ZINCITE , a
See also:mineral consisting of
See also:oxide (ZnO), crystallizing in the
See also:hemimorphic-hemihedral class of the
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:colour and the 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 Sterling
See also:Hill and
See also:Furnace in
See also:county, New 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 .
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