Autunite
| ID | 438 | |
|---|---|---|
| Mineral | Autunite | |
| Location | Assunção - Aldeia Nova - Viseu - Portugal | |
| Fluorescence | LW-UV: check SW-UV: check |
|
| Mindat.org |
View Autunite information at mindat.org |
|
Mindat data
| ID | 433 |
|---|---|
| Long ID | 1:1:433:0 |
| Formula |
Ca(UO2)2(PO4)2 · 10-12H2O
|
| IMA Status |
0 1 |
| Occurrence | Granite pegmatite |
| Other Occurrences | In the oxidation zone of uranium-bearing rocks, including sandstones, hydrothermal veins, and granitic pegmatites. |
| Industrial | Ore mineral of uranium. |
| Discovery Year | 1852 |
| Diapheny | Transparent,Translucent |
| Cleavage | Perfect on {001}, indistinct on {100} |
| Tenacity | sectile |
| Colour | Yellow, greenish-yellow, pale green; dark green, greenish black. |
| Hardness (min) | 2.0 |
| Hardness (max) | 2.5 |
| About the name | Named by Henry J. Brooke and William H. Miller in 1854 for the type locality at Saint Symphorien near Autun, Saône-et-Loire, France. |
| Streak | Pale yellow |
| Crystal System | Orthorhombic |
| Cleavage Type | Perfect |
| Fracture type | Micaceous |
| Morphology | Crystals thin to thick tabular {001}, and with a rectangular or octagonal outline. Subparallel growths common; foliated or scaly aggregates, crusts. |
| Twinning | Rare interpenetrant twinning on {110}. |
| UV | Strong yellow-green (LW & SW UV). |
| Comment Luster | Pearly on cleavage {001} |
| key_elements |
0 |
| shortcode_ima | Aut |
| Group | Autunite Group |
Details
Price: € 25
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Ca | Calcium | |
| H | Hydrogen | |
| O | Oxygen | |
| P | Phosphorus |
|
| U | Uranium |
|