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(mineralogy) An orthorhombic-dipyramidal mineral containing arsenic, oxygen, and zinc.

Reinerite – Arsenite – Zn₃(AsO₃)₂ – Rnr – 4.JA.10 – Orthorhombic – Dipyramidal (mmm) – H-M symbol: (2/m 2/m 2/m) – Pbam (no. 55) – 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 – Sky blue, yellow green – Rough striated pseudohexagonal crystals – Good on {110}, {011} and {111} – 5 - 5.5 – Vitreous to adamantine – Transparent – 4.27 – Biaxial (-) – Nα = 1.740 nβ = 1.790 nγ = 1.820 – Maximum δ = 0.080 – Relief: very high.