reinerite

{{Infobox mineral | name = Reinerite | category = arsenite | boxwidth = | boxbgcolor = | image = Reinerite, Legrandite, Adamite-1126654.jpg | caption = | strunz = 4.JA.10 | formula = Zn3(AsO3)2 | IMAsymbol = Rnr | molweight = | system = Orthorhombic | class = Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) | symmetry = Pbam (no. 55) | unit cell = a = 6.092 Å, b = 14.407 Å c = 7.811 Å; Z = 4 V = 685.55 a:b:c = 0.423 : 1 : 0.542 | color = Sky blue, yellow green | habit = Rough striated pseudohexagonal crystals | twinning = | cleavage = Good on {110}, {011} and {111} | fracture = | tenacity = | mohs = 5 - 5.5 | luster = Vitreous to adamantine | refractive = nα = 1.740 nβ = 1.790 nγ = 1.820 | opticalprop = Biaxial (-) | birefringence = Maximum δ = 0.080 | pleochroism = | streak = | gravity = 4.27 | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent | other = Relief: very high | references = }}

Reinerite is a rare arsenite (arsenate(III)) mineral with chemical formula Zn3(AsO3)2. It crystallizes in the orthorhombic crystal system.