M MineralystRock & Mineral Guide
Mineral

Leucite

Leucite — reference photo

Leucite is a mineral with the chemical formula KAlSi2O6. It has a Mohs hardness of 5.5 - 6 and vitreous luster.

Leucite properties

TypeMineral
Chemical formulaKAlSi2O6
Mohs hardness5.5 - 6
LusterVitreous
Typical colorsColorless, white, gray, yellow, green, or brown
FormationForms in volcanic rocks, particularly in alkali-rich lavas
Rarity6 / 10

Mohs hardness 5.5–6 — fairly hard

1 · Talc5 · Apatite10 · Diamond
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