Torbernite
Chemical Formula	Cu(UO2)2(PO4)2·8 - 12 H2O
Species	Phosphates
Crystal System	Tetragonal
Mohs Scale	2
Specific Gravity	3.2
Color	Emerald green to apple green
Streak	Pale green
Luster	Sub-Adamantine, Vitreous, Waxy, Pearly
Refractive Index	n = 1.590 - 1.592 n = 1.581 - 1.582
Diaphaneity	Transparent, Translucent
Cleavage	PerfectPerfect on micaceous, indistinct on
Fracture	Brittle
Crystal Habit：Tabular crystals; Foliated to earthy masses and encrustations
Geological Setting：Uncommon mineral in secondary zone of copper bearing uranium deposits.