General Information:
Chemical Formula:
Cu2Al(AsO4)(OH)4·4(H2O)
Composition:
(Molecular Weight = 433.08 gm)
Aluminum 6.23 % Al
Copper 29.35 % Cu
Arsenic 17.30 % As
Hydrogen 2.79 % H
Oxygen 44.33 % O
Empirical Formula:
Cu2Al(AsO4)(OH)4·4(H2O)
Name Origin:
From the Greek, liros - "pale" and konia - "powder."
Physical Properties:
Cleavage:
[100] Indistinct, [011] Indistinct
Color:
light blue, green, sky blue, or verdigris green.
Density:
2.9 - 3, Average = 2.95
Diaphaniety:
Transparent to Translucent
Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
None.
Luster:
Vitreous - Resinous
Streak:
light blue
More details...