Mine detail: Lightning 2

Previously called 'Lightning No. 1-8Honest John No. 1-15Dac UraniumLightning Group'

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Location

Lat / long:

38.33334, -105.72391

Resource(M)

Primary:	Uranium
Ore:	Autunite, Uraninite
Gangue:	Kaolinite, Hematite, Limonite
Orebody form:	fissure vein, pipe, stockwork

Production

Operation type:	Surface-Underground
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Migmatitic Gneiss
Host type:	Gneiss
Associated rock:	Granodiorite Of Boulder Creek Age
Associated type:	Diorite
Structure:	Sangre De Cristo Range, Shear Zone Localized Ore, But Deposit Occurs Near Terminations Of Two Large Fault Zones: One On East Flank Of Sangre De Cristo Mtns (Trends Nw), One Trending North, North Of Cotopaxi (Cotopaxi Fault); Numerous Small Cross Faults; Between Alvarado Fault, Pleasant Valley Fault; Near Trend Of Oak Creek Paleovalley Of Oligocene To Miocene Age
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Kaolinization

References

MRDS	D009465
DEP	10013263
Reference	{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40, P. 149-150}{Deposit:: TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A. AND EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE COTOPAXI 15-MINUTE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-900, 1:62,500.}{Production:: NELSON-MOORE AND OTHERS, 1978}
Reporter	Collins, Donna B.