** U.S.-listed shares of rare earth miners rise premarket after Bloomberg News reports that U.S. President Donald Trump is set to launch a strategic critical-minerals stockpile with $12 billion in seed money
** Critical Metals CRML.O climbs 6.9%; United States Antimony UAMY.N gains 4.6%
** USA Rare Earth USAR.O up 6.5%; MP Materials MP.N added 3.5%
** NioCorp NB.O up 6.9%; Energy Fuels UUUU.A up 2.5%
** Trilogy Metals TMQ.N climbs 3.7%; Ramaco Resources METC.O gains 2.7%
** The venture, dubbed Project Vault, will combine $1.67 bln in private capital with a $10 billion loan from the US Export-Import Bank to procure and store minerals for manufacturers and tech cos, the report says
** The stockpile aims to shield U.S. supply chains from price volatility and reduce reliance on China
** Last month, a bipartisan group of U.S. lawmakers introduced a bill to create a $2.5 billion stockpile of critical minerals, a move aimed at stabilizing market prices and encouraging domestic mining and refining
(Reporting by Tharuniyaa Lakshmi in Bengaluru)
((tharuniyaa@thomsonreuters.com))