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Rocks and Minerals ➔ Witherite and Alstonite

Identifier:
2019.1.180
Description:
Witherite is a carbonate mineral that varies in color. This specimen is white and was found in Northumberland, England. It also contains alstonite, a double carbonate of calcium and barium. It was sold by George L. English & Company of New York. 

Witherite Formula: BaCO3
Alstonite Formula BaCa(CO3)2
Date:
circa 1888 – 1898
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