Mineralpedia Details for Straczekite
Straczekite
- Formula
- (Ca,K,Ba)V8O20ยท3H2O
- 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
- WebMineral
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Straczekite from Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
- Special Info
- Type Locality
Straczekite, a very rare barium-vanadium oxide, occurs in only four localities worldwide. This specimen, collected by Don Owens, shows 0.75mm black crystals. Owens was mine geologist at this mine.
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