| Deposit ID | 10138664 |
|---|---|
| MRDS ID | M006413 |
| MAS/MILS ID | 0060091723 |
| Record type | Site |
| Current site name | Calaveras Asbestos |
| Alternate or previous names | American Asbestos, Jefferson Lake Asbestos, Asbestos Products Co. |
| Related records | 10029067 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -120.5468, 37.93771 (WGS84) |
| Elevation | 296 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Calaveras(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
New Melones Dam(quadrangle 1:24,000 scale)
Oakdale(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Stanislaus(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Calaveras |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 001 N | 013 E | 16 | E2 | California |
| Commodity | Importance |
|---|---|
| Asbestos | Primary |
| Water, Free | Tertiary |
| Materials | Type of material |
|---|---|
| Asbestos | Unknown |
| Ore Body (1) | -120.5468, 37.93771 |
|---|
| Strike | N20W | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 20E | ||||||||||||||||||||||||||||||
| Thickness | 300M | ||||||||||||||||||||||||||||||
| Length | 716M | ||||||||||||||||||||||||||||||
| Width | 500M | ||||||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||
| Area | 84HA | ||||||
|---|---|---|---|---|---|---|---|
| |||||||
| Operation type | Surface |
|---|---|
| Development status | Past Producer |
| Commodity type | Non-metallic |
| Significant | Yes |
| Discovery year | 1904 |
| Mining method | Open Pit |
| Year of first production | 1904 |
| Milling method | Sizing |
| Type of mineral rights | Fee Ownership |
|---|---|
| Type of mineral rights | Located Claim |
| Ownership category | Mixed |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Calaveras Asbestos Ltd. |
| ID | 402547 |
| Interest | 100 |
| Home office | California |
| Year | 1981 |
| Type of workings | Surface | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Area | 36HA | ||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060091723 | |
| Mine Safety and Health Administration | MSHA | MSHA | 0402547 |
ARGALL,GEORGE O. 1962, ASBESTOS AWAKENS MOTHER LODE AT THE
JEFFERSON LAKE MINE AND MILL: MINING WORLD;SEPT. 1962 P22-27
CALIFORNIA DIVISION OF MINES,1972,CALIFORNIA GEOLOGY,
ASBESTOS:VOL. 25 NO.10, P.220
CALIFORNIA DIVISION OF MINES, MINERAL COMMODITIES OF
CALIFORNIA. ASBESTOS: BULL. 176, PP 49-58
CLARK,WILLIAM B. 1962, MINES AND MINERAL RESOURCES OF
CALAVERAS COUNTY, CALIFORNIA: CALIF. DIV. MINES COUNTY RE-
PORT 2, P 20-21
CLIFTON,R.A. MINERAL COMMODITY SUMMARIES 1981: U.S. BUREAU
OF MINES
CLIFTON,RA, 1980, ASBESTOS CHAPTER: US BUMINES BULL. 671
CLIFTON, R.A. 1980, ASBESTOS CHAPTER: US BUMINES MINERALS
YEARBOOK, VOL. I, METALS AND MINERALS
HUTTL,JOHN, 1962, JEFFERSON LAKE, CALIFORNIA'S PREMIER AS-
BESTOS PRODUCER: E AND M.J. VOL. 163 NO. 10
HARBER,PETER, 1980, WHATS NEW AFTER ASBESTOS, NATIONAL WORK-
SHOP ON SUBSTITUTES FOR ASBESTOS, SPONSORED BY ENVIRONMENTAL
PROTECTION AGENCY AND CPSC: INDUSTRIAL MINERALS, SEPT. 1980
KELLEY,F.R., 1975, PACIFIC ASBESTOS CORPORATION EXAMINATION
REPORT: CALIF. DIV. MINES FILE DATA
KEY; WALLACE W., USE OF MINERAL FILLERS, GRANULES, AND ROOF-
ING ROCK IN CALIFORNIA ASPHALT-CONSUMING INDUSTRIES: USBM
IC 8300
LINN,ROBERT K., 1968, NEW IDRIA MINING DISTRICT: AIME ORE
DEPOSITS OF THE UNITED STATES, PART 2, CHAPTER 78, PP 1624
THRU 1649
MESSEL, MICHAEL J., 1947, EXAMINATION AND VALUATION OF
CHRYSOTILE ASBESTOS DEPOSITS OCCURRING IN MASSIVE SERPENTINE
AIME VOL. 173, PP 79-93
RICE, S.J., 1966, MINERAL RESOURCES OF CALIF: CALIF. DIV.
MINES BULL. 191, PP 86-93
PACIFIC GAS AND ELECTRIC COMPANY, 1962, MOTHER LODE
ASBESTOS: P.G. AND E. PROGRESS REPORT, VOL. NO. 39, NO. 12
U.S. BUREAU OPF MINES, 1962-1980, MINERAL INDUSTRIES OF
CALIFORNIA: VOL. II, AREA REPORTS, DOMESTIC
WEIBELT,F.J. AND M.CLAIR SMITH, 1959, A RECONNAISSANCE OF
ASBESTOS DEPOSITS IN THE SERPENTINE BELT OF NORTHERN
CALFIRONIA: U.S. BUREAU OF MINES IC 7860
RICE,SALEM J., 1963, CALIFORNIA ASBESTOS INDUSTRY: CALIF.
DIV. OF MINES AND GEOL., MINERAL INFORMATION SERVICE, VOL.
16, NO. 9
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 16-NOV-93 | Mcmahan | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 06/14/1985 |
|---|---|
| MSHA mine ID | 0402547 |
| Mine name (MSHA) | Calaveras Asbestos Ltd (Pit) |
| Current operator | Calaveras Natural Resources Inc |
| Mine type | Surface (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.