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Mine detail: Dark Horse Mine
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North America
United States
Montana
Powell
Previously called ''
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Location
Lat / long:
46.30017, -112.99535
Resource(M)
Primary:
Gold
Secondary:
Silver, Copper
Ore:
Gold
Gangue:
Limonite, Quartz
Orebody form:
LENS
Discovery year:
1918
Production
Operation type:
Unknown
Production size:
Small
Development status:
Past Producer
First production started:
1931
Last production ended:
1940
Geology
Host rock:
Hasmark Formation
Host type:
Limestone
Associated rock:
Mt. Powell Batholith
Associated type:
Diorite
Structure:
Mount Powell Batholith, Racetrack Pluton
Alteration processes:
Oxidation
References
MRDS
D005577
DEP
10011235
Reference
{Deposit:: MBMG BULL 84, P. 48.}{Deposit:: MBMG BULL 98, P. 25, 61.}{Production:: MBMG BULL 98, P. 61.}
Reporter
Wise, Kristine K. (Elliott, James E.)