Garronite-Ca

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

Occurs in Pinal County.

Chemical Formula: NaCa₂[Al₅Si₁₀O₃₂]·13H₂O

Specific Gravity: 2.2-2.25

Luster: Vitreous to silky

Hardness: 4.5-5

Garronite-Ca is a hydrated sodium calcium aluminum silicate mineral that forms as white to colorless fibrous masses. It is a zeolite mineral.

Next Pinal County mineral: Georgerobinsonite