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Dominant species
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Kernite
Chemical
Formula
Na2B4O6(OH)2·3(H2O)
Species
Borates
Crystal
System
Monoclinic
Mohs
Scale
2
Specific
Gravity
1.9-1.92
Color
Colorless, white
Streak
white
Luster
Vitreous
Refractive
Index
n = 1.454 n = 1.472 n = 1.488
Diaphaneity
Transparent
Cleavage
PerfectOn perfect; less perfect; on fair. NOTE: The cleavable masses exhibit a simulated fibrous structure due to development of excellent cleavages. Cleavage fragments usually bent or warped around .
Fracture
Splintery
Crystal Habit:Crystalline - occurs as well-formed coarse sized crystals
Geological Setting:Sedimentary borate deposits.
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