Mine detail: Spring Butte Mine

Previously called 'Ground Hog-Gypsum MineClaims: Ground HogDouble DeckerMary Mac 1-4'

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Location

Lat / long:

39.23138, -107.22258

Resource(B)

Primary:	Lead
Tertiary:	Gypsum-Anhydrite

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1926

Geology

Host rock:	Eagle Valley Formation
Host type:	Mudstone
Associated rock:	Middle Tertiary Intrusive Rocks
Associated type:	Quartz Monzonite,Diorite
Structure:	Central Colorado Trough, Grand Hogback Monocline, Piceance Basin, Elk Uplift, Roaring Fork Syncline, Snowmass Stock, Mt Sopris Intrusive Center, Crystal Embayment
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010141
DEP	10013707
Reference	{Deposit:: VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO: COLORADO STATE MINERAL RESOURCES BOARD, P. 178, 477}{Deposit:: TWETO, OGDEN, AND OTHERS, 1978, GEOLOGIC MAP OF THE LEADVILLE 1X2 QUADRANGLE, NORTHWESTERN COLORADO; USGS MAP I-999}{Deposit:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.}{Deposit:: MALLORY, W.W., 1971, THE EAGLE VALLEY EVAPORITE, NORTHWEST COLORADO-A REGIONAL SYNTHESIS: USGS BULL. 1311-E.}
Reporter	Schwochow, Stephen D.