Mine detail: Mount Robinson deposit

Previously called ''

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Location

Lat / long: 38.1139, -105.34557

Resource(B)

Primary: Aluminum, Potassium
Ore: Diaspore, Alunite
Gangue: Barite, Kaolinite, Quartz
Orebody form: BROAD LENS (VOLCANIC CONDUIT)
Discovery year: 1890

Production

Operation type: Unknown
Deposit type: Hydrothermal alteration
Production size: None
Development status: Occurrence

Geology

Host rock:Rosita Hills Rhyolite
Host type:Rhyolite
Associated type:Rhyolite
Alteration processes:Silicification, Alunitization, Kaolinization. Alteration Of Rhyolite To Alunite By Solfataric Action

References

MRDSD002158
DEP10009279
Reference{Analytical Data:: SRC.REF: THOENEN, J. R., 1941 , USBM R. I. 3561 , P. 13}{Deposit:: CROSS, C. W., 1891 , ON ALUNITE AND DIASPORE FROM THE ROSITA HILLS, COLORADO: AM. JOUR. SCI., 3RD SER., V. 41 , NO. 246 , P. 466 - 475 .}{Deposit:: CROSS, C. W., 1896 , GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPT., PT. 2 , P. 315 - 317 , 356 - 360 .}{Deposit:: CROSS, C. W., 1912 , ALUNITE DEPOSITS OF ROSITA HILLS, COLORADO, USGS BULL. 511 , P. 38 - 41 .}{Deposit:: GARDNER, L. S., 1943 , UNPUB. REPT. IN USGS FILE}{Deposit:: 1878 DIREXPL UNKNOWN: PROSPECTING WORKS}{Deposit:: 1883 GEOLMAP W. CROSS: PUB. REPTS.}{Deposit:: 1940 RECON USBM: R. I. 3561}{Deposit:: 1942 RECON L. S. GARDNER: UNPUB. REPT.}{Geology:: SHARP, W.N., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081, 1:24,000.}{Reserve-Resource:: THOENEN, J. R., 1941 , ALUNITE RESOURCES OF THE UNITED STATES: USBM REPT. INV. 3561 , P. 13 - 14 .}
ReporterHall, Robert B., Starritt, Bruce C., Intermountain Field Operations Center (IFOC), Collins, Donna B., Beach, Richard A.