Yellow-orange powder in a capsule of the rare sulphate chloride-fluoride mineral galeite from the type locality in Searles Lake (Searles Lake, San Bernardino County, California, United States of America) and only one of the three known localities worldwide. Ex Vandenbroucke Museum collection specimen, from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Galeite
Galeite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Na₁₅(SO₄)₅ClF₄.
It crystallizes in the hexagonal crystal system (space group P31m).
Key properties: specific gravity 2.605; optically uniaxial.
IMA symbol Gle, IMA status: approved, named in 1955.
Found in a playa lake deposit.
It is found associated with Schairerite, gaylussite, northupite, pirssonite, tychite, trona, hanksite, calcite.
The mineral was named to honor Dr. William Alexander Gale (1898–1985), Director of Research of the American Potash and Chemical Corporation.