of the Umba and Bombo Rivers in
northern Tanzania, approximately 75km west-south-west of the Company’s Kwale
Operations in Kenya (refer to Figure 1). Exploration at Umba South was
designed to test the southern extremity of a prominent north-south trending
ridge of quartzite and gneiss that extends 35km north to the Kuranze region of
Kenya, where initial rock chip and soil sampling indicated the presence of
rutile. With the Company unable to carry out exploration activities in
Kuranze due to its prospecting licence applications for that area being on
hold following the Government of Kenya’s ongoing moratorium on issuance of
new mineral rights, efforts were instead directed to the southern portion of
the ridge in Tanzania.
Exploration activity in Tanzania has so far been confined to areas south of
the Umba River, while the Company seeks to obtain the necessary approvals from
various government departments to explore in the Mkomazi Game Controlled Area
to the north which hosts the target ridge feature extending north to the
Kenyan border (refer to Figure 2).
Details about exploration activities
Exploration at Umba South targeted a high-grade metamorphic sequence within
the Mozambique Belt that comprises paragneiss (quartzo-feldspathic gneiss) and
sillimanite-kyanite(-garnet) schists. The sequence includes accessory
minerals pyrite, rutile, magnetite and graphite, with rutile the primary
exploration target. The focus of exploration is secondary rutile
mineralisation associated with alluvial and colluvial deposits eroding from
the outcropping linear ridges of pyritic quartz-feldspar gneiss, and primary
rutile mineralisation within the weathered saprolite material flanking the
ridge feature that is sufficiently weathered to represent free-dig material
from which rutile can be readily liberated.
In early 2022, mechanised auger sampling of the soil profile to approximately
1m depth on a 500m x 500m sample grid was undertaken across the broader
tenement area, with the best results (up to 5% rutile) reported from the
flanks of Kigwase Hill. In the June quarter of 2022, rockchip sampling of
the outcropping ridge confirmed the presence of rutile mineralisation, with
grades of up to 2.5% rutile reported from banded gneiss on Kigwase Hill.
Selected rockchip samples were sent for mineralogical analysis, and this
confirmed the presence of rutile together with pyrite (in fresh samples),
Fe-oxides (in weathered samples), magnetite and altered ilmenite.
A series of test pits were then completed to assess the soil profile,
including the nature of contact with the underlying saprolite. Mapping
suggests that red-brown soil is typically developed within rubbly colluvium
overlying the brown saprolite material. Pit depths ranged from 1.5m to 6.5m
and samples of material collected from the test pits were processed at the
Kwale Operations laboratory. Encouraging results were obtained from several
samples with potential HM products of rutile, leucoxene, altered ilmenite and
magnetite generated using conventional mineral sands processing techniques.
One of the test pits, pit 11, was investigated in detail and reported
in-situ grades of approximately 1% rutile, 1% leucoxene-altered ilmenite and
1% magnetite (refer to Figure 2).
Following the encouraging results from the reconnaissance exploration, the
Phase 1 program was planned to obtain preliminary data regarding the
sub-surface geology and rutile mineralisation in the vicinity of Kigwase Hill.
A 400m North-South x 200m East-West reconnaissance grid was subsequently
drilled over Kigwase Hill where access was available, with the terrain and the
presence of small-scale gemstone tenure (known as primary mining licences)
restricting complete coverage (refer to Figure 3 for the drill hole collar
locations). A total of 122 holes were drilled for 3,015m using a RC drill
rig with a hammer bit, primarily due to lack of available aircore drill rigs
and concerns regarding the ability of aircore to penetrate both the rubbly
colluvium and the saprolite. As a result of the drill samples being
mechanically pulverised by the hammer bit, the slimes content of samples is
likely to be overstated, the oversize content is likely understated, and the
sand fraction likely contains mechanically generated sand together with
natural sand.
Results from Phase 1 drilling
The sample analysis for rutile has been completed on the sand fraction using
conventional mineral sands techniques (and back-calculated for in-situ
grades). There is the potential that rutile assays reported may not reflect
true in-situ grade and/or represent rutile that is readily amenable to
conventional mineral sands processing. Analysis of selected oversize
fractions confirmed significant rutile is present in the oversize. For holes
TN092 to TN122, the oversize fraction from the first stage of sample
processing was crushed and added to the sand fraction prior to HM analysis –
such that these holes report a “total” rutile grade (assuming no loss to
the slimes fraction), whereas holes TN001 to TN091 report only the rutile from
the sand fraction and may therefore only be a “partial” rutile grade.
Drill logging has identified three primary geological domains, as follows:
* Red-brown soil and colluvium with abundant gravel – typically 1-2m thick
on the eastern flank of Kigwase Hill and 2-4m thick on the western flank of
Kigwase Hill. Consistently mineralised and reports high levels of
ferruginous HM and significant TiO(2) in the magnetic fraction. The HM is
enriched in the upper part of the profile. This domain is confirmed as a
viable exploration target for the province, but lacks the depth/thickness at
Umba South to have significant economic potential.
* Brown saprolite and saprock – weathered bedrock, subdivided into sandy and
clayey units. It is thought that this reflects the protolith (quartz rich vs
feldspar rich), rather than weathering intensity as there is limited evidence
for a well-developed chemical weathering profile with remobilisation and
volume reduction. Depth of weathering ranges down to 50m but is typically
~30m distal to the ridge, and localised variability is evident. The HM
content is highly variable, and often variable HM magnetic fractions both down
and between holes. The saprolite is considered a viable exploration target
for the province, but at Umba South it appears to lack the consistent intense
weathering that concentrates rutile in the upper profile and promotes free dig
mining and simple processing.
* Grey bedrock – fresh gneiss, typically with abundant pyrite. Garnet
gneiss logged distal to the ridge, but logging has not attempted to classify
the bedrock lithology in detail. The HM content is variable but typically
high grade (~20% HM) although dominated by pyrite. The bedrock is not
considered a viable exploration target for rutile due to cost and complexity
that would be introduced by hard rock mining and comminution, and the negative
impact of pyrite mineralisation on mineral processing recoveries and tails
storage – with results only reported for geological interest.
Set out in the table below are notable hole intercepts. Due to the
variability of mineralisation between the geological domains – and potential
mining, mineral processing and tailings handling and storage implications –
the rutile mineralisation has been reported by domain and not by total hole
intercepts. For a list of all Phase 1 assay results, refer to Table 1 in
Appendix 1. Refer also to the cross sections in Figures 4 to 6 for a
detailed rutile HM analysis of each drill hole.
Notable drill hole intercepts
Colluvium Saprolite Bedrock
* TN042 - 8m at 1.39% rutile from surface * TN038 - 15m at 2.54% rutile from 18m * TN015 - 4m at 3.48% rutile from 18m
* TN094 - 4m at 1.40% rutile from surface * TN011 - 10m at 2.55% rutile from 13m * TN009 - 9m at 1.52% rutile from 10m
* TN095 - 4m at 1.24% rutile from surface * TN015 - 11m at 1.99% rutile from 7m * TN056 - 6m at 2.11% rutile from 20m
* TN093 - 3m at 1.50% rutile from surface * TN051 - 17.5m at 1.15% rutile from 0.5m
* TN039 - 7m at 2.02% rutile from 6m
* TN056 - 6m at 2.02% rutile from 13m
Graphite is a common accessory mineral within the paragneiss sequence being
explored and is routinely observed during panning and logging of the drill
samples. Approximately 320 samples from all geological domains were randomly
selected for analysis to assess the graphite mineralisation potential, with
around a third of samples reporting below detection and the remainder
averaging around 0.5% Total Graphitic Carbon including peak values up to 2.5%
TGC. The graphite mineralisation is not typically coincident with rutile
mineralisation and appears confined to specific stratigraphic units within the
drilled sequence. Preliminary assessment suggests that graphite does not
represent a viable exploration target due to unfavourable grade and
distribution of mineralisation but may have value as a potential co-product
where it occurs coincident with rutile.
For further details in respect of the results, refer to the Appendices to this
release, containing a table of all assay results (refer to Appendix 1) and
information provided for the purposes of Sections 1 and 2 of Table 1 of the
JORC Code (refer to Appendix 2).
Phase 2 infill drilling and further planned activities
With the Phase 1 program drill spacing unable to establish geological and
grade continuity of saprolite mineralisation, an infill drilling program was
undertaken in the first quarter of 2023, with 86 holes drilled for 2,128m
(Phase 2). Assay results from Phase 2 are expected to be available in the
September quarter of 2023, due to delays associated with the export of samples
from Tanzania to Kenya and prioritisation of operational assay requirements
and near-mine exploration assays at the Kwale Operations laboratory. The
Phase 2 results should provide the Company with a more fulsome understanding
of the Umba South mineralisation, which will assist in planning future
exploration activity at Umba South and elsewhere along the prospective
geological zone.
Other further work planned includes:
* Geostatistical assessment of data to establish grade continuity parameters.
* A program of shallow trenching to expose the saprolite and conduct rock chip
channel sampling, geological mapping, and collection of saprolite samples to
assess physical properties related to mining and processing characteristics.
* Seek to progress approvals to allow exploration access to granted
prospecting licences north of the Umba River, particularly PL11686/2021, and
conduct reconnaissance exploration in this area to establish if broad areas of
rutile mineralisation are present within either colluvial/alluvial material
shedding from the prospective ridge line, or strongly weathered saprolite
associated with the targeted prospective zone.
Competent Person’s Statement
The information in this release that relates to the Umba South exploration
results is based on, and fairly represents, information and supporting
documentation prepared by Mr. Ian Reudavey. Mr. Reudavey is a member of the
Australasian Institute of Geoscientists. Mr. Reudavey is employed by Base
Resources. Mr. Reudavey has sufficient experience that is relevant to the
style of mineralisation and type of deposit under consideration and to the
activity which he is undertaking to qualify as a Competent Person as defined
in the JORC Code and as Qualified Person for the purposes of the AIM Rules for
Companies. Mr. Reudavey has reviewed this release and consents to the
inclusion in this release of the Umba South exploration results and the
supporting information in the form and context in which the relevant
information appears.
Appendix 1
Table 1: Umba South Exploration Project drill hole table. All drill holes
have dip of -90 degrees and azimuth of 360 degrees (i.e. vertical).
Section N Hole ID Easting Northing RL SRTM Survey Hole Depth Unit Interval From To HM (%) Rut (%)
9500978 TN001 474096 9500978 222 HHGPS 8 TOTAL 8 0 8 - NSR
TN002 473895 9500977 219 HHGPS 17 TOTAL 17 0 17 - NSR
TN003 473297 9500983 234 HHGPS 19 TOTAL 19 0 19 - NSR
TN004 473098 9500980 242 HHGPS 13 TOTAL 13 0 13 - NSR
9500578 TN005 473494 9500579 233 HHGPS 13 TOTAL 13 0 13 - NSR
TN006 473696 9500578 228 HHGPS 4 TOTAL 4 0 4 - NSR
TN007 473897 9500576 238 HHGPS 28 TOTAL 28 0 28 - NSR
TN008 474091 9500583 245 HHGPS 11 TOTAL 11 0 11 - NSR
TN009 474293 9500578 239 HHGPS 19 CS 1 0 1 5.9 0.75
SAP 9 1 10 5.3 0.89
BDR 9 10 19 22.3 1.52
TOTAL 19 0 19 13.4 1.18
TN117 475491 9500576 225.5 HHGPS 19 TOTAL 19 0 19 - NSR
TN118 475297 9500582 227.5 HHGPS 13 TOTAL 11 - NSR
TN119 475096 9500575 230 HHGPS 22 TOTAL 22 0 22 - NSR
TN120 474901 9500579 231.5 HHGPS 19 TOTAL 19 0 19 - NSR
9500178 TN010 474297 9500174 260.5 HHGPS 22 TOTAL 22 0 22 - NSR
TN011 474499 9500183 253.5 HHGPS 32 CS 1 0 1 7.2 1.32
SAP 12 1 13 - NSR
SAP 11 13 24 8.0 2.34
including SAP 10 13 23 8.6 2.55
BDR 8 24 32 - NSR
TOTAL 32 0 32 6.0 0.99
TN012 474701 9500175 246.5 HHGPS 22 TOTAL 22 0 22 - NSR
TN013 475095 9500180 239 HHGPS 28 TOTAL 28 0 28 - NSR
TN112 475298 9500179 234 HHGPS 40 TOTAL 40 0 40 - NSR
TN113 475497 9500186 231 HHGPS 20 TOTAL 20 0 20 - NSR
TN114 475696 9500180 224.5 HHGPS 18 TOTAL 18 0 18 - NSR
TN115 475885 9500183 218 HHGPS 19 TOTAL 19 0 19 - NSR
TN116 476095 9500179 213 HHGPS 11 TOTAL 11 0 11 - NSR
TN121 473698 9500171 251.5 HHGPS 19 CS 1 0 1 - NSR
SAP 9 1 10 - NSR
SAP 5 10 15 33.6 1.60
BDR 4 15 19 - NSR
TOTAL 19 0 19 29.5 0.73
TN122 473498 9500174 236.5 HHGPS 14 TOTAL 14 0 14 - NSR
9499778 TN014 475096 9499786 244 HHGPS 25 TOTAL 25 0 25 - NSR
TN015 474700 9499779 255 HHGPS 22 CS 1 0 1 - NSR
SAP 17 1 18 35.6 1.48
including SAP 11 7 18 8.9 1.99
BDR 4 18 22 34.4 3.48
TOTAL 22 0 22 19.6 1.78
TN016 474501 9499785 261 HHGPS 28 TOTAL 28 0 28 - NSR
TN017 474296 9499775 272 HHGPS 20 CS 1 0 1 9.4 1.00
SAP 12 1 13 4.7 0.78
including SAP 9 4 13 5.6 0.91
SAP 5 13 18 - NSR
BDR 2 18 20 - NSR
TOTAL 20 0 20 - NSR
9499378 TN018 474460 9499377 273.5 HHGPS 7 CS 1 0 1 5.9 0.98
SAP 2 1 3 11.9 1.00
BDR 4 3 7 15.8 0.77
TOTAL 7 0 7 14.4 0.86
TN019 474696 9499380 259.5 HHGPS 16 CS 1 0 1 56.3 1.87
SAP 11 1 12 13.9 0.77
including SAP 2 7 9 10.7 1.43
BDR 4 12 16 20.9 0.89
TOTAL 16 0 16 18.3 0.87
TN020 475097 9499384 244 HHGPS 32 TOTAL 32 0 32 - NSR
TN021 475301 9499370 238 HHGPS 26 CS 1 0 1 - NSR
SAP 21 1 22 8.0 0.25
including SAP 3 1 4 5.2 0.95
BDR 4 22 26 - NSR
TOTAL 26 0 26 - NSR
TN035 475499 9499375 227 HHGPS 19 TOTAL 19 0 19 - NSR
TN099 473491 9499373 253 HHGPS 38 CS 7 0 7 1.9 0.29
including CS 2 0 2 4.0 0.72
SAP 27 7 34 - NSR
BDR 4 34 38 - NSR
TOTAL 38 0 38 - NSR
TN108 473299 9499383 246.5 HHGPS 28 TOTAL 28 0 28 - NSR
TN109 473097 9499375 255.5 HHGPS 31 TOTAL 31 0 31 - NSR
TN110 473693 9499377 261 HHGPS 33 CS 8 0 8 4.7 0.78
including CS 3 0 3 7.2 1.41
SAP 21 8 29 - NSR
BDR 4 29 33 - NSR
TOTAL 33 0 33 - NSR
TN111 474088 9499373 275 HHGPS 20 CS 1 0 1 21.4 1.90
SAP 16 1 17 - NSR
BDR 3 17 20 - NSR
TOTAL 20 0 20 - NSR
9498978 TN022 475299 9498977 229 HHGPS 17 CS 6 0 6 - NSR
SAP 8 6 14 17.2 0.60
including SAP 4 6 10 16.5 0.82
BDR 3 14 17 - NSR
TOTAL 17 0 17 - NSR
TN023 475098 9498967 235 HHGPS 25 CS 5 0 5 7.1 0.67
including CS 3 0 3 6.9 0.84
SAP 17 5 22 - NSR
BDR 2 22 25 - NSR
TOTAL 25 0 25 - NSR
TN024 474890 9498980 248 HHGPS 24 CS 3 0 3 6.7 1.24
SAP 17 3 20 - NSR
BDR 4 20 24 - NSR
TOTAL 24 0 24 - NSR
TN025 474715 9498970 256.5 HHGPS 13 CS 1 0 1 4.5 0.93
SAP 8 1 9 4.7 0.53
including SAP 4 3 7 5.0 0.92
BDR 4 9 13 - NSR
TOTAL 13 0 13 - NSR
TN026 474501 9498979 275 HHGPS 3 CS 0.5 0 1 12.4 1.96
BDR 2.5 0.5 3 25.9 2.14
TOTAL 3 0 3 23.6 2.11
TN032 475495 9498978 225.5 HHGPS 16 TOTAL 16 0 16 - NSR
TN033 475696 9498976 223 HHGPS 14 TOTAL 14 0 14 - NSR
TN034 475832 9498981 225 HHGPS 19 TOTAL 19 0 19 - NSR
TN096 473495 9498973 264 HHGPS 44 CS 6 0 6 3.8 0.60
including CS 2 0 2 6.8 1.07
SAP 34 6 40 10.8 0.39
including SAP 4 6 10 5.5 0.83
including SAP 3 37 40 46.0 0.79
BDR 4 40 44 - NSR
TOTAL 44 0 44 - NSR
TN097 473690 9498974 269 HHGPS 40 CS 8 0 8 4.3 0.44
including CS 1 0 1 10.0 1.14
SAP 27 8 35 7.4 0.49
including SAP 10 10 20 5.8 0.89
BDR 5 35 40 35.2 1.63
TOTAL 40 0 40 - NSR
TN098 473899 9498982 271.5 HHGPS 51 CS 5 0 5 8.8 0.57
including CS 2 0 2 14.1 0.84
SAP 42 5 47 - NSR
BDR 4 47 51 - NSR
TOTAL 51 0 51 - NSR
TN100 473297 9498979 256.5 HHGPS 36 TOTAL 36 0 36 - NSR
TN101 473092 9498973 257 HHGPS 31 TOTAL 31 0 31 - NSR
TN102 472902 9498980 256.5 HHGPS 31 CS 5 0 5 1.0 0.25
including CS 1 0 1 2.7 0.86
SAP 22 5 27 - NSR
BDR 4 27 31 28.1 1.33
TOTAL 31 0 31 - NSR
9498578 TN027 474695 9498578 266 HHGPS 22 CS 1 0 1 7.5 0.71
SAP 17 1 18 - NSR
BDR 4 18 22 25.4 1.00
TOTAL 18 0 18 - NSR
TN028 474899 9498575 254 HHGPS 42 CS 1 0 1 7.1 1.18
SAP 4 1 42 - NSR
TOTAL 42 0 42 - NSR
TN029 475099 9498577 241 HHGPS 25 CS 2 0 2 6.9 0.58
including CS 1 0 1 9.8 0.97
SAP 21 1 22 - NSR
BDR 3 22 25 - NSR
TOTAL 25 0 25 - NSR
TN030 475297 9498577 229.5 HHGPS 16 CS 1 0 1 - NSR
SAP 10 1 11 - NSR
BDR 5 11 16 15.0 0.61
including BDR 2 11 13 18.2 1.10
TOTAL 16 0 16 14.2 0.51
TN031 475427 9498515 226 HHGPS 23 TOTAL 23 0 23 - NSR
TN092 473296 9498579 266.5 HHGPS 40 CS 7 0 7 - NSR
SAP 29 7 36 5.7 0.47
including SAP 10 19 29 11.6 1.03
BDR 4 36 40 - NSR
TOTAL 40 0 40 - NSR
TN093 473492 9498573 271 HHGPS 43 CS 7 0 7 4.5 0.81
including CS 3 0 3 7.3 1.50
SAP 33 7 40 - NSR
BDR 3 40 43 - NSR
TOTAL 43 0 43 - NSR
TN094 473696 9498579 276 HHGPS 36 CS 6 0 6 6.1 1.05
including CS 4 0 4 7.6 1.40
SAP 25 6 31 5.9 0.65
including SAP 5 6 11 3.4 0.70
including SAP 14 17 31 7.0 0.81
BDR 2 34 36 40.7 2.25
TOTAL 36 0 36 8.7 0.79
TN095 473897 9498579 286.5 HHGPS 48 CS 7 0 7 6.1 0.92
including CS 4 0 4 7.3 1.24
SAP 37 7 44 6.8 0.30
including SAP 9 13 22 18.0 0.78
BDR 4 44 48 - NSR
TOTAL 48 0 48 - NSR
TN103 472898 9498579 265 HHGPS 34 CS 7 0 7 3.0 0.47
including CS 3 0 3 3.0 0.89
SAP 23 7 30 - NSR
BDR 4 30 34 - NSR
TOTAL 34 0 34 - NSR
TN104 473092 9498576 265.5 HHGPS 31 TOTAL 31 0 31 - NSR
9498178 TN036 475096 9498177 242.5 HHGPS 25 CS 4 0 4 6.6 0.46
including CS 1 0 1 15.2 1.29
SAP 17 4 21 - NSR
BDR 4 21 25 - NSR
TOTAL 25 0 25 - NSR
TN037 475295 9498179 233.5 HHGPS 16 TOTAL 16 0 16 - NSR
TN038 474899 9498176 250 HHGPS 46 CS 1 0 1 - NSR
SAP 38 1 39 3.0 1.13
including SAP 15 18 33 5.3 2.54
BDR 7 39 46 - NSR
TOTAL 46 0 46 3.6 0.96
TN039 474699 9498179 265.5 HHGPS 21 CS 1 0 1 5.0 0.98
SAP 15 1 16 3.7 1.21
including SAP 7 6 13 5.4 2.02
BDR 5 16 21 - NSR
TOTAL 21 0 21 5.7 1.06
TN088 473490 9498175 275 HHGPS 49 CS 5 0 5 4.0 0.58
including CS 2 0 2 5.7 0.98
SAP 41 5 46 - NSR
BDR 3 46 49 - NSR
TOTAL 49 0 49 - NSR
TN089 473697 9498177 282 HHGPS 54 CS 9 0 9 5.4 0.76
including CS 3 0 3 7.8 1.06
SAP 39 9 48 - NSR
BDR 6 48 54 - NSR
TOTAL 54 0 54 - NSR
TN090 473893 9498179 289 HHGPS 16 CS 2 0 2 8.7 1.69
SAP 10 2 12 3.6 0.65
including SAP 6 2 8 4.3 0.82
BDR 4 12 16 23.2 1.28
TOTAL 16 0 16 9.1 0.94
TN091 474095 9498176 307 HHGPS 23 TOTAL 23 0 23 - NSR
TN105 473295 9498177 273 HHGPS 17 TOTAL 17 0 17 - NSR
TN106 473089 9498176 271 HHGPS 19 CS 1 0 1 11.2 0.87
SAP 15 1 16 - NSR
BDR 3 16 19 - NSR
TOTAL 19 0 19 - NSR
TN107 472897 9498177 271 HHGPS 34 TOTAL 34 0 34 - NSR
9497778 TN040 475094 9497776 242 HHGPS 30 TOTAL 30 0 30 - NSR
TN041 474895 9497776 254 HHGPS 40 CS 5 0 5 5.4 0.55
including CS 1 0 1 18.1 1.43
SAP 29 5 34 - NSR
BDR 6 34 40 29.1 0.79
TOTAL 40 0 40 - NSR
TN042 474695 9497779 262 HHGPS 25 CS 8 0 8 6.1 1.39
SAP 12 8 20 6.2 0.51
including SAP 3 8 11 3.1 0.85
BDR 5 20 25 15.9 0.71
TOTAL 25 0 25 8.1 0.83
TN043 474493 9497771 278 HHGPS 7 CS 4 0 4 13.5 0.66
including CS 3 0 3 16.8 0.83
BDR 3 4 7 20.4 1.29
TOTAL 7 0 7 16.4 0.93
TN044 475289 9497777 235 HHGPS 19 TOTAL 19 0 19 - NSR
TN081 473894 9497776 285 HHGPS 26 CS 2 0 2 6.0 0.92
SAP 20 2 22 12.9 0.47
including SAP 3 17 21 13.5 0.79
BDR 4 22 26 - NSR
TOTAL 26 0 26 - NSR
TN082 474093 9497777 300 HHGPS 19 CS 1 0 1 8.9 0.80
SAP 14 1 15 - NSR
BDR 4 15 19 - NSR
TOTAL 19 0 19 - NSR
TN083 473695 9497777 281.5 HHGPS 52 CS 2 0 2 6.1 1.42
SAP 46 2 48 - NSR
BDR 4 48 52 - NSR
TOTAL 52 0 52 - NSR
TN084 473494 9497780 276 HHGPS 57 CS 2 0 2 7.0 1.00
SAP 49 3 52 - NSR
BDR 5 52 57 - NSR
TOTAL 57 0 57 - NSR
TN085 473295 9497775 270.5 HHGPS 31 CS 2 0 2 - NSR
SAP 25 2 27 8.3 0.46
including SAP 7 16 23 12.9 0.83
BDR 4 27 31 - NSR
TOTAL 31 0 31 - NSR
TN086 473094 9497777 272 HHGPS 25 TOTAL 25 0 25 - NSR
TN087 472897 9497777 273 HHGPS 31 CS 1 0 1 5.3 1.00
SAP 26 1 27 - NSR
BDR 4 27 31 - NSR
TOTAL 31 0 31 - NSR
9497378 TN045 475098 9497377 236 HHGPS 22 TOTAL 22 0 22 - NSR
TN046 475293 9497373 230 HHGPS 15 TOTAL 15 0 15 - NSR
TN047 474896 9497377 244 HHGPS 16 CS 1 0 1 11.2 1.71
SAP 9 1 10 11.1 0.72
including SAP 5 1 6 10.2 0.81
BDR 6 10 16 33.3 1.32
TOTAL 16 0 16 19.4 1.01
TN048 475294 9497371 230 HHGPS 16 TOTAL 16 0 16 - NSR
TN049 474695 9497378 252 HHGPS 16 CS 1 0 1 6.6 1.73
SAP 8 1 9 4.8 1.09
BDR 7 9 16 20.4 1.00
TOTAL 16 0 16 11.7 1.09
TN050 474493 9497371 267 HHGPS 10 CS 1 0 1 9.4 1.22
SAP 5 1 6 6.7 1.35
BDR 4 6 10 19.0 1.43
TOTAL 10 0 10 11.9 1.37
TN075 473099 9497377 270 HHGPS 30 CS 4 0 4 1.5 0.35
including CS 1 0 1 2.4 0.74
SAP 22 4 26 - NSR
BDR 4 26 30 - NSR
TOTAL 30 0 30 - NSR
TN076 473297 9497376 271 HHGPS 31 TOTAL 31 0 31 - NSR
TN077 473495 9497377 270.5 HHGPS 41 CS 3 0 3 5.9 0.62
including CS 2 0 2 6.0 0.92
SAP 33 3 36 - NSR
BDR 5 36 41 - NSR
TOTAL 41 0 41 - NSR
TN078 473694 9497378 273.5 HHGPS 46 CS 9 0 9 9.6 0.62
including CS 2 0 2 9.6 2.06
SAP 33 9 42 - NSR
BDR 4 42 46 - NSR
TOTAL 46 0 46 - NSR
TN079 473892 9497382 281 HHGPS 33 CS 2 0 2 8.5 2.06
SAP 26 2 28 - NSR
BDR 5 28 33 - NSR
TOTAL 33 0 33 - NSR
TN080 474090 9497375 286 HHGPS 4 SAP 1 0 1 9.9 0.73
BDR 3 1 4 21.0 1.27
TOTAL 4 0 4 18.2 1.13
9496978 TN051 474494 9496976 254 HHGPS 23 CS 0.5 0 1 10.4 2.38
SAP 17.5 0.5 18 5.0 1.15
BDR 5 18 23 26.7 1.85
TOTAL 23 0 23 9.9 1.35
TN052 474693 9496976 243.5 HHGPS 16 CS 1 0 1 9.1 1.49
SAP 10 1 11 - NSR
BDR 5 11 16 - NSR
TOTAL 16 0 16 - NSR
TN053 474867 9496978 233 HHGPS 13 TOTAL 13 0 13 - NSR
TN054 475099 9496983 232 HHGPS 13 TOTAL 13 0 13 - NSR
TN055 474290 9496973 265 HHGPS 13 CS 1 0 1 7.2 2.19
SAP 8 1 9 6.7 0.84
BDR 4 9 13 20.8 1.04
TOTAL 13 0 13 11.1 1.01
TN056 474090 9496978 264 HHGPS 26 CS 1 0 1 7.6 1.52
SAP 19 1 20 6.4 0.94
including SAP 6 13 19 14.2 2.02
BDR 6 20 26 30.2 2.11
TOTAL 26 0 26 12.0 1.23
TN057 473897 9496976 265 HHGPS 27 CS 2 0 2 - NSR
SAP 20 2 22 11.0 0.45
including SAP 3 14 17 15.2 1.05
BDR 5 22 27 - NSR
TOTAL 27 0 27 - NSR
TN058 473697 9496978 261 HHGPS 30 CS 4 0 4 6.2 0.94
including CS 2 0 2 8.7 1.60
SAP 21 4 25 - NSR
BDR 5 25 30 - NSR
TOTAL 30 0 30 - NSR
TN059 473496 9496975 258 HHGPS 33 TOTAL 33 0 33 - NSR
TN060 473296 9496976 261 HHGPS 34 TOTAL 34 0 34 - NSR
TN073 473095 9496978 263 HHGPS 32 TOTAL 32 0 32 - NSR
TN074 472899 9496976 263 HHGPS 30 TOTAL 30 0 30 - NSR
9496578 TN061 473496 9496575 253.5 HHGPS 25 TOTAL 25 0 25 - NSR
TN062 473698 9496572 254 HHGPS 25 CS 4 0 4 3.6 0.60
including CS 2 0 2 5.3 1.12
SAP 16 4 20 - NSR
BDR 5 20 25 - NSR
TOTAL 25 0 25 - NSR
TN063 473891 9496579 253.5 HHGPS 22 CS 2 0 2 - NSR
SAP 15 2 17 8.4 0.38
including SAP 2 15 17 17.2 1.31
BDR 5 17 22 17.7 1.50
including BDR 3 19 22 20.6 2.13
TOTAL 22 0 22 - NSR
TN064 474093 9496571 249 HHGPS 25 CS 2 0 2 11.5 0.92
SAP 19 2 21 - NSR
BDR 4 21 25 - NSR
TOTAL 25 0 25 - NSR
TN065 474295 9496576 251 HHGPS 19 CS 2 0 2 12.5 1.00
SAP 13 2 15 6.0 0.53
including SAP 2 2 4 9.7 0.74
BDR 4 15 19 24.7 1.09
TOTAL 19 0 19 11.4 0.71
TN066 474495 9496573 244.5 HHGPS 22 CS 2 0 2 9.4 1.18
SAP 15 2 17 - NSR
BDR 5 17 22 - NSR
TOTAL 22 0 22 - NSR
TN067 474700 9496575 238 HHGPS 20 TOTAL 20 0 20 - NSR
TN068 474833 9496578 233 HHGPS 11 TOTAL 11 0 11 - NSR
9496178 TN069 474698 9496173 235 HHGPS 16 TOTAL 16 0 16 - NSR
TN070 474497 9496176 243 HHGPS 15 TOTAL 15 0 15 - NSR
TN071 474300 9496182 245 HHGPS 22 TOTAL 22 0 22 - NSR
TN072 474095 9496179 243 HHGPS 22 TOTAL 22 0 22 - NSR
Appendix 2
JORC Code, 2012 Edition
Section 1 Sampling Techniques and Data
Criteria Explanation Comment
Sampling techniques Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under Reverse circulation hammer drilling was used to obtain 1m samples from which approximately 2.0 kg was riffle split to produce a sub-sample for HM analysis utilizing heavy liquid separation, magnetic separation and XRF assay. All holes were sampled over consistent 1m intervals. All holes were drilled using a reverse circulation method to collect 25% of the sample via cyclone separation of drill returns with a 4-way splitter attachment at the base of the cyclone discharging into a calico bag. Samples are collected from alternate discharge chutes of the splitter, and assessment of duplicate samples collected at routine intervals show that no bias is evident from the cyclone splitter. Samples were analysed by mineral sands industry standard techniques of screening, desliming and heavy liquid separation using SPT (sodium polytungstate: SG = 2.85g/cm (3)). XRF analysis of HM magnetic fractions was used to define the VHM content.
investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. Include
reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. Aspects of the determination of
mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation
drilling was used to obtain 1m samples from which 3kg was pulverised to produce a 30g charge for fire assay’). In other cases more explanation may be required, such as
where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed
information.
Drilling techniques Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth All drilling was undertaken using a Smith Capital 10R3H track mounted reverse circulation drill rig operated by Amazon Mineworks Tanzania. All holes were drilled vertically, with the drill rig levelled using hydraulic jacks. Drill rod diameter is 4 (1)/ (2)” with 3m rods fitted with a face sampling 5 (3)/ (8)” button hammer bit.
of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc).
Drill sample recovery Method of recording and assessing core and chip sample recoveries and results assessed. Measures taken to maximise sample recovery and ensure representative nature of Sample size is monitored by the rig geologist and logged quantitatively as either good, moderate or poor, with good meaning not contaminated and appropriate sample size (recovery), moderate meaning not contaminated, but sample over or under sized, and poor meaning contaminated or grossly over/undersized. Samples from the Phase 1 drilling at Umba South were logged as ~80% dry good, ~16% dry poor and ~3% moist good. The drill rig uses a face sampling pneumatic hammer bit and operates at air pressures of 24 Bar and low rotation speeds (45-65 rpm) to maximize sample recovery. There is no correlation evident between sample recovery and grade, resulting in no sample bias.
the samples. Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse
material.
Logging Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and All samples were visually checked and logged on site by the rig geologist and logged for lithotype, grain size, colour, hardness, and moisture content. A small subsample was taken for each drill interval and manually panned for estimation of slimes and HM content. Any relevant comments e.g., water table, gangue HM components and stratigraphic markers were included to aid in the subsequent geological modelling. The use of a pneumatic hammer bit is believed to have modified the grain size characteristics of the sample, with potential overstatement of slimes content and understatement of the oversize fraction. The drilling technique makes logging and assessment of the geotechnical parameters of the material unreliable.
metallurgical studies. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The total length and percentage of the
relevant intersections logged.
Sub-sampling techniques and sample preparation If core, whether cut or sawn and whether quarter, half or all core taken. If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. An approximate 25% split of the drilled sample interval is collected from the drill cyclone. The calico sample bags from site were air dried before sub-sampling. Any material that was bound together by clay was manually attritioned so it would pass through the splitter. The material was split using a 25 mm three tier riffle splitter to produce a sub-sample for assay submission of approximately 2.0 kg in a small calico sample bag. For one sample in every 20, an additional sample was collected from an alternate discharge chute on the cyclone mounted splitter for QAQC purposes. Results of field duplicates confirm the sampling process is generating representative results. The sample preparation technique, sample size and riffle aperture used is considered appropriate for mineral sands analysis.
For all sample types, the nature, quality and appropriateness of the sample preparation technique. Quality control procedures adopted for all sub-sampling stages to
maximise representivity of samples. Measures taken to ensure that the sampling is representative of the in-situ material collected, including for instance results for
field duplicate/second-half sampling. Whether sample sizes are appropriate to the grain size of the material being sampled.
Quality of assay data and laboratory tests The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established. Samples were analysed by conventional mineral sands techniques of screening, desliming and heavy liquid separation using SPT (sodium polytungstate: SG = 2.85g/cm3). XRF
analysis of HM magnetic fractions was used to define the VHM content. All 3,015 drill samples were submitted to the Base Titanium laboratory at the Kwale Operations in
Kenya. The separation of HM was by sodium polytungstate (SPT) at density 2.85 g/cc. All samples were: (i) Dried, weighed. (ii) Sample rotary split to produce ~400 g
sample. Sample wet screened using 45 µm and 1 mm sieves, to generate oversize and sand fractions, with slimes lost during screening and calculated by difference. (iii)
For samples UD2121 to UD3015 the oversize fraction was crushed until minimal oversize was present, with heavy liquid separation being undertaken on the combined mass of
as received sand fraction and lab generated sand fraction. (iv) SPT heavy liquid separation of sand fraction to generate a HM fraction. (v) HM fraction subject to
magnetic separation on a roll magnet to generate a high susceptibility (HS) fraction, magnetic (Mag) fraction and non-magnetic (NonMag) fraction. (vi) XRF analysis of Mag
fractions, with rutile (assumed 95% TiO2) calculated from TiO2 assay of NonMag by dividing by 0.95. (vii) NonMag fraction subject to Nitric acid dissolution to determine
pyrite content, with rutile grade adjusted to reflect XRF normalisation. Select float fraction samples were despatched to BV Centurion SA for analysis of TGC, with assay
grades adjusted to reflect losses to slimes and oversize. Various quality control samples were submitted routinely to assure assay quality. A total of 150 duplicate
field samples, 301 lab duplicate sample preparation samples, and an unspecified number of internal laboratory standards, repeats and blanks have been assayed at Kwale
Operations’ site laboratory.
Verification of sampling and assaying The verification of significant intersections by either independent or alternative company personnel. The use of twinned holes. Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Discuss any adjustment to assay data. Drilling, logging and sampling undertaken by contract geologists following on-site training by Base Titanium’s Exploration Manager. Twinned holes have been completed but
assay results are not yet available for comparison. Drill hole logging and site sample data is collected electronically and regularly emailed to the exploration office
in Kwale, Kenya. Assay data is captured electronically via LIMS and merged with logging and sample data in Datashed. No adjustment to assay data has been made – but it
is noted that rutile grades from holes TN001 to TN091 reflect rutile in the sand fraction only, while for holes TN092 to TN122 the rutile grades reflect the combined sand
and (crushed) oversize fraction.
Location of data points Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. Specification of the grid system used. Quality and adequacy of topographic control. Drill hole collars were surveyed using handheld GPS. All drill holes are vertical, down hole surveys were deemed unnecessary. Grid system used throughout the program is
UTM, Zone 37S, ARC60 datum. Topographic data was derived from a DTM generated from SRTM 30m spaced point data and all drill collars were levelled to the SRTM topographic
surface for consistency. The topographic control is considered adequate for reporting of exploration results but will require improved definition for any future resource
estimation.
Data spacing and distribution Data spacing for reporting of Exploration Results. Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. Whether sample compositing has been applied. The drilling program that forms the basis of this release is based upon 200m hole spacing along E-W oriented lines with 400m between lines. The drill program was designed
to test a prominent N-S trending ridge of quartzite and gneiss that reported anomalous rock chip and soil geochemistry. The current data spacing, and distribution is
likely not sufficient to establish geological and grade continuity and additional work programs are being implemented to better understand the geological controls on
mineralisation. No sample compositing has been applied.
Orientation of data in relation to geological structure Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. All drill holes were drilled vertically. The mineralisation drilled comprises a sub-horizontal soil and weathered saprolite profile, and primary bedrock. The geological
structure of the bedrock comprises 40° to 50° E dipping metamorphic fabric, and it is likely this is also evident in the saprolite as deep / intense weathering is not
evident. Drill lines were drilled north - south, east - west within 10 degrees of the topographic ridgeline that reflects the strike of the metamorphic fabric. A bias
to sampling has likely been introduced via vertical drilling of a moderately dipping geological unit, but as the geological controls on mineralisation are not fully
understood at this time – the potential bias is still under assessment. Reported mineralisation widths in the bedrock and likely saprolite will be significantly greater
(up to 1.5x) than true width.
Sample security The measures taken to ensure sample security. All samples from the drilling rig were transported to the Umba South exploration camp daily, where they are stored in a shed with a secure compound. Once sample
preparation is completed, the sub-samples for assay are placed in drums for transport to both Tanga (for government assessment) and ultimately the Kwale Operations in
Kenya. The samples bags were labelled by both marker and paper tags with a unique sample number.
Audits or reviews The results of any audits or reviews of sampling techniques and data. No external audits of the sampling techniques and data have been carried out, but the techniques and data have been reviewed by experienced Base Titanium and Base
Resources personnel. The sample analytical procedure has undergone several internal reviews with modifications occurring as required. The results of mineralogical
analysis are awaited to further review the analytical procedure.
Section 2 Reporting of Exploration Results
Criteria Explanation Comment
Mineral tenement and land tenure status Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. The Umba South project is located within Prospecting Licences PL 11686/2021, PL 11687/2021, and PL 19524/2022, which are held by BET Two Ltd, Base Resources’ wholly
owned, Tanzanian subsidiary. Several Primary Mining Licences (PMLs) for gemstones, up to 10ha in size, occur at Umba South and BET Two has entered into access agreements
with the PML holders allowing exploration drilling activity to be carried out in areas of interest. At the time of reporting, the BET Two tenure is in compliance with
all requirements and there are no known impediments to obtaining a licence to operate in the area.
Exploration done by other parties Acknowledgment and appraisal of exploration by other parties. No previous exploration for rutile is believed to have been undertaken in the Umba South area, with historical prospecting limited to reconnaissance sampling for
gemstones.
Geology Deposit type, geological setting and style of mineralisation. The project area is underlain by part of the Mozambique Belt – a major N-S trending geological structure extending along the Eastern Coast of Africa. High-grade
metamorphic rocks in the project area occur as prominent N-S trending ridgelines, with rutile being a common accessory mineral together with reported occurrences of
graphite, pyrite, sillimanite, kyanite, garnet and gemstones (primarily tourmaline). The primary focus of exploration is eluvial / alluvial HM (rutile) deposits sourced
from the mineralised ridges, and / or saprolitic deposits enriched in rutile that are sufficiently weathered to represent free-dig material from which rutile is readily
liberated. The eluvial profile developed at Umba South is typically quite thin (~1-2m) but can locally be up to 9m thick. Rutile mineralisation is widespread throughout
this unit proximal to the ridgeline at Umba South and is present as HM grains within gravelly clayey sand and soil. The saprolite present at Umba South has variable
depth and the weathering profile is not well developed. Rutile mineralisation occurs sporadically throughout this unit and appears related to specific lithological zones
that are enriched in rutile. The nature of the saprolite rutile mineralisation has not been established at this time.
Drill hole Information A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: * easting and northing of the drill hole collar BET Two has conducted two drilling programs to date, with this release relating to the Phase 1 reconnaissance drilling for which assay results are complete. A total of
* elevation or RL (Reduced Level – elevation above sea level in metres) of the drill hole collar 122 holes for 3,015m with an average depth of 25m were completed for Phase 1. All holes were drilled vertically. See drill hole location plan - Figure 2. Drill hole
* dip and azimuth of the hole collars and significant assays are presented in Table 1 in Appendix 1.
* down hole length and interception depth
* hole length.
If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case.
Data aggregation methods In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (e.g. cutting of high grades) and cut-off grades are usually Material and should be stated. Where aggregate intercepts incorporate short lengths of high grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. The assumptions used for any reporting of metal equivalent values should be clearly stated. Exploration results are reported as length-weighted average grades of rutile mineralisation using a nominal 0.7% rutile cut-off grade. No top-cutting has been applied.
Grades reflect in-situ rutile content based upon analysis of the sand fraction. Aggregate downhole significant intercepts were calculated using the following parameters:
* Minimum 3m interval of mineralisation.
* Maximum 2m interval of internal “low grade” allowed provided the aggregate grade exceeds 0.7%, with multiple “low-grade” intervals permitted.
For clarity the aggregate downhole intercept is also tabulated by geological domain.
Relationship between mineralisation widths and intercept lengths These relationships are particularly important in the reporting of Exploration Results. If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (e.g. ‘down hole length, true width not known’). The mineralised eluvial soil horizon forms a relatively flat lying blanket and is intersected by vertical holes; hence the intercept length is approximately equivalent to
the mineralization thickness. The mineralised saprolite material likely has rutile mineralisation reflecting the primary metamorphic fabric, as the weathering profile is
relatively shallow and weak with minimal mass reduction and chemical mobilisation. The metamorphic fabric dips 40° – 50° to the east and this would result in down hole
mineralisation lengths being up to 1.5 times true width. The mineralised bedrock has rutile mineralisation aligned with the primary metamorphic fabric (as above) and
this would result in down hole mineralisation lengths being up to 1.5 times true width.
Diagrams Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported These should include, but not be limited to a plan view of drill hole collar locations and appropriate sectional views. Plan of Drill hole locations see Figure 2 and representative drill hole cross sections see Figures 4 to 6. Tabulation of drill intercepts see Table 1 of Appendix 1. Due
to the limited understanding of geological controls on mineralisation only simplified representative cross-sections are reported at this time.
Balanced reporting Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. All drill hole collar locations are tabulated, including those with no significant assays.
Other substantive exploration data Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. Metallurgical testwork on samples collected from shallow test pits within the soil /eluvial domain highlighted the presence of altered ilmenite (averaging ~65% TiO (2))
within the heavy mineral assemblage. Significant TiO (2)can be present within the Mags fraction of the HM from rutile mineralised zones, but in the absence of
mineralogical data and a more refined analytical technique it has not been possible to quantify this TiO (2)as an ilmenite that has economic potential. The geotechnical
characteristics of the saprolite material being drilled is not able to be reliably determined given the RC hammer drilling method. This is potentially significant as the
economic potential of the rutile mineralisation within the saprolite will be partially determined by the mining method (cost) and the processing required to generate
rutile product (e.g. liberation of rutile grains, efficient recovery processes). There is a risk that the saprolite may require drill and blast hardrock mining methods
(at high cost) and that rutile mineralisation may require comminution (at high cost) to achieve liberation and amenability to conventional mineral sands processing
methods. If this were the case a substantially higher economic cut-off grade would need to be applied. Similarly, the bedrock mineralisation will necessitate hard rock
mining methods and comminution to achieve rutile liberation – and there is no certainty that metallurgical testwork will deliver economic outcomes. The bedrock
mineralisation also contains a significant amount of pyrite - a known deleterious element for mineral sands processing, together with its unfavourable environmental
impact necessitating dedicated tailings handling and storage.
Further work The nature and scale of planned further work (e.g. tests for lateral extensions or depth extensions or large-scale step-out drilling). Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive. Once necessary approvals have been obtained for the Game Controlled Area north of the Umba River, future work will consist of reconnaissance exploration to establish if
broad areas of rutile mineralisation are present within either colluvial/alluvial material shedding from the prospective ridge line, or strongly weathered saprolite
associated with the targeted prospective zone. Samples from Umba South have been sent for detailed mineralogical analysis to assist with geological interpretation,
validation of analytical flowsheet, metallurgical assessment, and economic potential. A program of trenching or core-drilling at Umba South would provide samples of the
saprolite that will allow geotechnical assessment and detailed mapping / logging of the geology and mineralisation.
Glossary
Base Titanium Base Resources’ wholly-owned Kenyan subsidiary, Base Titanium Limited.
BDR Bedrock geological domain.
BET Two Base Resources’ wholly-owned Tanzanian subsidiary, BET Two Limited.
Collar Location of a drill hole.
CS Colluvium and Soil geological domain.
DTM Digital terrain model.
Easting A figure representing eastward distance on a map.
GPS Global positioning system.
HHGPS Handheld global positioning system.
HM Heavy mineral.
JORC Code The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves, as published by the Joint Ore Reserves Committee of The Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists and Minerals Council of Australia.
Mag Magnetic fraction of HM.
Non-mag Non magnetic fraction of HM.
Northing A figure representing northward distance on a map.
NSR No significant result.
RC Reverse circulation.
SAP Saprolite (weathered bedrock) geological domain.
SPT Sodium polytungstate solution used for heavy liquid separation.
SRTM Shuttle radar topography mission flown by space shuttle Endeavour to acquire radar data used to create global land elevation dataset.
TGC Total graphitic carbon.
TiO (2) Titanium dioxide.
UD Umba drilling sample prefix.
UTM Universal Transverse Mercator is a plane coordinate grid system.
VHM Valuable heavy mineral.
XRF A spectroscopic method used to determine the chemical composition of a material through analysis of secondary X-ray emissions, generated by excitation of a sample with primary X-rays that are characteristic of a particular element.
ENDS.
For further information contact:
Australian Media Relations UK Media Relations
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Cameron Gilenko and Michael Weir Jos Simson and Gareth Tredway
Tel: +61 8 6160 4900 Tel: +44 207 920 3150
About Base Resources
Base Resources is an Australian based, African focused, mineral sands producer
and developer with a track record of project delivery and operational
performance. The Company operates the established Kwale Operations in Kenya,
is developing the Toliara Project in Madagascar and is conducting exploration
in Tanzania. Base Resources is an ASX and AIM listed company. Further
details about Base Resources are available at www.baseresources.com.au.
PRINCIPAL & REGISTERED OFFICE
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Email: info@baseresources.com.au
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Phone: +61 8 9480 2500
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Phone: +44 20 7523 8000
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