AM_Callaghanite
Formula: Cu2 Mg2 C O11 H10
Name: Callaghanite
Unit cell: 10.006 11.752 8.2132 90.0 107.38 90.0 , V=921.70
Space group: C12/C1 (15)

Brunton G D , American Mineralogist , 58 (1973) p.965-965, Refinement of the callaghanite structure