The Brumfield is a gold mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Brumfield MRDS details
Site Name
Primary: Brumfield
Commodity
Primary: Gold
Location
State: Alaska
District: Fairbanks
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Saunders, 1963
Comment (Workings): Workings / Exploration = Saunders (1963) reported that placer mining was done using a small crawler-type tractor for stripping moss and one or two feet of overburden. The remaining two to four feet of gravel was shoveled by hand into a 6-inch sluice box.
Comment (Deposit): Model Name = Residual placer on a decomposed, quartz-veined granite porphyry(?)
Comment (Production): Production Notes = The production data are not available.
Comment (Geology): Geologic Description = Hill (1933) shows a granite porphyry extending along the ridge south of Gilmore Creek from the head of Engineer Creek to the head of Pearl Creek, a distance of about 7 miles. All of the bedrock exposed by placer mining is part of this intrusion (Saunders, 1963). Gold is found throughout the granitic bedrock and also occurs in narrow quartz veinlets that carry visible free gold (Saunders, 1963). Saunders (1963) reported that placer mining was done using a small crawler-type tractor for stripping moss and one or two feet of overburden. The remaining two to four feet of gravel was shoveled by hand into a 6-inch sluice box. The descriptions are somewhat unclear, but this may be a residual placer on a decomposed, quartz-veined granite.
References
Reference (Deposit): Saunders, R.H., 1963, Examination of a gold prospect on Nugget Creek: Alaska Territorial Department of Mines Prospect Evaluation 58-14, 2 p.
Reference (Deposit): Hill, J.M., 1933, Lode deposits of the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 849-B, p. 29-163.
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