AM_Gearksutite
Formula:
Ca Al F4 O2
Name:
Gearksutite
Unit cell:
4.94 6.81 6.978 101.12 94.86 110.07 , V=213.43
Space group:
P-1 (2)
Marchetti F , Perchiazzi N , American Mineralogist , 85 (2000) p.231-235, The crystal structure of gearksutite, CaAlF4(OH).H2O