| Deposit ID | 10012933 |
|---|---|
| MRDS ID | D008956 |
| Record type | Site |
| Current site name | Porphyry Peak Alunite Deposit |
| Geographic coordinates: | -106.16282, 38.34251 (WGS84) |
|---|---|
| Elevation | 3475 |
| Location accuracy | 500(meters) |
| Relative position | 17.5 MILES N 5 W OF SAGUACHE |
Political divisions (FIPS codes)
Saguache(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Bonanza(quadrangle 1:24,000 scale)
Saguache(quadrangle 1:100,000 scale)
Montrose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
San Luis(hydrologic unit)
Rio Grande Headwaters(hydrologic accounting unit)
Rio Grande Headwaters(hydrologic subregion)
Rio Grande(hydrologic region)
Federal lands
Pike and San Isabel National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Saguache |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 047N | 007E | 11 | E2 | Colorado |
| Materials | Type of material |
|---|---|
| Alunite | Ore |
| Rutile | Ore |
| Jasper | Gangue |
| Quartz | Gangue |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite | ||||||||
| Rock unit name | Porphyry Peak Rhyolite | ||||||||
| Rock description | Porphyry Peak Rhyolite | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| Rock unit name | Porphyry Peak Rhyolite |
| Rock description | Porphyry Peak Rhyolite |
| (1) | -106.16282, 38.34251 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Sawatch Range, San Juan Volcanic Field, Rio Grande Rift |
| Type of structure | Local |
| Structure description | Bonanza Caldera |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Bonanza (Kerber Creek) District |
|---|
| Ownership category | National Forest |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D008956 |
BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, P
| Subject category | Comment text |
|---|---|
| Deposit | ALTHOUGH FORMATION IS MOSTLY FLOWS AND TUFFS, SOLFATARIC ALTERATION CHARACTERISTIC OF ALUNITE OCCURRENCES INDICATES THAT SOME OF THE RHYOLITE IS OF INTRUSIVE ORIGIN, PROBABLY FROM A BURIED VENT, FISSURE, OR NECK. ROCK HAS BEEN COMPLETELY ALTERED TO TOUGH JASPERY MASSES OF QUARTZ, ALUNITE, AND MINOR AMOUNTS OF OTHER MINERALS INCLUDING RUTILE |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1982 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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