| Na2SO4
This sample of thenardite is displayed in the Smithsonian Museum of Natural History. Thenardite is an sulfate mineral of sodium with the composition Na2SO4. This sample is about 8x8 cm and is from Soda Lake, San Luis Obispo County, California. Thenardite is named after Louis Jacques Thenard (1777-1857), Professor of Chemistry, University of Paris (France).
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