Kernite

Kernite, also known as rasorite is a hydrated sodium borate hydroxide mineral with formula Na2B4O6(OH)2·3H2O. It is a colorless to white mineral crystallizing in the monoclinic crystal system typically occurring as prismatic to acicular crystals or granular masses. It is relatively soft with Mohs hardness of 2.5 to 3 and light with a specific gravity of 1.91. It exhibits perfect cleavage and a brittle fracture. Kernite is used to produce borax which can be used in a variety of soaps.
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Noun
1. a light soft mineral consisting of hydrated sodium borate in crystalline form; an important source of boron
(hypernym) mineral
(substance-meronym) boron, B, atomic number 5

General Information:
 Chemical Formula:
Na2B4O6(OH)2·3(H2O)
 Composition:
(Molecular Weight = 290.28 gm)
Sodium 15.84 % Na
Boron 14.90 % B 
Hydrogen 3.13 % H 
Oxygen 66.14 % O 
 Empirical Formula:
Na2(B)4O6(OH)3·3(H2O)
 Environment:
Continental sedimentary basins.
 Locality:
Boron, Kern County, California, the county that contains the fabulous borate deposits at Kramer.
 Name Origin:
Named after it's locality.
Physical Properties:
 Cleavage:
[100] Perfect, [001] Perfect, [201] Good
 Color:
colorless or white.
 Density:
1.9 - 1.92, Average = 1.91
 Diaphaniety:
Transparent to translucent
 Habits:
Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Acicular - Occurs as needle-like crystals., Massive - Uniformly indistinguishable crystals forming large masses.
 Hardness:
2.5-3 - Finger Nail-Calcite
 Luminescence:
None.
 Luster:
Vitreous - Pearly
 Streak:
white
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kernite
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