Griphite
Ca(Mn2+,Na,Li)6Fe2+Al2(PO4)6(F,OH)2 [CNMNC approved formula]
Named From the Greek for "enigma", as the chemical composition was originally puzzling.
IMA status : | Valid species (Pre-IMA 1891) Grandfathered |
CLASSIFICATION | |
Dana (8th edition) : |
41.09.03.01 |
(41) Anhydrous Phosphates Containing Hydroxyl or Halogen | |
(41.09) where (A B)5 (XO4)3 Zq | |
(41.09.03) | |
Nickel-Strunz (10th edition) : |
08.BF.15 |
(08) Phosphates, Arsenates, Vanadates | |
(08.B) Phosphates, etc. with Additional Anions, without H2O | |
(08.BF) With medium-sized and large cations, (OH, etc.):RO4< 0.5:1 | |
Crystal system: | Cubic System |
Point group (H-M): | m3 (or 2/m 3) — diploidal |