Bureau of Mines / Minerals yearbook: Area reports: domestic 1978-79
Year 1978-79, Volume 2 (1978-1979)
Pittman, Tom L.
Alaska, pp. 43-51 ff. PDF (952.3 KB)
48 MINERALS YEARBOOK, 1978-79 environmental baseline data gathering programs. Access road construction has not been permitted, so all transport to and from the Quartz Hill project to tidewater has been by helicopter. The project is within the Misty Fiords National Monument, created on December 5, 1978. AMAX Exploration, Inc., drilled a molybdenum occurence and some base-metal sulfide deposits in the Groundhog Basin area east of Wrangell. A molybdenum property on Mount Ogden, on the Alaska-Canada boundary, was discovered in 1978. It is about 45 miles east of Juneau. Geologic mapping and surface sampling were followed by diamond drilling and some underground work in 1979 on the Canadian side of the located area. Bema Industries Ltd. reported discovery and initial testing of the Y-zone molybdenum deposit in 1979 after tracing float up the Wright Glacier, which is in Alaska, west of the Boundary ridge. Nickel and Cobalt.—Inspiration Development Co. did geologic work and diamond drilling in 1978 and 1979 on its groups of unpatented nickel-cobalt-copper claims on Yakobi Island and at Mirror Harbor, on Flemming and Chichagof Islands. There was no reported activity at the Nunatak Group of patented claims near Brady Glacier, located in Glacier Bay National Monument. Silver.—Industry and DG&GS sources estimate about 6,500 troy ounces of silver was produced as an alloy with placer gold. An unknown quantity of silver was shipped in ore by the Berry Brothers from a silver lode mine in the Wrangell Mountains. The Greens Creek prospect on Admiralty Island may become the first major silver mine in Alaska. It was discovered in 1975 and explored by diamond drill holes from surface stations. After concluding surface drilling, the data released by Noranda Exploration, Inc., the operating partner, indicated about a million tons of reserves averaging 10.4% zinc, 3.29% lead, 0.4% copper, 0.13 troy ounce of gold per ton, and 9.40 troy ounces of silver per ton. The 1978-79 program included driving about 4,500 feet of 10- by 12-foot adit in the hanging wall parallel to the deposit, cutting drill stations every 150 feet opposite the deposit, and drilling a fan of holes at each station. This drilling totaled about 20,000 feet. The reserve tonnage and the average silver grade were both increased significantly by this exploration. The property is owned by the Pan Sound Joint Venture. The venturers are Noranda Exploration, Inc., Marietta Resources International, Texas Gas Exploration, Inc., Mitsubishi Corp., and Bristol Bay Native Corp. Tin.—Lost River Mining operated a tin placer washing plant on Cape Creek and produced cassiterite concentrates. Lee BroS. Dredging Co., Inc., produced some concentrates in the same general area on the Seward Peninsula. Severa' tons of tin concentrate was recovered as a coproduct at the Miller-Ne'ubauer gold placer near Tofty, about 100 miles west of Fairbanks. Tungsten.—Tungsten concentrates were trecovØ~red by the small mill at the Yellow Pup mine. The mine is on Gilmore Dome, about 15 miles northeast of Fairbanks. NONMETALS Asbestos.—Drilling and other exploration projects were conducted on the Eagle Asbestos prospect by Alaska Asbestos Co. This company is reported to be a partnership owned equally by Tanana Asbestos Corp~, Maclntyre Mines Ltd., and General Crude Oil Co. Tanana Asbestos Corp. is a wholly owned subsidiary of Doyon, Ltd., an Alaska Native Corp. The prospect is on Doyon, Ltd., land north of Tok. Drilling is said to have confirmed the occurrence of fiber-bearing ultrabasic rocks extending about 1,200 feet on strike and 1,000 feet down dip. ASARCO Incorporated and Canadian Superior Exploration Ltd., are active in the Eagle area on an asbestos program. Barite.—Production of crude ore was resumed in 1979 at the Castle Island deposit of Chromalloy American Corp., in Duncan Canal, east of Petersburg. The barite was shipped to an outside processor. The Lime Point deposit is again of interest. Adjoining land and offshore claims have been located and recorded. The property is on the east shore of Hetta Inlet, Prince of Wales Island, about 45 miles southeast of Ketchikan. The Anaconda Co. is exploring the basemetals-and-barite deposit of Alyu Mining Co. The deposit is north of Jarvis Creek, about 40 miles northwest of Haines. Barite is a prominent mineral in some of the stratiform and related zinc-lead deposits in the western part of the Brooks Range and has been found as the dominant mineral at several mineralized areas. Gem Stones.—Most of the reported gem stone production consists of jade and soapstone. The jade is usually collected in the
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