Wurtzite

Wurtzite is a mineral. It is mostly made of zinc sulfide with small amounts of iron, and has the chemical formula .mw-parser-output .template-chem2-su{display:i

Wurtzite
Wurtzite crystals showing its hexagonal structure.
This article is about the mineral. For the crystal structure named for it, see wurtzite crystal structure.

Wurtzite is a mineral. It is mostly made of zinc sulfide with small amounts of iron, and has the chemical formula (Zn,Fe)S. It is a structural polymorph of the more common mineral sphalerite. It is generally more stable than sphalerite at high temperatures, with sphalerite changing to wurtzite at 1,020 °C (1,870 °F; 1,290 K).[1]

Structure

Unit cell of a wurtzite crystal, showing tetrahedral molecular geometry at both zinc and sulfur.

Wurtzite gives its name to the wurtzite crystal structure. Both the zinc and sulfur atoms form hexagonal close-packed lattices, with the atoms of the other element filling half of the tetrahedral interstitial sites.

References

  1. ↑ Ramavath, P.; Biswas, P.; Kumar, R.S.; Mahendar, V.; Rao, G.V.N.; Hareesh, U.S.; Johnson, R.; Prasad, N.E. (2011). "Effect of sphalerite to wurtzite crystallographic transformation on microstructure, optical and mechanical properties of zinc sulphide ceramics". Ceramics International. 37 (3): 1039–1046. doi:10.1016/j.ceramint.2010.11.032.


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