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0 item @ $0.00  

Straczekite

#DO53042

Straczekite

#DO53042
Availability
Sold
Size
5 x 4 x 3 cm - Miniature 
Formula
(Ca,K,Ba)V8O20·3H2O (RRUFF)
Locality
Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
Tagged
vanadium

No, this is not a phosphate! Sorry. Straczekite is a rare black mineral with vanadium and these are exceptional crystals. They are platy and occur in curled-up groups to around 1mm.

Straczekite

Formula
(Ca,K,Ba)V8O20·3H2
Crystal System
Monoclinic 
Crystal Habit
Microscopic Crystals, Fibrous 
Cleavage
Perfect, None, None 
Luster
Greasy (Oily) 
Color
greenish black 
Streak
greenish black 
Class
Monoclinic - Prismatic 
Hardness
1-2 

Data courtesy of Webmineral.

Collection
Don Owens Collection

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