LMS Prospect, Goodpaster Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
LMS Prospect	Prospect
Goodpaster Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: The LMS prospect is on a large block of 92 State of Alaska claims that cover about 25 square miles. The drilling on the prospect has been spread for about 2 miles along a north-northeast trending ridge that is south of the head of Progressive Creek in sections 22 and 27, T. 8 S., R. 11 E. The center of the drilling is near VABM Liscum. The location is accurate.
Geology: The LMS prospect was discovered by AngloGold Ashanti (USA) Exploration Company by following up stream sediment sampling with soil geochemistry. In 2005, they drilled 3200 meters of hole at 17 locations with encouraging results. International Tower Hill Mines Ltd. is now exploring the property in a joint venture with AngloGold (International Tower Hill, 2008a) In 2006, ITH drilled another 6,329 meters in 20 holes. and in 2008,. ITH published a comprehensive NI 43-101 report on the property (International Tower Hills, Ltd., 2008, Report). The gold mineralization is in a large accretionary complex of igneous and sedimentary rocks that have been metamorphosed to greenschist and amplibolite-facies grade. There is little outcrop in the area and what rocks are exposed on the high ridges consist of middle to early Paleozoic and(or) Late? Proterozoic quartz and pelitic schist of the Yukon-Tanana Upland and Mississippian and(or) Devonian? augen gneiss (Wilson and others, 1998). The gold mineralization usually is in strongly silicified and brecciated zones that are associated with low-angle faults marginal to schist units (International Tower Hill Mines, Inc., 2008, Cross Section). The ore contains abundant pyrite and minor galena, arsenopyrite, and graphite. The mineralization is associated with a silicified zone about 30 meters thick that dips west. The low-angle mineralized zones are cut by a series of high-angle, possibly mesothermal veins along an east-west trend of foot- and hanging-wall stockworks. Some of the notable intercepts in the 2005 drill holes are: 1) 30.48 meters that contain 1.10 part per million (ppm) gold, 2) 3.04 meters that contain 1.51 ppm gold, 3) 4.57 meters that contain 1.12 ppm gold, 4) 25.91 meters that contain 1.18 ppm gold, 5) 15.39 meters that contain 3.43 ppm gold, 6) 3.38 meters that contain 21.52 ppm gold, 7) 4.58 meters that contain 4.00 ppm gold, 8) 1.53 meters that contain 1.81 ppm gold, 9) 0.8 meters that contain 1.95 ppm gold, and 10) 4.17 meters that contain 1.95 ppm gold. In early 2008, International Tower Hill Mines (2008, Report) announced that at a cut-off grade of 0.3 gram of gold per tone, the deposit contained 5.86 million tones of material with average grade of 0.89 grams of gold per tone, or 167,000 ounces of gold. There is considerable potential to extend these resources into the surrounding area.
Workings: The LMS prospect was discovered by AngloGold Ashanti (USA) Exploration Company by following up stream sediment sampling with soil geochemistry. In 2005, they diamond drilled a total of 3200 meters of hole at 17 locations with encouraging results. International Tower Hill Mines Ltd. is now exploring the property in a joint venture with AngloGold (International Tower Hill, 2008, LMS).
Age: Paleozoic or younger based on the age of the host rocks.
Alteration: Associated with a silicified zone about 30 meters thick that dips west in metamorphic rocks.
Reserves: In early 2008, International Tower Hill Mines (2008, Report) announced that at a cut-off grade of 0.3 gram of gold per tone, the deposit contained 5.86 million tones of material with average grade of 0.89 grams of gold per tone, or 167,000 ounces of gold. There is considerable potential to extend these resources into the surrounding area.

Commodities (Major) - Au; (Minor) - As, Pb
Development Status: None
Deposit Model: Gold-quartz mineralization in a thick silicified zone.

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Link to USGS - Alaska:	BD056

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References