Metatorbernite
Mineral Cu(UO2)2(PO4)2·8H2O
Take care.
- Radioactive: Keep it in a closed, labelled box away from where people sit or sleep, handle it briefly, wash your hands after, and never grind or cut it.
About it
The stable, lower-water form of torbernite, which most torbernite slowly becomes in a collection. The same green square plates, no fluorescence, and radioactive.
- Type
- Mineral
- Group
- Phosphate, meta-autunite group (uranyl)
- Formula
- Cu(UO2)2(PO4)2·8H2O
- Hardness (Mohs)
- 2.5
- Specific gravity
- 3.7–3.8
- Streak
- pale green
- Lustre
- vitreous (glassy), pearly
- Crystal system
- Tetragonal
- Colours
- green, dark green, apple green
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.