chaidamuite

{{Infobox mineral | name = Chaidamuite | category = Sulfate minerals | boxwidth = | boxbgcolor = | image = | imagesize = | caption = | formula = ZnFe3+(SO4)2(OH)·4(H2O) | IMAsymbol = Cdm | strunz = 7.DC.30 | system = Triclinic | class = Pedial (1) (same H-M symbol) | symmetry = P1 | unit cell = a = 7.309(2) Å, b = 7.202(2) Å, c = 9.691(3) Å; α = 89.64(3)°, β = 105.89(1)°, γ = 91.11(1)°; Z = 2 | color = Brown to yellow-brown | habit = Tabular pseudocubic crystals and granular masses; pseudomonoclinic | twinning = | cleavage = On {001} and {100}, perfect. | fracture = conchoidal | tenacity = | mohs = 2.5–3 | luster = Vitreous | polish = | refractive = nα = 1.632 nβ = 1.640 nγ = 1.688 | opticalprop = Biaxial (+) | birefringence = δ = 0.056 | 2V = 44° | dispersion = | pleochroism = Strong: X= pale yellow, colorless; Y= pale yellow; z= Brownish yellow | fluorescence= | absorption = | streak = Pale yellow | gravity = | density = | fusibility = | diagnostic = | solubility = | diaphaneity = Translucent | other = | references = }}

Chaidamuite is a rare zinc – iron sulfate mineral with chemical formula: ZnFe3+(SO4)2(OH)·4H2O.