| Lat / long: | 38.23889, -107.05673 |
| Primary: | Vermiculite |
| Gangue: | Augite, Biotite, Magnetite |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1943 |
| Last production ended: | 1944 |
| Host type: | Pyroxenite |
| Associated rock: | Pyroxenite;Uncompahgrite;Carbonatite;Nepheline Syenite |
| Associated type: | Pyroxenite |
| Structure: | Gunnison Uplift, San Juan Volcanic Field, Iron Hill Alkalic Complex, Cimarron Fault, Powderhorn Stock |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Alteration processes: | Alteration Of Biotite And/Or Phlogopite To Vermiculite |
| MRDS | D011387 |
| DEP | 10014562 |
| Reference | {Deposit:: OLSON, J.C., 1974, GEOLOGIC MAP OF THE RUDOLPH HILL QUADRANGLE, GUNNISON, HINSDALE, AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1177.}{Deposit:: BUSH, A.L., 1951, SOURCES OF LIGHTWEIGHT AGGREGATES IN COLORADO: COLORADO SCI. SOC. PROC., V. 15, NO. 8, P. 339-340.}{Deposit:: LA PLANTE, F.R., 1943, GUNNISON COUNTY ACTIVITIES: COLORADO MINING ASSOC. 1943 MINING YEARBOOK, P. 35-36.}{Deposit:: ALEXANDER, J.D., 1944, ALEXIT* YEAR OF GROWTH: COLORADO MINING ASSOC. 1944 MINING YEARBOOK, P. 85.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.} |
| Reporter | Schwochow, Stephen D. |