General Information:
Chemical Formula:
Cu5(PO4)2(OH)4
Composition:
(Molecular Weight = 524.68 gm)
Copper 60.56 % Cu
Phosphorus 11.81 % P
Hydrogen 0.19 % H
Oxygen 27.44 % O
Empirical Formula:
Cu5(PO4)2(OH)
Name Origin:
From pseudo - "false" and malachite.
Physical Properties:
Cleavage:
[010] Imperfect
Color:
blue green, green, dark green, or black green.
Density:
3.6 - 4.34, Average = 3.97
Diaphaniety:
Translucent
Habits:
Botryoidal - "Grape-like" rounded forms (e.g.. malachite)., Massive - Uniformly indistinguishable crystals forming large masses., Stalactitic - Shaped like pendant columns as stalacti tes or stalagmites (e.g. calcite).
Hardness:
4-5 - Fluorite-Apatite
Luster:
Vitreous - Greasy
Streak:
bluish green
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