Qusongite

Qusongite is an extremely rare mineral with the simple formula WC, which shows the mineral to be a naturally occurring tungsten carbide. It was found in Luobusa ophiolite, China. This ophiolite is known for many natural reduced compounds, including native metals, diamond, silicides and carbides (e.g., moissanite, natural silicon carbide). Qusongite crystallizes in the hexagonal system, with space group P-6m2.^[3][4][5]

Qusongite
General
Category	Native element minerals
Formula	WC
IMA symbol	Qus[1]
Strunz classification	1.BA.25
Crystal system	Hexagonal
Crystal class	Ditrigonal dipyramidal (6m2) H-M symbol: (6 m2)
Space group	P6m2
Unit cell	a = 2.902, c = 2.831 [Å]; Z = 1
Identification
Color	black, steel grey
References	[2]