LIBERTY STAR RECEIVES ZTEM REPORT – SHOWS “AT LEAST 6 TO 7 PORPHYRY COPPER SIGNATURES” IN BIG CHUNK SOUTH BLOCK, AK
Tucson, Arizona – May 18, 2010 - Liberty Star Uranium & Metals Corp. (The “Company,” LBSR: OTCBB) is pleased to announce that it has received the completed 2D ZTEM Report for the Big Chunk South Block from our geophysical contractor Geotech Ltd. This professional report states that their interpretation “shows at least 6 to 7…..signatures..…that are consistent with porphyry copper responses….Comparison against ZTEM 2D resistivity inversion results have defined resistivity features that resemble typical potassic-altered core and pyritic-propylitic halos over known porphyry systems, extending to great depth (>1 km or 3,000 feet).” These anomalies are in the size range of the footprint of the nearby Pebble deposit(s), also within the Big Chunk caldera, and go to significant depth. Stated in the report “Porphyry coppers… tend to be associated with pronounced resistivity highs associated with a potassium rich altered core, surrounded by resistivity lows associated with pyrite propylitic alteration halos (i.e. Mt Milligan, San Juan-Lone Star, Morrison etc.).” This is the Porphyry Copper Model, which Company Director Dr. John Guilbert co-developed and is described and illustrated in his book, Geology of Ore Deposits.
Comments James A. Briscoe (P. Geo), the Company’s CEO, “This is the culmination of our seven year long painstaking exploration process starting in 2003 with recognition of potential for numbers of porphyry copper occurrences along the moat zone of the Big Chunk caldera, hidden under post mineral material including cover left by glacial action. All of our collected millions of pieces of exploration data fit together like a complicated but now essentially completed puzzle. Our geochemistry tells us we are in the proper metal zone(s) and the ZTEM tells us porphyry systems are present and gives us specific targets to drill.”
The Company continues aggressively to seek joint venture partner(s) to drill these geophysically defined porphyry anomalies.
The Pebble deposit is among the largest copper-gold porphyry systems, and one of the greatest stores of mineral wealth, ever discovered. The U.S. Geological Survey lists the Pebble resource lands as the most extensive mineralized system in the world.Since acquiring Pebble in 2001, Northern Dynasty and the Pebble Partnership have expanded known mineral resources by more than 1000%. With ~800,000 feet of drilling in ~1,000 holes, a significant proportion of known mineralization at Pebble is in measured or indicated categories.
In total, the current Pebble deposit resource estimate includes 5.94 billion tonnes in the measured and indicated category containing 55 billion lb copper, 66.9 million oz gold and 3.3 billion lb molybdenum; and 4.84 billion tonnes in the inferred category, containing 25.6 billion lb copper, 40.4 million oz gold and 2.3 billion lb molybdenum. Quantities of silver, palladium and rhenium also occur in the deposit. It is a known mineral resource with the volumes, grades, metallurgy, geometry and potential to support a modern, long-life mine.
This years drilling at Pebble not reported, yet
The January 2010 Pebble mineral resource estimate is based on results from 509 core holes. At a 0.30% copper equivalent (CuEQ) cut-off, total known mineral resources are: •5.94 billion tonnes of Measured and Indicated Mineral Resources grading 0.78% CuEQ, containing 55 billion pounds of copper, 67 million ounces of gold, and 3.3 billion pounds of molybdenum; plus •4.84 billion tonnes of Inferred Mineral Resources grading 0.53% CuEQ, containing 25.6 billion pounds of copper, 40.4 million ounces of gold, and 2.3 billion pounds of molybdenum
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Northern Dynasty purchased a claim block from Liberty Star, 5 cores have been sent to the lab
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