Kramer District, Kern Co., California, USA

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Birnessite : (Na,Ca)_0.5(Mn⁴⁺,Mn³⁺)₂O₄ · 1.5H₂O
	Boron, Kramer District, Kern Co., California, USA dimension area mm. 4 x 4
© luigi chiappino	Photo ID: 201816 View Count: 55
Borax : Na₂[B₄O₇] · 10H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax crystals. J. Minette collection. Scale at bottom of image is an inch with a rule at one cm. Borax crystals often are found growing in sumps and the bottoms of flooded stopes in the old underground working.
	Photo ID: 237295 View Count: 177
Borax : Na₂[B₄O₇] · 10H₂O
	Boron Pit, Baker mine, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA A 5.3 by 4.6 cms specimen purchased from David Shannon Minerals in 1983. JSS specimen and photograph.
© JSS	Photo ID: 72973 View Count: 746
Borax : Na₂[B₄O₇] · 10H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax. J. Minette collection. Scale at bottom of image is an inch with a rule at one cm. Borax crystals grow in sumps and the bottoms of partially flooded stopes in the old underground workings. Several different habits are found.
	Photo ID: 237301 View Count: 181
Borax : Na₂[B₄O₇] · 10H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax. J. Minette collection. Scale at bottom of image is an inch with a rule at one cm. Borax crystals grow in sumps and in the bottoms of partially flooded stopes in the old underground workings at Boron. Sometimes they grow on old mine timbers and other rubbish. In this specimen you can see that the Borax crystals are growing on a piece of wood.
	Photo ID: 237304 View Count: 129
Borax : Na₂[B₄O₇] · 10H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax. J. Minette collection. Scale at bottom of image is an inch with a rule at one cm. Crystals of borax grow in sumps and the bottom of partially flooded stopes in the old underground workings. Some specimens can be quite large.
	Photo ID: 237303 View Count: 109
Borax : Na₂[B₄O₇] · 10H₂O, Tincalconite : Na₂[B₄O₇] · 5H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax crystal altering to Tincalconite. J. Minette collection. Scale at bottom of image is an inch with a rule at one cm. Borax looses five molecules of water and becomes a white pseudomorph of Tincalconite after Borax. Those who have collected and sold these specimen that are collected in the old underground workings from sumps and the bottoms of ...
	Photo ID: 237299 View Count: 103
Borax : Na₂[B₄O₇] · 10H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax. J. Minette collection. Scale at bottom of image is an inch with a rule at one cm. These crystals grow in sumps and the bottoms of partially flooded stopes in the old underground workings.
	Photo ID: 237300 View Count: 87
Calcite : CaCO₃, Colemanite : Ca[B₃O₄(OH)₃] · H₂O
	U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA An excellent example of botryoidal Calcite with Colemanite from this famous mine. On more than one occasion I have spent entire days breaking open boulders filled with vugs of Calcite hoping to get a specimen like this one. From my experience most of the vugs containing Calcite are just too small to allow a specimen of this size and quality to ...
© Russell G. Rizzo	Photo ID: 97254 View Count: 147
Calcite : CaCO₃, Ulexite : NaCa[B₅O₆(OH)₆] · 5H₂O
	Boron Pit, Baker mine, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA The Boron Open Pit is well known for its "TV rock" ulexite, but specimens with calcite from this location were never common. Here we have a column of fibrous white ulexite with a 2.0 cm cluster of butterscotch calcite crystals at the tip. Collected April 2000 by Steve Hardinger. Field of view about 4 cm.
© Steve Hardinger	Photo ID: 142574 View Count: 100