mineral
Cavansite on matrix
Cavansite, Ca(VO)Si₄O₁₀·4H₂O
AI-generated identification · may be incorrectVivid turquoise-blue, vitreous crystals in radiating clusters on a white matrix, likely zeolite or stilbite. Mohs hardness about 3–4; monoclinic crystal system; specific gravity roughly 2.2–2.3.
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Physical properties
Vivid turquoise-blue, vitreous crystals in radiating clusters on a white matrix, likely zeolite or stilbite. Mohs hardness about 3–4; monoclinic crystal system; specific gravity roughly 2.2–2.3.
Formation & geological history
A rare hydrous calcium vanadium silicate formed in cavities of volcanic rocks, commonly associated with zeolites. Notable deposits formed in the Deccan Traps of India, primarily during Cretaceous–Paleogene volcanism.
Uses & applications
Collected as a striking mineral specimen; too soft and rare for practical industrial use or most jewelry.
Geological facts
Cavansite was first described in 1967 and named for its calcium, vanadium, and silicon content. The finest-known material comes from the Pune region of Maharashtra, India.
Field identification & locations
Identify by its intense blue color and delicate radiating crystal sprays, often on white stilbite. The pictured specimen resembles cavansite, but photo identification alone cannot confirm the species; handle gently because crystals are brittle.
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