Mine detail: John Spalding

Previously called 'Spaulding'

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Location

Lat / long:

38.2289, -105.26863

Resource(B)

Primary:	Barium-Barite, Thorium
Secondary:	Lead
Ore:	Thorite
Gangue:	Barite, Chlorite, Galena, Hematite, Quartz, Serpentine
Orebody form:	TABULAR
Discovery year:	1951

Production

Operation type:	Surface-Underground
Production size:	None
Development status:	Prospect

Geology

Host rock:	Alaskitic Granite Gneiss
Host type:	Gneiss
Associated rock:	Microcline Granite
Associated type:	Granite
Structure:	Wet Mountains, Shear Zone
Tectonic:	Central Cordillera (Southern Rocky Mountains)

References

MRDS	D008252
DEP	10012568
Reference	{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B.AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULLETIN 40, P. 121-122.}{Deposit:: CHRISTMAN, R.A., HEYMAN, A.M., DELLWIG, L.F. AND GOTT, G.B., 1953, THORIUM INVESTIGATIONS 1950-52, WET MOUNTAINS, COLORADO: USGS CIRCULAR 290, P. 27.}{Deposit:: BROCK, M.R. AND SINGEWALD, Q.D., 1968, GEOLOGIC MAP OF THE MOUNT TYNDALL QUADRANGLE, CUSTER COUNTY, COLORADO: USGS MAP GQ-596, 1:24,000}
Reporter	Collins, Donna B.