Montana · Granite County
Past Producer

Nancy Hanks Mine

Granite County, Montana, United States
GoldSilverCopperLeadBarium-BariteAntimony
⌖ Show on mapUSGS source ↗
Description

S. I. Ritchey

Commodities
PrimaryGold, Silver
SecondaryCopper, Lead
TertiaryBarium-Barite, Antimony
Commodity typeB
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formTABULAR
Ore controlGarnet Stock, Deep Creek Anticline, Hasmark Formation
Materials
Ore mineralsChalcopyrite, Galena, Gold, Tetrahedrite
GangueBarite, Limonite, Pyrite, Quartz
Geology
Host rockDiorite,Limestone · Hasmark Formation
Associated rockDiorite · Garnet Stock
StructureBearmouth Overthrust, Deep Creek Anticline, Mount Baldy Synclinorium, Stock Has Intruded Northern Limb Of Deep Creek Anticline Which Trends About N 70 E And Plunges About 30 Deg. W. Post Ore Movement In Plane Of Vein Has Severely Crushed Ore In Many Places. Veins Have Been Cut By Transverse And Strike Faults, But Few Have Displacements Greater Than 1 M.
Tectonic settingCordilleran Miogeosyncline
Economic & production
Development statusPast Producer
First production1896
Discovery year1874
Identification
Deposit ID10071334
MRDS IDW014667
Alternate namesMinnie Palmer
RegionNA
Data scoreB
Coordinates46.82739, -113.34621
References
USGS BULL 660, P. 182-184.MBMG MEM NO 31 P. 32.MBMG MEM NO 39, P. 28.MBMG BULL 82, P. 8.USGS BULL. 660-F, MBMG MEM. 39