Oregon · Grant County
Past Producer
Porphyry Mill Claims
Grant County, Oregon, United States
Gold
Silver
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USGS source ↗
Commodities
Primary
Gold, Silver
Commodity type
M
Deposit
Deposit size
S
Materials
Gangue
Quartz, Sericite
Geology
Host rock
Slate
Associated rock
Plutonic Rock
Economic & production
Development status
Past Producer
Identification
Deposit ID
10098344
MRDS ID
M015747
Region
NA
Data score
C
Coordinates
44.71374, -118.79384
References
PARKS, H.M. AND SWARTLEY, A.M., 1916, METAL MINES HANDBOOK; OREGON BUREAU OF MINES VOL. 2, P. 182