Whitlockite is a mineral, an unusual form of
calcium phosphate. It's actual formula is debatable depending on the authority consulted; starting from Ca3(PO4)2 it may also contain magnesium (CaMg)2(PO4)2 to the more complex Ca9(MgFe)(PO4)6PO3OH. It is a relatively rare mineral but is found in granitic pegmatite and has also been found in meteorites. Named for Herbert Percy Whitlock (1868-1948), American mineralogist, Curator, American Museum of Natural History, New York City, NY, USA.
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General Information:
Chemical Formula:
Ca9(Mg,Fe++)(PO4)6(PO3OH)
Physical Properties:
Cleavage:
None
Color:
colorless, gray, gray white, yellowish, or white.
Density:
3.13
Diaphaniety:
Transparent to Translucent
Hardness:
5 - Apatite
Luster:
Vitreous - Resinous
Streak:
white
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