Natural Indian Minerals
Zinc Ore

Name and Composition - Zinc : Sphalerite (Zinc blende) : ZnS.

Physical Properties - Zinc Ore (sphalerite): Generally occurs as brown coloured tetrahedral or dodecahedral crystals, massive and compact form with resinous to adamantine lusture. Streak is white to reddish brown, sp.gr. 3.9 to 4.0.

Mode of Occurrence - Syn–sedimentary deposits. Mineralization genially occurs as en-echelon shoots/lodes in dolomite, quartz-chlorite-biotite schist, augen gneisses etc.

Uses - Zinc metal is used in electroplating (galvanization), handicrafts, zinc foil, dry batteries, alloy metals etc. Zinc is most commonly used as an anti-corrosion agent, galvanization (coating of iron or steel) is the most familiar form. A widely used zinc alloy is brass, in which copper is alloyed with anywhere from 3% to 45% zinc, depending upon the type of brass.

Mineral based Industries – Zinc smelter, recycling units of Pb-zn.

Industrial Prospects – Handicrafts, storage battery, dry battery, zinc foil, galvansing industries etc.


Physical Properties
Hardness
Sp. gr.
Melting point
Boiling point
Density
3.5 to 3.9
3.9 to 4.0
419.53 °C
907 °C
7.14 g/cm3
Chemical Properties
Oxidation states
Electronegativity
Atomic number
-2, 0, +1, +2 ​
Pauling scale: 1.65
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