USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · Kern County
Kramer Borate Deposit
Unconfirmed Boron-Borates Mixed Underground / Surface
Key facts
- State
- California
- County
- Kern
- Development status
- Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Boron-Borates
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A large B-As-Sb-clay deposit located in secs. 19, 23 & 24, T11N, R8W, SBM, approximately 7 miles (ca. 11 km) NW of Kramer and 4 miles (6.44 km) NW of Boron. The MRDS database stated accuracy for this location is 10 meters. Discovered in 1913 by Dr. …
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 3 shaft symbols
- 1 adit symbol
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- USGS MRDS working type: Surface/Underground
- MRDS work_type documents underground workings: Surface/Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
Source records document both underground and surface mining.
History & operations
Historical record
- Development status: Producer
Operators / organizations
- U.S. Borax (Subsidiary Of Rtz Borax Ltd. Of Rtz Corp. Plc (London) · Historical operator
Commodities & minerals
Reported minerals
- Arsenic
- Bentonite
- Calcite
- Clay
- Feldspar
- Mica
- Realgar
- Stibnite
View all 40 reported minerals
- Arsenic
- Bentonite
- Calcite
- Clay
- Feldspar
- Mica
- Realgar
- Stibnite
- Sulfur
- Borax
- Colemanite
- Kernite
- Tincalconite
- Albite
- Analcime
- Anorthite
- Apatite
- Aragonite
- Arsenolite
- Augite
- Baryte
- Barytocalcite
- Bentonite
- Berthierite
- Biotite
- Birnessite
- Borax
- Calcite
- Carbonate-rich Apatite
- Chert
- Chlorite Group
- Clay minerals
- Clinoptilolite Subgroup
- Colemanite
- commodity:Antimony
- commodity:Arsenic
- commodity:Boron
- Copiapite
- Dolomite
- Epidote
Access & recent conditions
- Land
- unknown
Community reports
No community field reports yet.
I Visited This MineSources & evidence
USGS Historical Topographic Mine Features
Type: Historical mapped physical features
Dataset: DOI 10.5066/P9TAALR6
Supports:
- mapped shaft symbols (3)
- mapped adit symbols (1)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 80184
Supports:
- locality identity
- reported minerals (27)
A Mindat locality match does not by itself establish underground workings.
Related underground mines
Slosser Shaft
California · Kern County
Mindat Confirmed Boron-Borates Past Producer
Documented shaft evidence
Baker Mine and Mill
California · Kern County
Unconfirmed Boron-Borates Past Producer
Documented shaft evidence
Suckow Discovery Well and Shaft
California · Kern County
Mindat Confirmed Boron-Borates Past Producer
Documented shaft evidence
Mudd Mine
California · Kern County
Unconfirmed Boron-Borates Past Producer
Documented shaft evidence