Mordenite

by Pinal Geology Museum
August 9, 2023August 9, 2023

Occurs in Pinal County.

Chemical Formula: (Na₂,Ca,K₂)Al₂Si₁₀O₂₄·7H₂O

Specific Gravity: 2.1-2.2

Luster: Vitreous to pearly

Hardness: 4.5-5

Mordenite is a hydrated sodium calcium potassium aluminum silicate mineral that forms as white to colorless fibrous masses. It is a type of zeolite mineral.

Next Pinal County mineral: Mottramite