Montana · Madison County
Past Producer

Surprise Mine

Madison County, Montana, United States
Gold
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeS
Materials
GangueHematite, Limonite, Quartz
Geology
Host rockQuartzite · Lahood Formation, Sandstone And Sandy Shale
StructureBelt Sandstone Trends N-S, 25 W., Fissure Zone
AlterationOxidation, Contact Metamorphism
Economic & production
Development statusPast Producer
Identification
Deposit ID10101570
MRDS IDD004994
RegionNA
Data scoreC
Coordinates45.79434, -112.09393
References
USGS BULL 574, P. 100.BERG, A.B., GEOLOGY OF THE NORTHWEST CORNER OF THE TOBACCO ROOT MOUNTAINS, MADISON CO., MT., UNIV. OF MINN., M.S. THESIS, 1959.1914 RECON WINCHELL, A.N., U.S.G.S. BULL. 574