| Deposit ID | 10013236 |
|---|---|
| MRDS ID | D009423 |
| Record type | Site |
| Current site name | Aspen Mine |
| Alternate or previous names | Claim: Aspen |
| Related records | 10215358 |
| Geographic coordinates: | -106.8234, 39.17832 (WGS84) |
|---|---|
| Elevation | 2707 |
| Relative position | 0.75 MILES S 20 W FROM ASPEN |
Political divisions (FIPS codes)
Pitkin(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Aspen(quadrangle 1:24,000 scale)
Leadville(quadrangle 1:100,000 scale)
Leadville(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Roaring Fork(hydrologic unit)
Colorado Headwaters(hydrologic accounting unit)
Colorado Headwaters(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
White River National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Pitkin |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 010S | 085W | 13 | SE OF SE | Colorado |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Lead | Primary |
| Zinc Critical | Primary |
| Materials | Type of material |
|---|---|
| Argentite | Ore |
| Sphalerite | Ore |
| Barite | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||||
| Rock unit name | Aplite Porphyry | ||||||
| Rock description | Aplite Porphyry | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Dolomite |
| Rock unit name | Leadville Limestone (Redcliff And Castle Butte Members);Belden Formation |
| Rock description | Leadville Limestone (Redcliff And Castle Butte Mbrs);Belden Formation |
| (1) | -106.8234, 39.17832 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Sawatch Uplift, Central Colorado Trough, Piceance Basin, White River Uplift, Elk Uplift |
| Type of structure | Local |
| Structure description | Silver Fault, Contact Fault, Aspen Mountain Syncline, Aspen Fault, Tourtelotte Park Uplift |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1884 |
| Discoverer | Elmer T. Butler And Others (Claimants) |
| District name | Aspen (Roaring Fork) District |
|---|
| Ownership category | Private |
|---|
| Type of workings | Underground |
|---|---|
| Overall depth | 457.2M |
| Overall length | 304.8M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D009423 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080970025 |
SPURR, J.E., 1898, GEOLOGY OF THE ASPEN DISTRICT, COLORADO: USGS MON. 31, P. 155-157, PL. 40
BRYANT, BRUCE, 1971, GEOLOGIC MAP OF THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP GQ-933.
BRYANT, BRUCE, 1972, MAP SHOWING MINES, PROSPECTS, AND AREAS OF SIGNIFICANT SILVER, LEAD, AND ZINC PRODUCTION IN THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP I-785-D
BLM MINERAL SURVEY MS 3641
| Subject category | Comment text |
|---|---|
| Deposit | DOLOMITE AND LIMESTONE BEDS ON EAST LIMB OF ASPEN MTN SYNCLINE STEEPEN TO HIGH-ANGLE WESTWARD DIP TO OVERTURNED (TO EAST), THENCE INTO GENTLE DIPS ON SYNCLINAL AXIS. ALONG PORTION OF STEEPEST DIP, NEAR-VERTICAL ASPEN FAULT TRUNCATES CONTACT AND SILVER FAULTS, WITH SILVER FAULT DISAPPEARING MUCH HIGHER ON THE FAULT PLANE. ORE FOUND MOSTLY IN CONTACT FAULT AND IN 70-TO 200-FT-WIDE ZONE BETWEEN CONTACT AND ASPEN FAULTS. ZONE IS COMPLICATED BY NUMEROUS SMALLER FAULTS AND FRACTURES AND MAJOR FAULT ABOVE AND SUBPARALLEL TO CONTACT FAULT. SPURR NOTED THAT ORE OCCURS IN FAULTS OF BOTH LARGE AND SMALL DISPLACEMENT AND AT INTERSECTIONS OF FAULTS. VERTICAL ORIENTATION OF BEDS, FAULTS, AND ORE BODIES ENABLED CONTINUOUS STOPING DOWN TO DEPTHS OF ABOUT 1500 FT. OXIDIZED ORES (CARBONATES AND OXIDES) OCCUR IN UPPER MINE LEVELS. ON THIRD LEVEL NEAR ASPEN SHAFT, AG SULFIDE REPORTEDLY RUNNING ABOUT 200 OZ/TON OCCURRED IN UNALTERED BLUE LIMESTONE WITH NO DOLOMITE, QUITE DIFFERENT THAN |
| Deposit | CHARACTERISTIC OCCURRENCE FOR DISTRICT. SOME ORE ALONG CONTACT FAULT COULD REPRESENT REPLACEMENT IN PALEOKARST ZONE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-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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