Wyomingite

Wyomingite is a type of volcanic rock.

[1] It is a potassium enriched, alkaline, basic, phonolite first found in the Leucite Hills of Sweetwater County, Wyoming.

[2] Wyomingites are between foidite and tephri-phonolite in composition (in the QAPF classification) and contain leucite (20-25%), augite, phlogopite, apatite, calcite, magnetite and small amounts of olivine (but the latter may be absent).

Wyomingite has also been found at two locations in Australia: West Kimberley,[4] and near Ballina, New South Wales.

[5] This article related to petrology is a stub.