Montana · Deer Lodge County
Past Producer
Twilight Mine
Deer Lodge County, Montana, United States
Gold
Iron
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USGS source ↗
Commodities
Primary
Gold
Secondary
Iron
Commodity type
M
Deposit
Deposit size
S
Workings
Underground
Orebody form
IRREGULAR
Materials
Ore minerals
Gold, Hematite, Iron, Limonite
Gangue
Pyrite, Quartz
Geology
Host rock
Limestone · Hasmark Formation
Associated rock
Diorite · Cable Stock
Structure
Philipsburg Batholith, Cable Stock
Alteration
Pyritization, Oxidation
Economic & production
Development status
Past Producer
Production years
PRE-1906
Identification
Deposit ID
10102002
MRDS ID
DC10952
Region
NA
Data score
B
Coordinates
46.21739, -113.24619
References
MONT. BUREAU OF MINES & GEOL. INF. CIRC. 13, 1956, PL. 4USGS PP 78, P. 235.CALKINS, AND EMMON 1913 USGS PROF. PAPER 78