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# In earth's crust, tin occurs as______

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## Tin in earth's crust:-$\mathrm{Sn}$(Stanum) or commonly known as Tin, is obtained primarily from the mineral ${\mathrm{SnO}}_{2}$(Cassiterite).Cassiterite is colorless in a pure state, but when impurities like iron are present in it, it becomes brown or black in color.The concentration of tin is about $0.001%$ of the Earth’s crust.Grey tin slowly transforms into the white tin at temperatures above $13.2°\mathrm{C}$.Therefore, in the earth's crust, tin occurs as Cassiterite(${\mathrm{SnO}}_{2}$)

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