General Information:
Chemical Formula:
Pb2Cu(CrO4)(PO4)(OH)
Composition:
(Molecular Weight = 705.92 gm)
Chromium 7.37 % Cr
Copper 9.00 % Cu
Phosphorus 4.39 % P
Hydrogen 0.14 % H
Lead 58.70 % Pb
Oxygen 20.40 % O
Empirical Formula:
Pb2Cu(CrO4)(PO4)(OH)
Physical Properties:
Cleavage:
[???] Indistinct
Color:
brown, brownish green, brownish black, green, or black.
Density:
6
Diaphaniety:
Transparent to Translucent
Habits:
Reniform - "Kidney like" in shape (e.g.. hematite)., Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite).,
Hardness:
2.5-3 - Finger Nail-Calcite
Luminescence:
Non-fluorescent.
Luster:
Adamantine - Resinous
Streak:
brownish
More details...