REG - Geo Exploration Ltd - Juno Project – Results of Electrical Geophysics

GEO ExplorationAnnouncement

24/07/2025 07:00

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RNS Number : 2976S  Geo Exploration Limited  24 July 2025

 24 July 2025

 GEO Exploration Limited

 ("GEO " or the "Company")
 Juno Project - Results of Electrical Geophysics

 Key Highlights:

 - Electrical Geophysical programmes completed at Juno Project comprising
 Induced Polarisation (IP) and Electromagnetics (EM)

 - IP and EM responses successfully modelled from subsurface data

 - Geophysical responses observed have upgraded the Juno Project from an IRGS
 perspective

 - IP and EM results integrated with existing subsurface models, and proposed
 maiden drillhole locations confirmed

 - Maiden drilling programme scheduled to commence during the current quarter

 - Maiden holes will be drilled to depths of between 750m and 1000m and are
 planned to be vertical

 GEO Exploration Limited (LSE AIM: GEO) is pleased to announce that its wholly
 owned subsidiary Juno Gold Pty Ltd ("Juno Gold") has completed ground based
 Electrical Geophysical programmes at the Juno Project. The Juno Project is
 located in central Western Australia where the company is conducting
 exploration for large Intrusion Related Gold Systems ("IRGS") which host
 precious and base metal mineralisation.

 The Electrical Geophysical programmes comprised Induced Polarisation ("IP")
 and Electromagnetics ("EM") and was carried out over the northern parts of the
 project area.

 Dipole-Dipole IP was carried out to detect subsurface electrically chargeable
 and electrically resistive bodies at depth. IRGS type mineralisation can
 demonstrate a chargeable or resistive response relative to host rock and IP
 can be used as a direct detection method enabling more robust drill targeting.
 The survey was acquired using a dipole-dipole array with 200m receiver and
 400m transmitter dipole with 200m station locations. Four lines of data were
 collected for a total of 15 line kilometres.

 Data was recorded with two 16 channel SmartTEM receivers and a 50KVa Search
 Exploration high power transmitter. All field data was subject to an intensive
 QA/QC review prior to modelling. It was found that ground conditions were
 challenging for chargeability due to near surface conductivity although
 reasonable repeatability at depth was achieved.

 Resistivity data obtained showed excellent repeatability. Following QA/QC the
 IP data was processed using inverse and forward modelling techniques.

 Results of modelling of IP data were highly encouraging. Resistivity models
 revealed geological features associated with the eastern and western margins
 of the 3D magnetic and gravity models over several kilometres of strike.
 Chargeability models displayed several attractive responses, again, located
 adjacent to the margins of the 3D modelled magnetic and gravity models over
 several kilometres of strike (Figures 1 and 2).

Figure 1 - Dipole-Dipole IP 2D Section Lines. Resistivity (left) showing
 geological contacts and Conductivity (right) showing chargeability responses.
 Associated with eastern and western margins of magnetic and gravity bodies.

Figure 2 - Dipole-Dipole IP 2D Section Lines on modelled 3D magnetic and
 gravity bodies. Resistivity (left) and Chargeability (right). 3D model bodies
 from RNS dated 28 May 2025.

 The Company also completed a programme of fixed loop EM at the Juno Project.
 The EM method allows detection of electrically conductive bodies at depth and
 provides for spatial modelling of the location of those bodies. The fixed loop
 EM method, rather than moving loop, was used to increase crew productivity. In
 total three fixed loops were collected for 14.4 line kilometres of data, using
 800m x 800m transmitter loops with 200m spaced receiver lines and 200m
 receiver station spacings. Data was collected using a DTRX high power
 transmitter and SmartTEM receiver with a 3 component EMIT B-Field antenna.
 Data was subject to QA/QC review and found response from early-time channels
 was subject to surface conductivity, as per the IP data, but good
 repeatability was achieved for the late-time EM channels of interest. EM data
 was processed using forward modelling techniques.

 Results of EM data forward modelling were positive, outlining two conductive
 bodies spatially associated with the 3D modelled magnetic and gravity bodies
 (Figure 3).  These conductive bodies or 'Plates' lie spatially adjacent to,
 or along strike with, the IP chargeability response (Figure 4).

Figure 3 - Fixed Loop EM Conductors with modelled 3D magnetic and gravity
 bodies. 3D model bodies from RNS dated 28 May 2025.

Figure 4 - Fixed Loop EM Conductors, IP resistivity (left) / conductivity
 (right) sections, with modelled 3D magnetic and gravity bodies. 3D model
 bodies from RNS dated 28 May 2025.

 The geophysical responses observed are consistent with an intrusive body
 causing the magnetic and gravity responses. This has upgraded the project from
 an IRGS perspective. The IP and EM responses occur on the contact margins of
 the interpreted intrusive which is consistent with an IRGS system whereby
 sulphide mineralisation may develop on the margins of the intrusive due to
 redox reactions with metasediments and structural controls that may focus
 metal bearing fluids.

 Four diamond drillholes (Figure 5) have been designed to test the best parts
 of the Juno target based on spatially accurate geophysical models derived from
 integrated gravity, magnetics, IP and EM data. These drillholes will test the
 more favourable parts of the magnetic and gravity bodies that have been
 modelled with a high degree of confidence, and the contact margins of the
 interpreted intrusive that shows positive IP and EM responses.

 These maiden holes for the Company at the Juno Project will be drilled to
 depths of between 750m and 1000m and are planned to be vertical. Commencement
 of drilling is scheduled for the current quarter.

Figure 5 - Modelled 3D magnetic and gravity bodies with Fixed Loop EM
 conductors and proposed diamond drillhole locations. 3D model bodies from RNS
 dated 28 May 2025.

 Callum Baxter, GEO's joint venture partner commented:

 "Results of the electrical geophysical work are pleasing and have enhanced the
 Juno Project from an IRGS perspective. We have a high degree of confidence in
 our spatial modelling and have selected several drillholes for our maiden
 drill programme at the very large Juno target. I look forward to commencement
 of drilling during the current quarter."

 Omar Ahmad, CEO of Geo Exploration Limited, commented:

 "We are delighted that the eagerly anticipated maiden drill campaign at the
 Juno Project is set to commence this quarter. Our JV partner, Mr Callum
 Baxter, and his world-class team have done an outstanding job expediting the
 geophysical work over the last 10 months, maintaining the highest standards
 throughout. This effort has outlined a compelling target several times larger
 than Havieron was at a comparable stage, underscoring the immense potential of
 Juno. We are excited, and committed to delivering significant value for our
 shareholders as we look forward to drilling Juno."

 COMPETENT PERSON - The information in this announcement relating to the
 project is deemed to be a true representation of the exploration results. Mr
 Steven Andrew Milner has sufficient experience, to qualify as a Competent
 Person as defined in the 2012 Edition of the Joint Ore Reserves Committee
 (JORC) "Australasian Code for Reporting of Exploration Results, Mineral
 Resources and Ore Reserves". Steven is a member of the Australasian Institute
 of Mining and Metallurgy (M.Aus.lMM #109255), is employed as a consultant with
 Austwide Mining Title Management Pty Ltd and is a graduate of Durham
 University and has over 40 years of experience in exploration and mining in
 Australia, Zimbabwe and Namibia. Steven is a Director of Mineral Search Pty
 Ltd.

 The information contained within this announcement is deemed by the Company to
 constitute inside information under the UK Market Abuse Regulations ("MAR").
 Upon the publication of this announcement via a Regulatory Information Service
 ("RIS"), this inside information is now considered to be in the public domain.

 For further information please visit: www.geoexplorationlimited.com
 (http://www.geoexplorationlimited.com) or contact:

 GEO Exploration Limited                                                     investors@geoexpltd.com

 Hamza Choudhry, CFO and Executive Director

 SPARK Advisory Partners Limited (Nominated Adviser)                         +44 (0) 20 3368 3555

 Andrew Emmott, Jade Bayat

 CMC Markets (Joint Broker)                                                  +44 (0) 20 3003 8632

 Douglas Crippen

 SI Capital Limited (Joint Broker)                                           +44 (0) 14 8341 3500

 Nick Emerson

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 Company.

 

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