General Information:
Chemical Formula:Al3(PO4)2(OH,F)3·9(H2O)
Composition:(Molecular Weight = 485.04 gm)Aluminum 16.69 %
AlPhosphorus 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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