fraipontite

Also known as zinalsite

Fraipontite is a zinc aluminium silicate mineral with a formula of .

Key facts

Mineral.name: Fraipontite
Mineral.image: Fraipontite-sea52a.jpg
Mineral.imagesize: 260px
Mineral.caption: Pockets of minute pearly white fraipontite crystals with green smithsonite from Laurium, Greece (size: 1.4 x 1.0 x 0.9 cm)
Mineral.category: Phyllosilicate minerals
Mineral.group: Kaolinite-Serpentine group, serpentine subgroup
Mineral.IMAsymbol: Fpt
Mineral.strunz: 9.ED.15
Mineral.system: Monoclinic
Mineral.class: Domatic (m) (same H-M symbol)
Mineral.symmetry: Cm
Mineral.unit cell: a = 5.34, b = 9.21 c = 14.12 [Å]; β = 93.2°; Z = 2

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Fraipontite is a zinc aluminium silicate mineral with a formula of .

It is a member of the kaolinite-serpentine mineral group and occurs as an oxidation product of zinc deposits. It occurs with smithsonite, gebhardite, willemite, cerussite and sauconite.