General Information:
Chemical Formula:
Al3(PO4)2(OH,F)3·5(H2O)
Composition:
(Molecular Weight = 411.99 gm)
Aluminum 19.65 % Al
Phosphorus 15.04 % P
Hydrogen 3.18 % H
Oxygen 62.14 % O
Empirical Formula:
Al3(PO4)2(OH)3·5(H2O)
Name Origin:
Named after William Wavell (?-1829) of England who discovered the mineral.
Physical Properties:
Cleavage:
[110] Perfect, [101] Good
Color:
blue, brown, brownish black, colorless, or green.
Density:
2.3 - 2.4, Average = 2.34
Diaphaniety:
Translucent
Habits:
Stellate - Occurs as spherical, radial aggregates radiating from a "star" like point., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Stalact itic - Shaped like pendant columns as st
Hardness:
3.5-4 - Copper Penny-Flourite
Luminescence:
None.
Luster:
Vitreous - Pearly
Streak:
white
More details...