Nyerereite
McKie D, Frankis E J
Zeitschrift fur Kristallographie 145 (1977) 73-95
Nyerereite: A new volcanic carbonate mineral from Oldoinyo Lengai, Tanzania
Note: low-temperature polymorph that inverted from the high-temperature polymorph
Note: only half of the O atoms have been located
Locality: Oldoinyo Lengai, Tanzania
_database_code_amcsd 0010790
5.044 8.809 12.743 90 90 90 Cmc2_1
atom   x   y   z occ
Ca     0 .98   0
Na1    0 .32 .82 .64
K1     0 .32 .82 .36
Na2    0 .32 .12
C1     0 .35 .51
C2     0 .99 .23
O1   .22 .28 .52
O2     0 .49 .49