12 Photos
Zunyite
Chemical Formula	Al13Si5O20(OH,F)18Cl
Species	Silicates
Mohs Scale	7
Specific Gravity	2.87-2.90
Color	Grayish white, flesh-red; colorless in thin section
Streak	White
Luster	Vitreous
Refractive Index	n = 1.592 - 1.600
Diaphaneity	Transparent, Translucent
Cleavage	Good on
Fracture	Uneven
Crystal Habit：Crystalline - occurs as well-formed fine sized crystals

Zunyite is a sorosilicate mineral, Al₁₃Si₅O₂₀(OH,F)₁₈Cl, composed of aluminium, silicon, hydrogen, chlorine, oxygen, and fluorine.

Occurrence

Zunyite occurs in highly aluminous shales and hydrothermally altered volcanic rocks. It occurs in association with pyrophyllite, kaolinite, alunite, diaspore, rutile, pyrite, hematite and quartz.

It was discovered in 1884, and named for its discovery site, the Zuni mine in the Silverton District, San Juan County, Colorado.