Mine detail: Old Leyden Mine

Previously called ''

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Location

Lat / long:

39.84999, -105.23114

Resource(M)

Primary:	Coal, Uranium
Ore:	Coffinite, Uraninite, Uranophane
Gangue:	Marcasite, Pyrite
Orebody form:	TABULAR
Discovery year:	1874

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1950
Last production ended:	1956

Geology

Host rock:	Laramie Formation
Host type:	Claystone,Sandstone,Coal
Structure:	Denver Basin, Front Range Uplift, Golden Fault
Tectonic:	Central Platform

References

MRDS	D009853
DEP	10013508
Reference	{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 194}{Deposit:: SIMS, P.K., AND SHERIDAN, D.M., 1964, GEOLOGY OF URANIUM DEPOSITS IN THE FRONT RANGE, COLORADO: USGS BULL. 1159, P. 104-105}
Reporter	Banke, Carl M., Spanski, Gregory T.