Citation: Dal Negro, A.; Giuseppetti, G.; Tadini, C. (1975). Refinement of the crystal structure of northupite: Na3Mg(CO3)2Cl. Tschermaks Mineralogische und Petrographische Mitteilungen, 22, pp. 158-163.
Formula: C2 Cl Mg Na3 O6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: C32 Mg16 O96 (C2 Mg O6)
Multiplicity: 1
Coordination sequences: