| Deposit ID | 10211836 |
|---|---|
| MRDS ID | M021565 |
| MAS/MILS ID | 0060430459 |
| Record type | Site |
| Current site name | Colorado Mine |
| Alternate or previous names | Colorado Quartz Mine |
| Related records | 10034689 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -119.97288, 37.55463 (WGS84) |
| Elevation | 838 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Mariposa(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Feliciana Mountain(quadrangle 1:24,000 scale)
Yosemite Valley(quadrangle 1:100,000 scale)
Mariposa(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Merced(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management CA)
Bureau of Land Management CA BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | California | Mariposa |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 004 S | 018 E | 27 | California |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Main Entrance (1) | Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains) |
|---|
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Ownership category | Private |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Colorado Quartz Gold Mining Co. |
| ID | 403828 |
| Year | 1990 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060430459 | |
| USGS | Mineral Resources Data System | MRDS | M021565 | MAS references MRDS |
| Mine Safety and Health Administration | MSHA | MSHA | 0403828 |
CALIF. JOUR. MINES AND GEOL., V. 53, 1957, P. 90-91.
CALIF. DIV. MINES AND GEOL. SPECIAL PUBLICATION 103, 1990,
P.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 25-SEP-1990 | Ridenour, James | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 03/20/2023 |
|---|---|
| MSHA mine ID | 0403828 |
| Mine name (MSHA) | Colorado Quartz |
| Current operator | Colorado Quartz Gold Corp |
| Current controller (parent) | Dave C Varabioff |
| Mine type | Underground (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.