Tunellite

SrB6O9(OH)2.3H2O

This sample of tunellite is displayed in the Smithsonian Museum of Natural History. Tunellite is an oxide mineral of strontium and boron. It has the composition SrB6O9(OH)2.3H2O. This sample is about 4x6 cm and is from Boron, California. It is described as tunellite with ulexite.

Mindat: Tunellite

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