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0 item @ $0.00  

Colemanite

#43030

Colemanite

#43030
Availability
Sold
Size
7.5 x 5.5 x 5 cm - Sm Cabinet 
Formula
CaB3O4(OH)3·H2O (RRUFF)
Locality
Boron, Kern Co., California, United States

I like this specimen as the crystals are large and distinct. There is a cluster of the best crystals perched perfectly at the center. The crystals are 9mm each in the cluster alone. The remaining portions of the specimen are equally large and well-defined and there are many smaller to 1mm lining the vugs. 

Fluorescent

Colemanite

Formula
CaB3O4(OH)3·H2
Crystal System
Monoclinic 
Crystal Habit
Blocky, Crystalline - Coarse, Massive - Granular 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
colorless, gray, gray white, yellowish white, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4.5 

Data courtesy of Webmineral.

Collection
Bill McConlogue Collection
Special Info
Fluorescent

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