| Mineral | Autunite |
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| Formula | Ca(UO2)2(PO4)2 · 10-12H2O |
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| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
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| Cleavage | Perfect on {001}, indistinct on {100} |
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| Color | Yellow, greenish-yellow, pale green; dark green, greenish black |
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| Density | 3.0 – 3.2 g/cm3 |
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| Diaphaneity | Transparent, Translucent |
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| Fracture | Micaceous |
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| Hardness | 2.0 - 2.5 |
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| Lustre | Sub-Vitreous, Resinous, Waxy, Pearly |
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| Streak | Pale yellow |
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| Type Loc. | Saint-Symphorien-de-Marmagne uranium deposit, Saint-Symphorien-de-Marmagne, Autun, Saône-et-Loire, Bourgogne-Franche-Comté, France |
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| Dana 8 Class | 40.2a.1.1 |
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| Strunz Class | 8.EB.05 |
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| Mindat | mindat.org |
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| WebMineral | WebMineral |
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| ID | 481 |
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