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.
Rarely, small pyromorphite crystals are seen embedded in crusts of blue botryoidal hemimorphite and very rarely pyromorphite is found associated with small rounded mottramite crystals.
The new hemimorphite, calcite and linarite all come from the Galeh Zari mine.
Thousands of rejas of adamite, hemimorphite, aurichalcite, calcite, etc., known in the trade as "Mapimi mix," were produced.
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.
For exciting examples, see below under California and Venezuela gold; California ferro-axinite; Thetford Mines, Quebec andradite; Ojuela mine, Mexico mimetite and hemimorphite; Peruvian rhodonite; Madagascar liddicoatite; Kazakhstan copper; Pakistan anatase and brookite; and many more.
Less familiar-looking specimens represent the best extant crystallized Bisbee brochantite, atacamite, cerussite, hemimorphite, and many rare species, including some extremely rare ones which accompany cuprite, a species which I have saved for last in this listing because it is the star player in the account of the Graemes' greatest single collecting adventure at Bisbee.
Finally there was the strike of sleek, lustrous hemimorphite in translucent white fan-shaped aggregates to 8 cm, rising from the calcite-limonite matrix.