wurtzite

Wurtzite is a zinc and iron sulfide mineral with the chemical formula , a less frequently encountered structural polymorph form of sphalerite. The iron content is variable up to eight percent. It is trimorphous with matraite and sphalerite.

Key facts

Mineral.class: Dihexagonal pyramidal (6mm) H-M symbol: (6mm)
Mineral.symmetry: P63mc
Mineral.color: Brownish black, orange brown, reddish brown, black
Mineral.habit: Radial clusters and colloform crusts and masses. Also as tabular crystals
Mineral.cleavage: [110] and [0001]
Mineral.fracture: Uneven – irregular
Mineral.mohs: 3.5–4
Mineral.luster: Resinous, brilliant submetallic on crystal faces
Mineral.refractive: nω = 2.356 nε = 2.378
Mineral.opticalprop: Uniaxial (+)
Mineral.birefringence: δ = 0.022
Mineral.streak: light brown
Mineral.gravity: 4.09 measured, 4.10 calculated
Mineral.diaphaneity: Translucent
Mineral.other: Nonmagnetic, non-radioactive
Mineral.SMILES: [ZnH2-2]1[S+2]47[ZnH-2]2[S+2][ZnH-2]3[S+2]8([ZnH2-2][SH+2]([ZnH2-2]4)[ZnH2-2]6)[ZnH-2]4[S+2][ZnH-2]5[S+2]6([ZnH2-2]6)[Zn-2]78[S+2]78[ZnH-2]([SH+2]69)[SH+2]5[ZnH2-2][SH+2]4[ZnH-2]7[SH+2]3[ZnH2-2][SH+2]2[ZnH-2]8[SH+2]1[ZnH2-2]9
Mineral.Jmol: [ZnH2-2]1[SH+2]([ZnH2-2]6)[ZnH2-2][SH+2]7[ZnH-2]2[S+2][Zn-2]3([S+2][ZnH-2]9[S+2]5)[S+2]18[Zn-2]45[S+2][ZnH-2]5[SH+2]6[Zn-2]78[S+2]78[ZnH2-2][SH+2]5[ZnH2-2][S+2]4([ZnH2-2][SH+2]9[ZnH2-2]4)[ZnH-2]7[S+2]34[ZnH2-2][SH+2]2[ZnH2-2]8
Mineral.name: Wurtzite

via Wikipedia infobox

Wikidata facts

Image: Wurtzite6779.jpg

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Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 2.CB.45
chemical formula: ZnS
Nickel-Strunz 9th edition (updated 2009): 2.CB.45
Commons category: Wurtzite
IMA Mineral Symbol: Wur
Strunz 8th edition (series ID, updated): II/B.06

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Contents

Structure
See also
References
External links

It occurs in hydrothermal deposits associated with sphalerite, pyrite, chalcopyrite, barite and marcasite. It also occurs in low-temperature clay-ironstone concretions.