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Specimen from the municipality of Rancajales, where we see crystallizations of radioactive autunite that reacts to UV light, it is a secondary mineral resulting from the oxidation of primary uranium minerals in hydrothermal veins, granitic pegmatites, etc.
| Shipping Weight | 0,150 kg |
|---|---|
| Dimensions | 2,4 × 2,4 × 1,5 cm |
| Specimen Type | Mineral Specimen |
| Specimen Weight | 0.009 |
| Special Characteristics | Classic Locality, On Matrix, Fluorescent |
| Locality | Unnamed Pegmatite, Rancajales, Soto del Real, Madrid, Spain |
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| Mineral Species | Autunite |
|---|---|
| Formula | Ca(UO₂)₂(PO₄)₂·₁₀-₁₂H₂O |
| Crystal System | Orthorhombic |
| Family | Phosphate |
| Hardness | 2-2.5 |
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