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Name: |
cavansite |
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Class: |
Silicates |
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Chemistry: |
Ca(VO)(Si4O10) - 4 H2O hydrated calcium vanadium silicate |
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Color(s): |
Blue (sometimes greenish but usually bright blue), Streak:blue |
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Hardness: |
3 - 4 |
SpecGrav: |
2.3 - 2.4 |
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Fracture: |
conchoidal |
Cleavage: |
perfect in one direction |
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Crystal: |
Orthorhombic (usually in radiating spherical clusters) |
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Envronment: |
usually formed in pockets in volcanic basalts |
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Association: |
stilbite, heulandite, apophyllite and other zeolites |
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Locals: |
| Poona/India | Oregon/USA | |
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Misc: |
Named after its composition of calcium, vanadium, and silicon. |
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Photos |
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