Inyoite, named after Inyo County, California, where it was discovered in 1914, is a colourless

monoclinic In crystallography, the monoclinic crystal system is one of the seven crystal systems. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal lengths, as in the orthorhombic s ...

mineral. It turns white on dehydration. Its chemical formula is Ca(HBO)(OH)·4HO or CaB₃O₃(OH)₅·4H₂O. Associated minerals include

priceite Priceite is a white borate mineral. The mineral has been found in places such as Chetco, Oregon, Death Valley, and northwestern Turkey. In 1862 small amounts of this mineral were mined from Chetco, Oregon. Priceite is rare and has only been fou ...

, meyerhofferite,

colemanite Colemanite (Ca2B6O11·5H2O) or (CaB3O4(OH)3·H2O) is a borate mineral found in evaporite deposits of alkaline lacustrine environments. Colemanite is a secondary mineral that forms by alteration of borax and ulexite. It was first described in 18 ...

, hydroboracite, ulexite and

gypsum Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall. ...

References

Nesoborates Monoclinic minerals Minerals in space group 14 Luminescent minerals {{mineral-stub