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Grab Mine (Western Consolidated group; Stowell Mine), Sugarloaf Mountain (3), West Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA
Latitude: 40°42'45"N
Longitude: 122°30'52"W
Longitude: 122°30'52"W
Mineralization is a massive sulphide deposit hosted in rhyolite (Deposit model code 184; USGS model code 28a; Massive sulfide, kuroko). The ore body(ies) is(are) massive (tabular, lenticular) at 8 meters thick, and with a depth-to-top of 91 meters, a width of 16 meters and a length of 95 meters. The primary mode of origin was hydrothermal and the secondary mode was contact metasomatism. Primary ore control was folding and secondary was faulting. Alteration of the wallrock was moderate (argillic, propylitic and pyritization). Local rocks include carboniferous marine rocks, unit 4 (Eastern Klamath Mountains) and/or Paleozoic metavolcanic rocks, unit 1 (Eastern Klamath Mountains).
Local structures include faults.
Workings included unspecified underground openings.
Mineral List
| Chalcopyrite Gold | Pyrite Silver | Sphalerite |
5 entries listed. 5 valid minerals.
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References
Eric, J.C. (1948), Tabulation of Copper Deposits in California in: Copper in California: California Division of Mines Bulletin 144: 197-387.
Kinkel, Arthur Rudolph, Jr., Wayne E. Hall & J.P. Albers (1956) Geology and base metal deposits of west Shasta copper-zinc district, Shasta County, California: USGS Professional Paper 285, 156 pp.: 146-149, Pl. 4.
Clawson, R. F. (1969), Squaw Creek Copper Investigation: California Department of Water Resources Memoir Report, 29 p.
Moore, Lyman (1970), Copper Resources and Production of West Shasta Mining District, U.S. Bureau of Mines Report 85.
Lydon, Philip Andrew and O’Brien, J.C. (1974) Mines and mineral resources of Shasta County, California. California Division of Mines and Geology County Report 6, 154 pp.: 109.
Hillman, C.T., Schumacher, O. and Gosling, B. (1977), The West Shasta County California, U.S. Bureau of Mines MAS Report, 40 pp.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10213838, 10110465 & 10077590.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060890364.
Kinkel, Arthur Rudolph, Jr., Wayne E. Hall & J.P. Albers (1956) Geology and base metal deposits of west Shasta copper-zinc district, Shasta County, California: USGS Professional Paper 285, 156 pp.: 146-149, Pl. 4.
Clawson, R. F. (1969), Squaw Creek Copper Investigation: California Department of Water Resources Memoir Report, 29 p.
Moore, Lyman (1970), Copper Resources and Production of West Shasta Mining District, U.S. Bureau of Mines Report 85.
Lydon, Philip Andrew and O’Brien, J.C. (1974) Mines and mineral resources of Shasta County, California. California Division of Mines and Geology County Report 6, 154 pp.: 109.
Hillman, C.T., Schumacher, O. and Gosling, B. (1977), The West Shasta County California, U.S. Bureau of Mines MAS Report, 40 pp.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10213838, 10110465 & 10077590.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060890364.
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