Cavansite on Stilbite

Cavansite – Ca(V⁴⁺O)(Si₄O₁₀)·4H₂O

Elements: Calcium, Vanadium, Oxygen, Silicon, Hydrogen

Class: Silicates – Phyllosilicates

Crystal System: Orthorhombic

Hardness: 3-4

Fluorite

Talc (1)Diamond (10)

Softer than glass. A steel knife scratches it.

Stilbite-Ca – NaCa₄(Si₂₇Al₉)O₇₂·28H₂O

Elements: Sodium, Calcium, Silicon, Aluminum, Oxygen, Hydrogen

Class: Silicates – Tectosilicates

Crystal System: Monoclinic

Hardness: 3.5-4

Fluorite

Talc (1)Diamond (10)

Softer than glass. A steel knife scratches it.

Origin: Wagholi Quarry, Prune District, Maharashtra – India

More minerals containing Silicon