Mine detail: Blackjack Group

Previously called ''

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Location

Lat / long:

38.6175, -105.9467

Resource(M)

Primary:	Manganese
Secondary:	Iron
Ore:	Limonite, Pyrolusite, Siderite
Discovery year:	1933

Production

Operation type:	Unknown
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Leadville Limestone
Host type:	Limestone
Associated rock:	Granodiorite (Calumet Granodiorite)
Associated type:	Diorite
Structure:	Southern Mosquito Range, N-S-Trending Fault, Pleasant Valley Syncline
Tectonic:	Central Cordillera (Southern Rocky Mountains)
Alteration processes:	Oxidation

References

MRDS	D010516
DEP	10013944
Reference	{Deposit:: OSBORN, E.F. AND RAINWATER, E.H., 1934, GEOLOGY OF THE CALUMET, COL ORADO MINING DISTRICT: ILLINOIS NORTHWESTERN UNIVERSITY UNPUBLISHED MA STER OF ARTS THESIS, P. 132-133}{Deposit:: SCOTT, G.R., TAYLOR, R.B., EPIS, R.C. AND WOBUS, R.A., 1978, GEOLOG IC MAP OF THE PUEBLO 10 X 20 QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAP I-1022 1:250,000}{Deposit:: BEHRE, C.H., JR., OSBORN, E.F., RAINWATER, E.H., 1936, CONTACT ORE DEPOSITION AT THE CALUMET IRON MINE, COLORADO: ECONOMIC GEOLOGY, V. 31 , NO. 8, P. 804.}
Reporter	Collins, Donna B.