{{Short description|Bright red halide mineral}} {{Infobox mineral|name=Sanguite|category=Halides|formula=KCuCl₃|IMAsymbol=Sgu|system=monoclinic|class=2/m|symmetry=2/ m - prismatic|unit cell=V = 481.38 ų|color=bright red|twinning=polysynthetic twinning has been observed.|cleavage=Perfect|fracture=staggered, step-like|tenacity=fragile|luster=Vitreous|opticalprop=biaxial|refractive=n α = 1.653(3) n β = 1.780(6) n γ = 1.900(8)|birefringence=δ = 0.247|pleochroism=strong|2V=Measured: 85° (5) Calculated: 82°|dispersion=very strong|streak=reddish orange|density=2.86(1) g/cm³ (measured); 2.88 g/cm³ (calculated)|references=<ref name=Foot01/>}}
'''Sanguite''' is a halide mineral. It is named after the Latin word ''sanguis'', meaning blood, due to its bright red colouration. It was approved as a valid species by the International Mineralogical Association in 2013.
== Characteristics == Sanguite is a chloride with the chemical formula KCuCl<sub>3</sub>. It crystallizes in the monoclinic system and has a Mohs scale hardness of 3.
== Formation and deposition == Sanguite was discovered in the Glavnaya Tenoritovaya fumarole on the Tolbachik volcano in Kamchatka Krai, Russia, the only place on Earth where it is known to form.<ref name=Foot01>{{Cite web |date=June 23, 2023 |title=Sanguite |url=https://www.mindat.org/min-43869.html |access-date=July 8, 2023 |website=Mindat.org}}The map of localities is at the bottom of the page, showing it is only known to form on Tolbachik.</ref> There it forms in clusters or crusts as fine prismatic crystals up to 1 mm long and 0.2 mm thick.
== References == {{Reflist}}
Category:Copper minerals Category:Halide minerals Category:Potassium minerals