Texas Mineral Resources Corp (TMRC)

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Must be hard rock, column leach results?

AB RESULTS SUGGEST POTENTIAL EXTRA REVENUE STREAMS FROM ROUND TOP PROJECT
SIERRA BLANCA, Texas November 20, 2013 (MARKETWIRE) -- Texas Rare Earth Resources Corp. (TRER), a heavy rare earths exploration company, is pleased to announce results from column leach tests conducted by Resource Development Inc. (RDI) of Wheat Ridge, Colorado, an independent laboratory testing company which provides technical and consulting services to the international mining industry.

In addition to the rare earth element recoveries from the column leach results reported in TRER's Sept. 30 press release, Round Top Rhyolite crushed to 1/2 inch rhyolite leached at room temperature in 75 g/l sulfuric acid strength columns for 60 days yielded potentially economically significant amounts of lithium (Li) and beryllium (Be) metal. Test results are summarized below:

Li Be
Ore Grade, ppm 400 19
Extraction, % 58.5% 9.7%

At these recoveries, and assuming a 20,000 tpd (tonnes per day) operation as envisioned in the upcoming revised Preliminary Economic Assessment (PEA), recoveries of as much as 9,000 tons of lithium carbonate per year and approximately 36 tons of beryllium oxide per year are suggested. TRER’s upcoming revised PEA will be based only on the rare earth elements but the presence of these other elements in the leach solution holds the possibility of significant by-product revenue. It is important to note that the upcoming revised PEA will not incorporate either LI or Be economics as neither mineral was included in the NI 43-101 resource estimate published in June 2012 and actual recoveries of Li and Be in any future mining operations may differ from those indicated by the independently run column leach results.

http://tmrcorp.com/news/press_releases/index.php?content_id=239