| Deposit ID | 10014422 |
|---|---|
| MRDS ID | D011178 |
| Record type | Site |
| Current site name | Unnamed Manganese Prospect |
| Geographic coordinates: | -107.18396, 38.36139 (WGS84) |
|---|---|
| Elevation | 2591 |
| Relative position | 18.7 MILES S 48 W FROM GUNNISON |
Political divisions (FIPS codes)
Gunnison(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Gateview(quadrangle 1:24,000 scale)
Montrose(quadrangle 1:100,000 scale)
Montrose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Gunnison(hydrologic unit)
Gunnison(hydrologic accounting unit)
Gunnison(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management CO)
Bureau of Land Management CO BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | Colorado | Gunnison |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 047N | 003W | 02 | N2 OF N2 OF NW | Colorado |
| Commodity | Importance |
|---|---|
| Manganese Critical | Primary |
| Materials | Type of material |
|---|---|
| Psilomelane | Ore |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite | ||||||
| Rock unit name | Sapinero Mesa Tuff | ||||||
| Rock description | Sapinero Mesa Tuff | ||||||
| |||||||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| Rock unit name | Dubois Greenstone--Metavolcanic Hornblende Schist And Amphibolite;Lake Fork Formation--Tuffaceous Gravel And Volcanic Conglomerate |
| Rock description | Dubois Greenstone--Metavolcanic Hornblende Schist And Amphibolite;Lake Fork Formation--Tuffaceous Gravel And Volcanic Conglomerate |
| (1) | -107.18396, 38.36139 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Volcanic Field, Gunnison Uplift |
| Type of structure | Local |
| Structure description | Gunnison Gold Belt, Unnamed Faults, Tolvar Peak Stock |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Goose Creek District |
|---|
| Ownership category | BLM Administrative Area |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011178 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080510134 |
MUILENBURG, G.A., 1919, MANGANESE DEPOSITS OF COLORADO: CGS BULL, 15, P. 37-44.
OLSON, J.C., AND HEDLUND, D.C., 1973, GEOLOGIC MAP OF THE GATEVIEW QUADRANGLE, GUNNISON COUNTY, COLORADO: USGS MAP GQ-1071.
| Subject category | Comment text |
|---|---|
| Deposit | PROSPECT OCCUR IN BLACK VITROPHYRE AT BASE OF SAPINERO MESA TUFF, CHARACTERIZED BY CRYSTAL FRAGMENTS IN GROUNDMASS OF WELDED VITRIC ASH AND PUMICE AND BY REDDISH-BROWN SPHERULITES. VITROPHYRE IS OVERLAIN BY MAIN DEVITRIFIED WELDED TUFF, BOTH OF WHICH LIE IN FAULT CONTACT WITH DUBOIS GREENSTONE. FAULT WEST OF PROSPECTS TRENDS GENERALLY N 27 W. INTERSECTING THIS FAULT NW OF PROSPECTS IS SECOND FAULT TRENDING GENERALLY N 40 E. DEPOSIT IS BELIEVED TO BE SIMILAR TO THOSE DESCRIBED BY MUILENBURG (1919) CLOSER TO SAPINERO (SEE GOSS CLAIM). THERE, HIGHLY SILICEOUS IS HARD, COMPACT, FINELY GRANULAR, AND OCCURS AS BOTRYOIDAL MASSES IN POCKETS. FREQUENTLY OCCURS IN NETWORK OF SMALL VEINS UP TO FOUR INCHES WIDE, AND IN BRECCIA. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1983 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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