Sylvite (#9) main content.

Sylvite (#9)

Part of Hall of Minerals.

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This specimen is an example of an alkali mineral that formed in an evaporite environment.

Evaporite: Alkalic Collection
Best known among several kinds of evaporite mineral deposits are the alkali minerals and the borate minerals.

In the alkali lake, there develops a particularly high concentration of sodium, carbonate, calcium, and sulphate, together with chlorine, magnesium, potassium, and other highly soluble elements. As the lak