Bassanite is a sulfate mineral composed of calcium sulfate hemihydrate, with the chemical formula or . It has half a water molecule per CaSO4 unit.
via Wikipedia infobox
{{infobox mineral | name = Bassanite | image = Bassanite-192766.jpg | imagesize = 260px | alt = | caption = White radial-acicular bassanite crystals from Kimba, Eyre Peninsula, South Australia | category = Sulfate mineral | formula = CaSO4·H2O |IMAsymbol=Bss | strunz = 7.CD.45 | dana = | system = Monoclinic | symmetry = C2 (No. 5) | unit cell = a = 12.0317 Å, b = 6.9269 Å, c = 12.6712 Å, β = 90.27°; Z = 12 | color = White | habit = Microscopic acicular crystals in parallel aggregates, pseudohexagonal | twinning = Twin plane {101} | cleavage = | fracture = | tenacity = | mohs = | luster = Earthy | streak = White | diaphaneity = Semitransparent | gravity = 2.69–2.76 | density = | polish = | opticalprop = Biaxial (+) | refractive = nα = 1.550–1.559, nβ = 1.560, nγ = 1.577–1.584 | birefringence = | pleochroism = | 2V = 10–15° | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = Dehydrates on heating to anhydrite | other = | references = }} Bassanite is a sulfate mineral composed of calcium sulfate hemihydrate, with the chemical formula or . It has half a water molecule per CaSO4 unit.
Bassanite was first described in 1910 for an occurrence on Mount Vesuvius. It was named for Italian paleontologist Francesco Bassani (1853–1916).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).