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smithsonite


smithsonite
Smithsonite from Namibia.
Image source: Wikipedia
A white, yellow, or green mineral, formerly known as calamine, consisting of zinc carbonate (ZnCO3). Smithsonite occurs widely, an ore of zinc formed by alteration of other zinc minerals; it has the calcite structure and is named for the British chemist James Smithson (1765–1829), after whom the Smithsonian Institution is also named.


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