General Information:
Chemical Formula:
Al3(PO4)2(OH,F)3·9(H2O)
Composition:
(Molecular Weight = 485.04 gm)
Aluminum 16.69 % Al
Phosphorus 12.77 % P
Hydrogen 4.26 % H
Oxygen 64.32 % O
Fluorine 1.96 % F
Empirical Formula:
Al3(PO4)2(OH)2.5F0.5·9(H2O)
Environment:
Phosphate deposit.
Locality:
Fairview mine, Robertstown, Burra County, SA, Australia.
Name Origin:
Named for D. King, 1926-1990), geologist, department of Mines, SA, Australia.
Physical Properties:
Color:
white.
Density:
2.2 - 2.3, Average = 2.25
Diaphaniety:
Translucent
Habits:
Platy - Sheet forms (e.g. micas)., Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks., Nodular - Tuberose forms having irregular p rotuberances over the surface.
Streak:
white
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