Mine detail: Frazier Mountain

Previously called 'Ventura County Borate AreaOld Columbus MineRussell Borate MineFrazier Mine'

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Location

Lat / long: 34.78329, -119.06763

Resource(N)

Primary: Boron-Borates
Tertiary: Gypsum-Anhydrite
Discovery year: 1898

Production

Operation type: Unknown
Deposit type: SEDIMENTARY-LACUSTRINE
Production size: Small
Development status: Past Producer
First production started: 1899
Last production ended: 1913

Geology

Structure:EXTENSIVELY FAULTED AND FOLDED SECTION, BORATE-BEARING BEDS DIP STEEPLY TO THE SOUTH.

References

MRDSRL10057
DEP60001096
Reference{Deposit:: GALE, H.S., 1914, BORATE DEPOSITS IN VENTURA COUNTY, CALIFORNIA, IN CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1912: U.S. GEOLOGICAL SURVEY BULLETIN 540, P. 434-456.}{Deposit:: SMITH, G.I., 1985, BORATE DEPOSITS IN UNITED STATES: DISSIMILAR IN FORM, SIMILAR IN GEOLOGIC SETTING, IN BARKER, J.M., AND LEFOND, S.J., 1985, BORATES: ECONOMIC GEOLOGY AND PRODUCTION; PROCEEDINGS OF A SYMPOSIUM HELD ON OCTOBER 24, 1984, AT THE FALL MEETING OF SME-AIME IN DENVER, COLORADO: NEW YORK, SOCIETY OF MINING ENGINEERS OF THE AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC., P. 38-51.}