Outstanding specimen of the very rare sulphate mineral wattevilleite on a black contrasting matrix, from: Fossil Canyon, San Bernardino County, California, United States of America. Wattevilleite is a mineral found in a few localities worldwide. — Photo: David Hospital · CC BY-SA 4.0
Wattevilleite
Wattevilleite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Na₂Ca(SO₄)₂·4H₂O.
It crystallizes in the monoclinic crystal system (space group C2/c).
Key properties: specific gravity 1.81; Silky luster; optically biaxial.
IMA symbol Wtv, IMA status: questionable, named in 1879.
Found in pyritic lignite.
It is found associated with Pyrite, other sulfides.
The mineral was named to honor Oscar de Watteville, Paris, France.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more W minerals or help write this entry.