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0 item @ $0.00  

Hurlbutite with Montgomeryite

#59291

Hurlbutite with Montgomeryite

#59291
Availability
Sold
Size
2.5 x 2.5 x 2 cm - Thumbnail 
Formula
4.5 (RRUFF)
Locality
Tip Top mine, Custer Co., South Dakota, United States
Tagged
beryllium , pegmatite mineral

Tiny round Hurlbutite crystals to 1mm associated with clusters of red Montgomeryite, dark red Roscherite, and black Robertsite on Beryl matrix.

Hurlbutite

Formula
CaBe2P2O8 
Crystal System
Monoclinic 
Crystal Habit
Prismatic 
Cleavage
None, None, None 
Luster
Vitreous - Greasy 
Color
colorless, greenish white, yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness

Data courtesy of Webmineral.

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