Hydroboracite

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Hydroboracite, California(?)
Hydroboracite, California(?)

Hydroboracite is a hydrated borate mineral (hence the name), whose chemical composition is CaMgB6O8(OH)6·3(H2O) . It was discovered in 1834 in Atyrau Province, Kazakhstan. Hydroboracite is a minor borate ore mineral.

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