mineral
Cavansite on matrix
Cavansite, Ca(VO)Si₄O₁₀·4H₂O, on likely stilbite or another zeolite matrix
AI-generated identification · may be incorrectVivid turquoise-blue, vitreous crystals in radiating clusters on a white matrix; cavansite is Mohs 3–4, orthorhombic, with perfect cleavage. Vanadium gives its distinctive blue color.
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Physical properties
Vivid turquoise-blue, vitreous crystals in radiating clusters on a white matrix; cavansite is Mohs 3–4, orthorhombic, with perfect cleavage. Vanadium gives its distinctive blue color.
Formation & geological history
Forms as a rare secondary mineral in cavities of altered basalt, commonly alongside zeolites; it crystallized during low-temperature hydrothermal alteration, generally in geologically young volcanic rocks.
Uses & applications
Collected as a striking mineral specimen; too soft and scarce for ordinary jewelry or industrial use.
Geological facts
Cavansite was first described in 1967 and its name combines calcium, vanadium, and silicon, its principal elements.
Field identification & locations
The bright blue radiating sprays on a pale zeolite matrix are characteristic. Notable specimens come from the Wagholi quarries near Pune, India; handle gently because crystals are fragile.
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