Quaterra Expands Copper Zone at MacArthur

VANCOUVER, BC - Quaterra Resources Inc. reported that drilling at its 100%-owned MacArthur project near Yerington, Nevada, has expanded and partially delineated a broad zone of acid-soluble copper mineralization beneath, south and to the north and northwest of the historic MacArthur copper oxide deposit.
Seventy holes totaling 23,739 feet were drilled between September and December 2007 in 28 core holes and 42 RC holes. Principal conclusions are as follows:
1. The mixed oxide/chalcocite mineralization north of the MacArthur pit has been extended an additional 1,500 feet to the west and now has been traced for nearly 5,000 feet to the west and southwest from hole QMCC-7 to hole QMCC-16.
¥  The zone is currently up to 1,500 feet wide and averages over 100 feet thick, based on holes drilled on 500 foot centers. A few historic Anaconda drill-holes suggest that this zone may connect to the south with mineralization in and adjacent to the MacArthur pit but more drilling will be required for this to be confirmed. Three vertical holes are of particular note: QMC-27R, with 115 feet of 0.30% total copper (TCu) beginning at a depth of 195 feet; QMC-23R, with 25 feet of 1.25% TCu beginning at 340 feet; and QMC-4bR, with 95 feet of 0.57% TCu beginning at 305 feet. (See drill-hole table attached to this release).These holes are at the northernmost limit of drilling and mineralization remains open to expansion to the north and northwest. Hole QMC-1bR contains the highest grade interval drilled to date with 180 feet of 0.91% copper beginning at 270 feet but may have been drilled parallel to a high grade structure. Additional drilling will be necessary to determine the geometry and significance of this intercept.
2. Quaterra's drill results (QME and QMT holes reported in this release) continue to expand the MacArthur pit mineralization delineated by Anaconda in a 1971-1972 shallow drilling campaign that tested to an average depth of 200 feet below surface.
¥  Of particular interest is a new zone (not included in the historic resource) of predominately chalcocite mineralization located 20 feet to approximately 70 feet below the existing MacArthur oxide copper deposit that remains open to extension both to the north and west where it may connect with the north zone mineralization detailed above. Hole QMT-10 on the northeast edge of the pit contains 205 feet of 0.42% TCu beginning at 129 feet, including a 78 foot intercept averaging 0.78% TCu from 136 to 214 feet. Holes QME-79R and QME-80R, drilled 1,200 and 1,700 feet respectively east of the pit along the edge of the waste dump, each intersected 40 to 60 feet of + 0.30% TCu. These holes and abundant copper oxides exposed in pits and trenches 3,000 feet southwest of the pit provide good opportunities to delineate additional mineralization.
3. A porphyry copper target has been identified in the Gallagher area about one mile west of the MacArthur pit below a large area of iron oxides and phyllic alteration.
The company's address is Suite 1100 - 1199 West Hastings Street, Vancouver, BC V6E 3T5, (604) 681-9059, fax: (604) 688-4670.