Definition of bassanite
: a mineral CaSO4‧1⁄2H2O consisting of calcium sulfate found in white opaque crystals in blocks ejected from Vesuvius in 1906 (specific gravity 2.69–2.76) — compare plaster of paris
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Origin and Etymology of bassanite
Italian, from Francesco Bassani, 20th century Italian geologist + Italian -ite
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