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A mineral, ZnCO3, sometimes used as a source of zinc.

[After James Smithson.]
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 zinc carbonate in hexagonal crystalline form: occurs chiefly in dry limestone regions and is a source of zinc. Formula: ZnCO3. Also called (US): calamine
[C19: named after James Smithson]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsmɪθ səˌnaɪt)

a mineral, zinc carbonate, ZnCO3, found in crusts and masses: an ore of zinc.
[1825–35; after J. Smithson, who distinguished it from calamine; see -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The industry includes establishments developing mine sites, mining and preparing lead ores including smithsonite mining, sphalerite mining, willemite mining, calamine mining, cerussite mining, galena mining, lead ore mining, and lead-zinc ore mining.
The V2O5 can be collected in a flotation concentrate together with Smithsonite (ZnCO3) and Cerussite (PbCO3).
Wen, "Formation of zinc sulfide species on smithsonite surfaces and its response to flotation performance," Journal of Alloys and Compounds, vol.
The diffractogram for ZnC[O.sub.3] sample (Figure 1(d)) corresponds to smithsonite phase (JCPDS-ICDD 08-0449).
Supergene stage in the Zhaxikang deposit consists of ferrihydrite, smithsonite, sardinianite, valentinite, travertine, malachite, and siliceous sinter (Figures 4(u) and 4(v)).
The vast collection of minerals--smooth turquoise smithsonite from New Mexico, spiky orange crocoite from Tasmania, dazzling purple amethyst from Uruguay, and large specimens of sulfur from Sicily--are recommended for a viewing at the Harvard Museum of Natural History.
According to Lindsay (1979), minerals like ZnO (zincite) and ZnC[O.sub.3] (smithsonite) are too soluble to persist in soils.
Also, newly formed products such as hydrozincite ([Zn.sup.5][(C[O.sub.3]).sub.2][(OH).sub.6]), smithsonite (ZnCO3), and zinc sulfide (ZnS) are possible in the presence of an appropriate concentration of carbonate and sulfide and under suitable pH conditions [19-23].
Sarac, Dissolution Kinetics of Smithsonite Ore as an Alternative Zinc Source with an Organic Leach Reagent, JTICE, 40, 6 (2009).
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.
Fe) S, and to a lesser extent smithsonite (ZnO3), willemite (Zn2SiO4), and zincite (ZnO) (Reimann and deCaritat, 1998).

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