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Jenifer Mine (Jennifer Mine), U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; Boron open pit; U.S. Borax and Chemical Corporation Mine; Kramer Mine; Kramer pit; Baker Mine), Kramer Borate deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA

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Key
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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 35° 2' 39'' North , 117° 41' 39'' West (est.)
Margin of Error:~0km
Locality type:Mine
Köppen climate type:BWk : Cold desert climate


The Jenifer Mine is an old defunct underground B (Borates) workings located in sec. 23, T11N, R8W, SBM, about a mile from the main Baker Mine on the grounds of the U.S. Borax Mine. This locality was subhumed by the subsequent opening of the open pit mine.

NOTE: American Mineralogist uses the spelling "Jenifer Mine" in their published articles.

Local rocks include Quaternary alluvium and marine deposits.

Workings include underground openings.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


7 valid minerals.

Detailed Mineral List:

Borax
Formula: Na2(B4O5)(OH)4 · 8H2O
Reference: Am Min (1958) 43:169-170
'commodity:Boron'
Formula: B
Reference: From USGS MRDS database
Inderite
Formula: MgB3O3(OH)5 · 5H2O
Description: Occurs in the hanging wall of the main Na-borate ore body, in a thin, discontinuous zone 1 to 2 feet (0.3 to 0.6 meter) thick.
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 227-228.
Kurnakovite
Formula: MgB3O3(OH)5 · 5H2O
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 227-228.
Realgar
Formula: As4S4
Reference: Am Min (1958) 43:169-170
Tincalconite
Formula: Na2(B4O7) · 5H2O
Reference: Am Min (1958) 43:169-170
Tunellite
Formula: SrB6O9(OH)2 · 3H2O
Description: Found in a ventilation shaft.
Reference: Erd, R.C., V. Morgan & J.R. Clark (1961), Tunellite, a new hydrous strontium borate from the Kramer borate district, California: USGS PP 424-C, article No. 255: C294-C297; Clark, Joan R. (1963), Boron-oxygen polyion in the crystal structure of tunellite: Science: 141: 1178; Clark, Joan R. (1964), The crystal structure of tunellite, SrB6O9(OH)2-3H2O: American Mineralogist: 49: 1549-1568.
Ulexite
Formula: NaCa[B5O6(OH)6] · 5H2O
Reference: Am Min (1958) 43:169-170

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Realgar'2.FA.15aAs4S4
Group 6 - Borates
'Borax'6.DA.10Na2(B4O5)(OH)4 · 8H2O
'Inderite'6.CA.15MgB3O3(OH)5 · 5H2O
'Kurnakovite'6.CA.20MgB3O3(OH)5 · 5H2O
'Tincalconite'6.DA.15Na2(B4O7) · 5H2O
'Tunellite'6.FC.05SrB6O9(OH)2 · 3H2O
'Ulexite'6.EA.25NaCa[B5O6(OH)6] · 5H2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Realgar2.8.21.1As4S4
Group 26 - HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
Triborates
Inderite26.3.1.3MgB3O3(OH)5 · 5H2O
Kurnakovite26.3.3.1MgB3O3(OH)5 · 5H2O
Tetraborates
Borax26.4.1.1Na2(B4O5)(OH)4 · 8H2O
Tincalconite26.4.2.1Na2(B4O7) · 5H2O
Pentaborates
Ulexite26.5.11.1NaCa[B5O6(OH)6] · 5H2O
Hexaborates
Tunellite26.6.6.2SrB6O9(OH)2 · 3H2O

List of minerals for each chemical element

HHydrogen
H BoraxNa2(B4O5)(OH)4 · 8H2O
H InderiteMgB3O3(OH)5 · 5H2O
H KurnakoviteMgB3O3(OH)5 · 5H2O
H TincalconiteNa2(B4O7) · 5H2O
H TunelliteSrB6O9(OH)2 · 3H2O
H UlexiteNaCa[B5O6(OH)6] · 5H2O
BBoron
B BoraxNa2(B4O5)(OH)4 · 8H2O
B InderiteMgB3O3(OH)5 · 5H2O
B KurnakoviteMgB3O3(OH)5 · 5H2O
B TincalconiteNa2(B4O7) · 5H2O
B TunelliteSrB6O9(OH)2 · 3H2O
B UlexiteNaCa[B5O6(OH)6] · 5H2O
OOxygen
O BoraxNa2(B4O5)(OH)4 · 8H2O
O InderiteMgB3O3(OH)5 · 5H2O
O KurnakoviteMgB3O3(OH)5 · 5H2O
O TincalconiteNa2(B4O7) · 5H2O
O TunelliteSrB6O9(OH)2 · 3H2O
O UlexiteNaCa[B5O6(OH)6] · 5H2O
NaSodium
Na BoraxNa2(B4O5)(OH)4 · 8H2O
Na TincalconiteNa2(B4O7) · 5H2O
Na UlexiteNaCa[B5O6(OH)6] · 5H2O
MgMagnesium
Mg InderiteMgB3O3(OH)5 · 5H2O
Mg KurnakoviteMgB3O3(OH)5 · 5H2O
SSulfur
S RealgarAs4S4
CaCalcium
Ca UlexiteNaCa[B5O6(OH)6] · 5H2O
AsArsenic
As RealgarAs4S4
SrStrontium
Sr TunelliteSrB6O9(OH)2 · 3H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
American Mineralogist (1958): 43: 169-170.
Erd, R.C., V. Morgan & J.R. Clark (1961), Tunellite, a new hydrous strontium borate from the Kramer borate district, California: USGS PP 424-C, article No. 255: C294-C297.
Troxel, Bennie Wyatt & P.K. Morton (1962), Mines and mineral resources of Kern County, California: California Division Mines & Geology County Report 1, 370 pp.: 63-64.
Clark, Joan R. (1963), Boron-oxygen polyion in the crystal structure of tunellite: Science: 141: 1178.
Clark, Joan R. (1964), The crystal structure of tunellite, SrB6O9(OH)2-3H2O: American Mineralogist: 49: 1549-1568.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 227-228, 375.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 255.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10284795.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060291051.


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