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

[After James Smithson.]


(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]


(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]
References in periodicals archive ?
Were it not for an unusual clause in his will bequeathing his entire fortune for the creation, in the United States of America, of a foundation to 'further the increase and diffusion of knowledge' then we would know him only for the mineral named in his honour, Smithsonite, and for coining the term 'silicate'.
Which metal is obtained from calamine or smithsonite ore?
6]} and smithsonite (ZnCO3) which passivate the zinc surface; that is, these oxidized species protect the metal from further corrosion.
The tablets were mainly made of the zinc carbonates hydrozincite and smithsonite, echoing the widespread use of zinc-based minerals in today's eye and skin medications.
The zinc mineralization is composed of hemimorphite and lesser smithsonite and forms a tabular body hosted mostly within the upper dolomite along the east-west trending Sierra Mojada fault.
3]), other minerals are; otavite, smithsonite, siderite, magnesite, rhodochrosite, vaterite etc [2].
What do malachite, smithsonite, rhodochrosite and hermatite have in common?

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