hemimorphite


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hemimorphite

[‚he·mē′mȯr‚fīt]
(mineralogy)
Zn4Si2O7(OH)2·H2O A white, colorless, pale-green, blue, or yellow mineral having an orthorhombic crystal structure; an ore of zinc. Also known as calamine; electric calamine; galmei.
References in periodicals archive ?
It has also been found in float with minute white sprays of pyromorphite, hemimorphite and chrysocolla after malachite.
There were only two hemimorphite specimens on hand in Munich, but they are very fine: respectively 15 and 18 cm across, with lustrous white, Ojuela-like crystal sheaves to 2.
The world's best specimens of paradamite and kottigite/parasymplesite have also been found there, as well as superb specimens of aurichalcite, scorodite, hemimorphite, rosasite, wulfenite and other minerals.
Excellent crystals of other minerals have also been found: uvite, pyrite, fluorapatite, andradite, spinel, augite, and hemimorphite, to name just a few.
In 2002 the dumps at Ightem, besides having given up many specimens of arsenate minerals, gave up the first known specimens of hemimorphite from the district.
In the same (unspecified) area of the Ojuela mine, at about the same time, hundreds of very beautiful hemimorphite specimens were found, these consisting of sprays to more than 2 cm of lustrous white, bladed crystals rising from matrix, with tiny bright yellow spheres of mimetite around their bases.