Colorado · La Plata County
Occurrence

Mastadon Mine

La Plata County, Colorado, United States
SilverLeadGold
⌖ Show on mapUSGS source ↗
Description

Mastodon Group Of Gold And Silver Mines Co. (Claimant)

Commodities
PrimarySilver
SecondaryLead, Gold
Commodity typeM
Deposit
Deposit typeVein
Model85: Polymetallic veins
Deposit sizeN
Materials
GangueChlorite, Limonite, Quartz
Geology
Host rockGneiss · Irving Formation
Associated rockQuartz Monzonite,Rhyolite,Granite · Eolus Granite;Intrusive Bodies And Related Rocks (Younger And Older Bodies Of Chicago Basin Stock)
StructureSan Juan Uplift, San Juan Basin, San Juan Volcanic Field, Needle Mtns Uplift, Eolus Batholith, Chicago Basin Stock, Trimble Stock
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusOccurrence
Discovery year1900
Identification
Deposit ID10014085
MRDS IDD010709
Alternate namesPatented Claims: Golden Cross No. 1, MS 14152, Golden Needle, MS 14152, Air Line, MS 14152, Golden Slipper No. 1, MS 14152, Golden Slipper No. 2, MS 14152, Patented Claims: Golden Cross No. 1, MS 14152a, Golden Needle, MS 14152a, Air Line, MS 14152a, Golden Slipper No. 1, MS 14152a, Golden Slipper No. 2, MS 14152a, Golden Cross Mill Site, MS 14152b, Green River, MS 15230, Grand View, MS 15230, Tip Top, MS 15230, American, MS 15231, Sideline, MS 15231, Washington, MS 15231, Crown, MS 15231
RegionNA
Data scoreB
Coordinates37.62029, -107.68453
References
CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.SCHMITT, L.J., AND RAYMOND, W.H., 1977, GEOLOGY AND MINERAL DEPOSITS OF THE NEEDLE MOUNTAINS DISTRICT, SOUTHWESTERN COLORADO: USGS BULL. 1434, 40 P.STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F.SCOTT, D.C., 1983, MINERAL INVESTIGATION OF THE WEST NEEDLE WILDERNESS STUDY AREA AND THE BLM WEST NEEDLE CONTIGUOUS WILDERNESS STUDY AREA, LA PLATA AND SAN JUAN COUNTIES, COLORADO: USBM MLA 35-83, P. 6, 26-35BLM MINERAL SURVEYS MS 14152, 15230, 15231