Sanguite
A bright-red potassium-copper chloride — named from Latin sanguis, 'blood' — approved in 2013.
Intro adapted from Wikipedia (CC BY-SA).
Sanguite is an IMA-recognized mineral species in the halide class, with the chemical formula KCuCl₃.
It crystallizes in the monoclinic crystal system (space group P2_1/c).
Key properties: Mohs hardness 3; specific gravity 2.96; Reddish orange streak; Vitreous luster; optically biaxial.
IMA symbol Sgu, IMA status: approved, named in 2013.
Occurs as sublimates on scoria around an active fumarole.
It is found associated with Belloite, avdoninite, eriochalcite, sylvite, halite, carnallite, mitscherlichite, chrysothallite, romanorlovite, mellizinkalite, gypsum, chlorothionite.
Derived from the Latin sanguis (blood), referring to its bright red, blood-like color.