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ZINCITE

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Originally appearing in Volume V28, Page 985 of the 1911 Encyclopedia Britannica.
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ZINCITE , a See also:

mineral consisting of See also:zinc See also:oxide (ZnO), crystallizing in the See also:hemimorphic-hemihedral class of the See also:rhombohedral See also:system. Distinct crystals are of rare occurrence; they have the See also:form of a hexagonal See also:pyramid terminated at one end only by a basal See also:plane. There is a perfect cleavage parallel to the basal plane, and usually the mineral is found as platy foliated masses. The See also:blood-red See also:colour and the See also:orange-yellow streak are characteristic features. The hardness is 4'i, and the specific gravity is 5.6. Some See also:manganese is usually See also:present replacing zinc. It is found in the zinc mines at See also:Sterling See also:Hill and See also:Franklin See also:Furnace in See also:Sussex See also:county, New See also:Jersey, where it is associated with See also:franklinite and See also:willemite in crystalline See also:limestone, and is See also:mined as an ore of zinc. Artificial crystals of a See also:white or yellowish colour are not infrequently formed by sublimation in zinc furnaces.

End of Article: ZINCITE

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