Calamine is an ore of :
- Aluminium
- Copper
- Iron
- Zinc
The Correct Option is D
Solution and Explanation
Calamine is \(ZnCO _{3}\).
Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated, and sold at a profit.
Types of Zinc Ore
Zinc ore occurs in two types of deposits:
- Primary zinc ore: Primary zinc ore in thin veins is known as rakes.
- Secondary zinc ore: Secondary deposit is formed by weathering of the primary mineral veins.
- Zinc ore is most commonly found as zinc carbonate (ZnCO3), known as calamine or smithsonite.
- It generally occurs as rounded, crystalline crusts or granular, honeycombed masses that have a vitreous or pearly luster and are brown or grey in color.
- It was known as ‘dry bone’ ore, having a cellular to spongy appearance reminiscent of dry bone.
- It is derived from the alteration of the primary zinc sulfide (ZnS) mineral sphalerite.
- This is generally a dark grey or black, highly lustrous mineral, but can vary in appearance. Both occur on Mendip.
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal