Montana · Lewis and Clark County
Occurrence
Big Ben
Lewis and Clark County, Montana, United States
Feldspar
Gold
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USGS source ↗
Commodities
Primary
Feldspar
Tertiary
Gold
Commodity type
B
Deposit
Deposit type
Vein
Deposit size
N
Workings
Surface
Orebody form
IRREGULAR
Ore control
Pegmatite Dike
Materials
Ore minerals
Gold
Geology
Host rock
Clastic Sedimentary Rock · Spokane Formation;Belt Series
Associated rock
Quartz Monzonite · Boulder Batholith
Economic & production
Development status
Occurrence
Identification
Deposit ID
10022860
MRDS ID
FS00361
Region
NA
Data score
D
Coordinates
46.8024, -112.44257
References
FS FILES1942 DIREXPL USF