| Deposit ID | 10087916 |
|---|---|
| MRDS ID | D010835 |
| Record type | Site |
| Current site name | Lost Mine |
| Alternate or previous names | Unpatented Claim: Lost |
| Geographic coordinates: | -107.90203, 37.39723 (WGS84) |
|---|---|
| Elevation | 2792 |
| Location accuracy | 250(meters) |
| Relative position | 8 MILES N 8 W FROM DURANGO |
Political divisions (FIPS codes)
La Plata(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Monument Hill(quadrangle 1:24,000 scale)
Durango(quadrangle 1:100,000 scale)
Durango(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Animas(hydrologic unit)
Upper San Juan(hydrologic accounting unit)
San Juan(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
San Juan National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | La Plata |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 036N | 009W | 07 | SW | Colorado |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Result | ASSAYS REPORTED BY ALLER (1932): FROM MAIN WORKING FACE: NO. 1, 0.38 OZ/TON AU AND 0.4 OZ/TON AG (FROM RIGHT SIDE OF FACE, AVG. 20 INCHES) |
|---|---|
| Result | NO. 2, 0.13 OZ/TON AU AND 0 AG (FROM MIDDLE OF FACE, AVG. 20 INCHES) |
| Result | NO. 3, 0.30 OZ/TON AU AND 0.1 OZ/TON AG (FROM LEFT SIDE OF FACE NEXT TO HANGING WALL, AVG. 20 INCHES) |
| Result | NO. 4, 2.27 OZ/TON AU AND 0.3 OZ/TON AG (RED CLAY FROM FACE) |
| Result | NO. 5, 0.34 OZ/TON AU AND 0.1 OZ/TON AG (4-INCH STREAK IN SEAM IN LOWER WORKINGS) |
| Result | NO. 6, 0.48 OZ/TON AU AND 0.1 OZ/TON AG (SELECTED ORE). |
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Host | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Shale | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone |
| Rock unit name | Dolores Formation |
| Rock description | Dolores Formation |
| (1) | -107.90203, 37.39723 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Uplift |
| Type of structure | Local |
| Structure description | La Plata Dome |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1931 |
| Year of last production | 1933 |
| District name | California (La Plata) District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | San Juan N. F. |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010835 |
ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 73-76, 138.
ALLER, F.D., 1932, REPORT ON A GROUP OF MINING CLAIMS IN THE CALIFORNIA MINING DISTRICT, LA PLATA CO., COLORADO, WITH A LETTER FROM FRANK W. LOTT AND L.G. INGERSALL: COLORADO STATE PLANNING COMM. UNPUB REPT., 4 P.
ECKEL AND OTHERS, 1949, P. 138 (AS REPORTED IN USBM RECORDS)
| Subject category | Comment text |
|---|---|
| Deposit | COUNTRY ROCKS CONSIST OF DOLORED FM RED BEDS CUT BY PORPHYRY DIKE AND POSSIBLE FAULT TRENDING NW-SE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-83 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.