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1 item @ $125.00  

Offretite on Levyne

#AH56240

Offretite on Levyne

#AH56240
Availability
Sold
Size
7.5 x 7 x 6 cm - Sm Cabinet 
Formula
KCaMg(Si13Al5)O36·15H2O (RRUFF)
Locality
Adel, Lake Co., Oregon, United States

Fine tabular and hexagonal crystals, shaped liked disc and sandwiches reaching about 2mm. There are several vugs lined with Offretite. Excellent specimen.

Offretite

Formula
KCaMg(Si13Al5)O36·15H2
Crystal System
Hexagonal 
Crystal Habit
Hexagonal, Prismatic, Radial 
Cleavage
Distinct, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Hexagonal - Ditrigonal Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
4-4.5 

Data courtesy of Webmineral.

Collection
Arnold G Hampson Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Offretite
On Dakota Matrix
Other Available Offretite
WebMineral
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Mindat
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