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Quaterra Delineates High-Grade, Acid-Soluble Copper Zone at MacArthur
Jul. 19, 2011 (Newsfile Corp.) -- Quaterra Resources Inc. today announced that angle drillin...
About this update from Lion Copper And Gold Corp
[{"type":"text","content":"\nQuaterra Delineates High-Grade, Acid-Soluble Copper Zone at MacArthur\n\n Jul. 19, 2011 (Newsfile Corp.) -- Quaterra Resources Inc. today announced that angle drilling on a spacing of about 500 feet is defining a large zone of high-grade copper mineralization north of the pit at its 100%-owned MacArthur copper project in the Yerington district of western Nevada. Hole QM-187, drilled 2,000 feet north of the MacArthur pit, intersected 90 feet of predominantly chalcocite mineralization averaging 1.66% total copper (TCu) starting at a depth of 310 feet. This intercept includes 40 feet assaying 3.49% TCu, which is the highest-grade intercept drilled to date on the property. Vertical holes were previously drilled on a 500-foot grid to define the overall extent of the horizontal blanket of secondary copper. Angle holes are now being collared in areas with higher grade potential to test high-angle northeast and northwest trending mineralized structures that form an important component of the acid-soluble copper deposit. “High-grade, acid-soluble copper mineralization appears more abundant than we recognized in the past,” says Quaterra President and CEO Tom Patton. “We believe this Ridge Zone could form part of a higher grade starter pit with robust economics.” As Quaterra’s infill drilling program has progressed from west to east across the deposit, several holes began encountering exceptionally high grades of continuous chalcocite and copper oxide mineralization in zones averaging 40 feet or more in thickness. Earlier holes intersected high-grade mineralization in the area now referred to as the “Ridge Zone”, but its extent and continuity had been uncertain because several marginally mineralized holes in the initial 500-foot spaced drilling program encountered a system of barren hornblende dikes that cross-cut the area. The recent infill program began in April and complete results are available for 7,875 feet of drilling in 14 angle holes. Seven of the holes have intercepted significant thicknesses of greater than 0.5% TCu as shown in the table below: From To Thickness Total Cu Drill Hole feet feet feet % QM-178 150.0 225.0 75.0 0.38 including 150.0 185.0 35.0 0.58 QM-180 190.0 220.0 30.0 0.89 including 190.0 210.0 20.0 1.17 QM-183 360.0 400.0 40.0 1.37 QM-187 310.0 400.0 90.0 1.66 inc...