| Deposit ID | 10189751 |
|---|---|
| MRDS ID | M700416 |
| MAS/MILS ID | 0060790034 |
| Record type | Site |
| Current site name | Pick and Shovel Mine |
| Alternate or previous names | Safety Mine, Safety Chrome Mine |
| Related records | 10048018 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -120.66907, 35.35777 (WGS84) |
| Elevation | 463 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
San Luis Obispo(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
San Luis Obispo(quadrangle 1:24,000 scale)
San Luis Obispo(quadrangle 1:100,000 scale)
San Luis Obispo(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Central Coastal(hydrologic unit)
Central California Coastal(hydrologic accounting unit)
Central California Coastal(hydrologic subregion)
California(hydrologic region)
Federal lands
Los Padres National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | California | San Luis Obispo |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 029 S | 012 E | 34 | SESWSE | California |
| Commodity | Importance |
|---|---|
| Chromium Critical | Primary |
| Iron | Tertiary |
| Materials | Type of material |
|---|---|
| Chromite | Unknown |
| Magnesite | Unknown |
| Manganite | Unknown |
| Serpentine | Unknown |
| Main Entrance (1) | -120.66907, 35.35777 |
|---|
| Strike | N55W | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 45N | ||||||||||||||||||||||||||||||||||
| Thickness | 20M | ||||||||||||||||||||||||||||||||||
| Length | 200M | ||||||||||||||||||||||||||||||||||
| Width | 100M | ||||||||||||||||||||||||||||||||||
| Area | 4.2HA | ||||||||||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1880 |
| Year of first production | 1880 |
| District name | Cuesta Pass |
|---|
| Type of mineral rights | Other |
|---|
| Ownership category | State |
|---|
| Type | Operator |
|---|---|
| Owner | Pierce, W. D. -Last Operator 1958 |
| Home office | California |
| Year | 1976 |
| Type | Owner |
|---|---|
| Owner | Camp San Luis Obispo Miltary Reservation-Cal Natl Guard |
| Interest | 100 |
| Home office | California |
| Year | 1976 |
| Year | 1880 |
|---|---|
| Description | Lump Ore Mined From 1880-1910 4800 Mt |
| Year | 1917 |
|---|---|
| Description | Lump Ore Mined From 1917-1918 5200 Mt @ 45 Pct |
| Year | 1942 |
|---|---|
| Description | Lump Ore Mined 95 Mt |
| Year | 1943 |
|---|---|
| Description | Lump Ore Mined 56 Mt |
| Year | 1954 |
|---|---|
| Description | Concentrate Produced From 1953-1988 74 Mt @ 48 Pct |
| Year | 1954 |
|---|---|
| Description | Lump Ore Mined From 1953-1958 720 Mt @ 46.76 Pct |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060790034 | |
| USGS | Mineral Resources Data System | MRDS | M700416 | MAS references MRDS |
CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD, CENTRAL
COAST REGION. SURFACE WATER DEGRADATION BY INACTIVE
METAL MINES IN NORTHWEST SAN LUIS OBISPO COUNTY, CA,
DECEMBER 1993 (P. 6-8).
CALIF. STATE MINING BUR. BULLETIN 76, 1918, P. 174-175.
CALIF. JOUR. MINES AND GEOL. V. 37, 1941, P. 163.
U.S. GEOLOGICAL SURVEY BULLETIN 945-B, 1944, P. 40.
CALIF. DIV. MINES BULLETIN 134, 1953, PART II, CHAPT. 2,
P. 64.
| Subject category | Comment text |
|---|---|
| Environmental Factors | CHROMITE DEPOSITS IN THE CHORRO CREEK WATERSHED ARE NOT SULFIDES WITH POTENTIAL TO GENERATE ACID MINE DRAINAGE THOUGH THEY MAY ERODE CHROMIUM, ALUMINUM, MAGNESIUM, IRON, MANGANESE, TITANIUM, CALCIUM, SILICON, AND NICKEL TO THE WATERSHED. METALS WHICH APPEAR TO BE ERODING FROM INACTIVE MINES INCLUDE MAGNESIUM, IRON, NICKEL, AND CHROMIUM. SAN LUISITO CREEK, PENNINGTON CREEK, AND UPPER CHORRO CREEK APPEAR TO BE THE MOST HEAVILY MINE-IMPACTED TRIBUTARIES IN THE CHORRO CREEK WATERSHED. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 24-MAY-1996 | Wetzel, Nicholas | U.S. Bureau of Mines |
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.