Lisiguangite
Lisiguangite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula CuPtBiS₃.
It crystallizes in the orthorhombic crystal system (space group P2_12_12_1). It is a member of the Lapieite structural group.
Key properties: Mohs hardness 2.5; specific gravity 7.42; n.d. Anisotropism: Weak to moderate; blue-green to brown streak.
IMA symbol Lsg, IMA status: approved, named in 2007.
Of contact metamorphic origin, along veins in an exoskarn in association with mafic igneous rocks (garnet pyroxenite).
It is found associated with From a heavy mineral concentrate with chalcopyrite, bornite, galena, carrolite, molybdenite, pyrite, tenorite, daomanite, Co-bearing malanite, sperrylite.
The mineral was named to honor Chinese geologist, Li Siguang (J.S. Lee) (1889–1971), Minister of Geology of China (1952–1971), Vice President of the Chinese Academy of Sciences.