General Information:
Chemical Formula:
Ca2(PO4)F
Composition:
(Molecular Weight = 194.13 gm)
Calcium 41.29 % Ca
Phosphorus 15.96 % P
Oxygen 32.97 % O
Fluorine 9.79 % F
Empirical Formula:
Ca2(PO4)F
Locality:
Nyttsta Kran mine, Filipstad, Varmland, Sweden.
Name Origin:
Named from the Greek for "ash gray", in allusion to the color.
Physical Properties:
Cleavage:
[010] Distinct, [001] Indistinct
Color:
gray, blue gray, or gray brown.
Density:
2.94
Habits:
Porcelainous - Fine-grained, translucent massive material like broken china, ,
Hardness:
5 - Apatite
Luster:
Earthy (Dull)
More details...