| Mineral | CROCOITE |
| Chemistry | PbCrO 4 |
| Class | Sulfates |
| Uses | Only as mineral specimens and as a minor ore of chromium. |
| Color | Orangered Yellow |
| Luster | Adamantine |
| CrystalSystem | Monoclinic |
| CrystalHabits | include prismatic crystals somewhat square in cross-sections, often striated lengthwise.Terminations are usually poorly developed and appear uneven or pitted.Also, granular and columnar. |
| Fracture | distinct in two directions lengthwise, prismatic. |
| Hardness | 2½ - 3 |
| Characteristics | Index of refraction is a very high 2.36 |
| Occurences | include Dundas District, Tasmania, Australia; Ural Mountains, Russia and Inyo and Riverside Counties in California, USA. |
| Indicators | crystal habit, locality, density, high luster and color. |
| DensityNote | very heavy for translucent minerals |
| IMAStatus | Approved |
| Discovered | 1832 |
| CellParameters | a = 7.12b = 7.44c = 6.8 β=102.41° |
| Ratio | a:b:c = 0.957 : 1 : 0.914 |
| OpticalType | Biaxial (+) |
| RI | n α =2.310 n β =2.370 n γ =2.660 |
| Birefringence | δ=0.350 |
| SurfaceRelief | Very High |
| TypeLocality | Tsvetnoi Mine Uspenskaya Mt Berezovskoye Au Deposit ( Berezovsk Mines) Berezovskii ( Berezovskii Zavod) Ekaterinberg ( Yekaterinburg; Sverdlovsk) Sverdlovskaya Oblast Urals Region Russia |
| Strunz | 6/F.01-30 6 : SulphatesChromatesMolybdates F : Chromates [CrO4]2- 01 : Tarapacaite - Crocoite series |
