Zinc Sulfide - Structure

Structure

ZnS exists in two main crystalline forms, and this dualism is often a salient example of polymorphism. In both polymorphism, the coordination geometry at Zn and S are tetrahedral. The more stable cubic form is known also as zinc blende or sphalerite. The hexagonal form is known as the mineral wurtzite, although it also can be produced synthetically. The transition from the sphalerite form to the wurtzite form occurs at around 1020 celsius. A tetragonal form is also known as the very rare mineral called polhemusite, with the formula (Zn,Hg)S.

Read more about this topic:  Zinc Sulfide

Famous quotes containing the word structure:

    In the extent and proper structure of the Union, therefore, we behold a republican remedy for the diseases most incident to republican government.
    James Madison (1751–1836)

    The syntactic component of a grammar must specify, for each sentence, a deep structure that determines its semantic interpretation and a surface structure that determines its phonetic interpretation.
    Noam Chomsky (b. 1928)

    A special feature of the structure of our book is the monstrous but perfectly organic part that eavesdropping plays in it.
    Vladimir Nabokov (1899–1977)