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As part of a cooperative project during 1986 and 1987, personnel from the U.S. Bureau of Mines and State of Alaska Division of Geological and Geophysical Surveys studied the mineral development potential of the Chilkat Peninsula and Islands, Alaska, as part of the larger Juneau Mining District study. About 4/5 of the area is within the Alaska State Chilkat and Chilkat Islands State Parks and not open to mineral entry. This study located four new (or previously unreported) gold- copper prospects. One of these, the Road Cut prospect, was examined by trenching, drilling and geophysics. While sufficient grades and tonnages were not delineated by this work to constitute an economic deposit, they are sufficient to encourage...
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To leach metals from porphyry copper samples in which chalcopyrite (CuFeS2)2) was the primary mineral, two thermophilic bacteria were used, Sulfolobus acidocaldarius and "ferrolobus. " Ferrolobus has not been classified, but is similar to Sulfolobus acidocaldarius. Both organisms are mixotrophic, thermophilic and acidophilic, and oxidize sulfur and iron. Leaching tests were conducted in 6 .ft x 0.5 ft glass leach columns heated to 60 C. The percents of copper, molybdenum, zinc, lead and iron extracted from mineral samples inoculated with mixed cultures of Sulfolobus acidocaldarius and ferrolobus were compared with the extraction of these metals from samples maintained under identical conditions but sterilized with...
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Barker, J.C., and Roberts, W.S., 1985, A copper-cobalt occurrence in the Cape Krusenstern area, northwestern Alaska: U.S. Bureau of Mines Open-File Report 33-85, 16 p.
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A previously unreported occurrence of molybdenum and copper mineralization in a small granitic stock exposed at the toe of Billings Glacier, located 5.5 miles northeast of Whittier, Alaska, was discovered and examined briefly by personnel from the U.S. Bureau of Mines (BOM) in July and August, 1981. Molybdenite occurs as disseminated grains and crystalline clusters, up to 1 1/2 inches across, apparently associated with hydrothermally altered portions and also along fractures in the granitic pluton. Molybdenite also occurs as disseminated grains in spheroidally weathering granitic xenoliths found in the pluton near its eastern contact. Minor pyrite and very minor amounts of chalcopyrite are disseminated throughout...
map background search result map search result map WMR 004 - Andover-Sulphur Hill Mine. Sussex County, New Jersey. 1942. WMR 006 - Ely Mine (Copperfield Mine). Orange County, Vermont. 1943. WMR 022 - Slauber Mine. Guadalupe County, New Mexico. 1942. WMR 061 - Ore Knob Mine. Ashe County, North Carolina. 1943. WMR 078 - Blackbird District. Lemhi County, Idaho. 1943. WMR 099 - Shamrock Copper. Jefferson County, Montana. 1943. WMR 236 - Green Mountain Copper Mine. Sanders County, Montana. 1944. WMR 265 - Copper Nugget Placer. Jefferson County, Montana. 1944. WMR 282 - Atwood Group, Lordsburg District. Hidalgo County, New Mexico. 1944. WMR 286 - Rambler Mine. Albany County, Wyoming. 1944. WMR 337 - Sullivan Mine. Cochise County, Arizona. 1945. WMR 375 - Penn Mine Slag Dump. Calaveras County, California. 1945. WMR 377 - Cowboy Tin Mine. Pennington County, South Dakota. 1945. WMR 408 - Stone Hill Copper Mine. Cleburne & Randolph Counties, Alabama. 1945. WMR 436 - Apex Property. Coconino County, Arizona. 1945. WMR 455 - Rush and Brown Mine. Kasaan Bay, Prince of Wales Island, Alaska. 1945. OFR 33-85 - A Copper-Cobalt Occurrence in the Cape Krusenstern Area, Northwestern Alaska. 1985. OFR 49-88 - Gold-Copper Mineralization of the Chilkat Peninsula & Islands, Alaska. 1988. OFR 127-76 - Biogenic Extraction of Copper & Molybdenum at High Temperatures. 1976. OFR 141-81 - Billings Glacier Molybdenum-Copper Occurrence, Whittier, Alaska. 1981. OFR 49-88 - Gold-Copper Mineralization of the Chilkat Peninsula & Islands, Alaska. 1988. WMR 061 - Ore Knob Mine. Ashe County, North Carolina. 1943. WMR 004 - Andover-Sulphur Hill Mine. Sussex County, New Jersey. 1942. WMR 006 - Ely Mine (Copperfield Mine). Orange County, Vermont. 1943. WMR 408 - Stone Hill Copper Mine. Cleburne & Randolph Counties, Alabama. 1945. WMR 375 - Penn Mine Slag Dump. Calaveras County, California. 1945. WMR 022 - Slauber Mine. Guadalupe County, New Mexico. 1942. OFR 33-85 - A Copper-Cobalt Occurrence in the Cape Krusenstern Area, Northwestern Alaska. 1985. WMR 282 - Atwood Group, Lordsburg District. Hidalgo County, New Mexico. 1944. WMR 286 - Rambler Mine. Albany County, Wyoming. 1944. WMR 337 - Sullivan Mine. Cochise County, Arizona. 1945. WMR 377 - Cowboy Tin Mine. Pennington County, South Dakota. 1945. WMR 236 - Green Mountain Copper Mine. Sanders County, Montana. 1944. WMR 078 - Blackbird District. Lemhi County, Idaho. 1943. WMR 455 - Rush and Brown Mine. Kasaan Bay, Prince of Wales Island, Alaska. 1945. WMR 436 - Apex Property. Coconino County, Arizona. 1945. OFR 127-76 - Biogenic Extraction of Copper & Molybdenum at High Temperatures. 1976. WMR 099 - Shamrock Copper. Jefferson County, Montana. 1943. WMR 265 - Copper Nugget Placer. Jefferson County, Montana. 1944. OFR 141-81 - Billings Glacier Molybdenum-Copper Occurrence, Whittier, Alaska. 1981.