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A usually white or colorless mineral, essentially Zn4Si2O7(OH)2·H2O, an important ore of zinc. Also called calamine.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) a white mineral consisting of hydrated zinc silicate in orthorhombic crystalline form: a common ore of zinc. Formula: Zn4Si2O7(OH)2.H2O. Also called (US): calamine
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hemimorphite - a white mineral; a common ore of zinc
calamine lotion - a lotion consisting of a liquid preparation containing calamine; used to treat itching or mild skin irritations
atomic number 48, cadmium, Cd - a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The common secondary zinc minerals are smithsonite (ZnC[O.sub.3]), zincite (ZnO), hydrozincite [Z[n.sub.5][(OH).sub.6][(C[O.sub.3]).sub.2], willemite (Z[n.sub.2]Si[O.sub.4]) and hemimorphite [Z[n.sub.4]S[i.sub.2][O.sub.7] [(OH).sub.2] [H.sub.2]O] also known as calamine.
The collection is now retailing on their website and includes some rare varieties of Jasper, Hemimorphite and Lepidolite gemstones in beautiful swirls of colors, grain and cuts.
Also in the flat were specimens of hemimorphite crystals on pale green, opaque fluorapatite, the latter pseudomorphically replacing tarbuttite, an unusual combination.
These, first briefly described by Knopf (1914), included linarite, caledonite, anglesite, wulfenite, hemimorphite and cerussite.
The pyromorphite, plumbogummite, hemimorphite and mimetite from the Caldbeck Fells were, and remain, among the finest the world has ever seen.
Small, tabular anglesite crystals on galena have been found, as well as rare sky-blue to sea-green aurichalcite sprays (Middle level), and nondescript coatings of green malachite and pale brown hemimorphite. Small quartz crystals to 5 mm are sometimes found on the faces of fluorite crystals.
The "silicate of zinc" was probably the beautiful (generally blue!) botryoidal hemimorphite from the Roughton Gill mine in Caldbeck.
Hemimorphite [Zn.sub.4][(OH).sub.2][Si.sub.2][O.sub.7] * [H.sub.2]O
Smithsonite with Hemimorphite The San Antonio Mine Santa Eulalia, Chihuahua, Mexico, 3" tall ex-collection Irv Brown