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Ulexite Colemanite

#PD30652
SOLD
Ulexite from Boron, Kern Co., California, United States - PD30652
Ulexite from Boron, Kern Co., California, United States - PD30652

Ulexite Colemanite

#PD30652
Availability
Sold
Size
10 x 6 x 6 cm - Cabinet 
Formula
NaCaB5O6(OH)6·5H2O (RRUFF)
Locality
Boron, Kern Co., California, United States
Tagged
Ore Minerals

An excellent specimen showing the fibrous nature of Ulexite used in fiber optics. Also called "TV rock" Ulexite as the remarkable property of transferring light through its fibers by the refraction of light even when bent.

Ulexite

Formula
NaCaB5O6(OH)6·5H2O 
Crystal System
Triclinic 
Crystal Habit
Acicular, Fibrous, Capillary 
Cleavage
Perfect, Perfect, None 
Luster
Chatoyant 
Color
colorless, white 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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Previously Sold Ulexite
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Other Available Ulexite
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Mindat
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