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