Qusongite
Natural tungsten carbide — an extremely rare reduced-phase mineral from China's Luobusa ophiolite.
Intro adapted from Wikipedia (CC BY-SA).
Qusongite is an IMA-recognized mineral species in the organic mineral class, with the chemical formula WC.
It crystallizes in the hexagonal crystal system (space group P-6m2).
Key properties: specific gravity 15.84; Black streak; Metallic luster.
IMA symbol Qus, IMA status: approved, named in 2007.
Found in heavy mineral separates from podiform chromitites in ophiolite.
It is found associated with Chromian chlorite, calcite, (W, Ti)C and (Ti, W)C alloys, chromite.
The name commemorates Qusong County, Tibet, where the Luobusa ophiolite is located.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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