Colorado · Boulder County
Past Producer

Cold Spring and Red Cloud

Boulder County, Colorado, United States
GoldSilver
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold, Silver
Commodity typeM
Deposit
Model84: Alkaline Au-Te (Au-Ag-Te veins)
Materials
Ore mineralsTelluride, Petzite, Sylvanite, Pyrite, Galena
Geology
Host rockGranite,Monzonite · "Boulder Creek Granite", "biotite monzonite porphyry dike"
Economic & production
Development statusPast Producer
Discovery year1872
Identification
Deposit ID10263232
MRDS IDDC05029
Alternate namesCold Spring Mine, Cold Springs Mine
RegionNA
Data scoreB
Coordinates40.06595, -105.40611
References
MINE MAP REPO # 401209DMEA DOCK[et] # 2685Lovering, T.s., and Goddard, E.N., 1950, Geology and ore deposits of the Front Range, Colorado: USGS Prof. Paper 223, 319 p.