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Home
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Mineral Encyclopedia
>> Mineral Photos >> Torbernite-Torbernite
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.
Torbernite3278
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