AM_Li2(Mg,Cu)Cu2[Si2O6]2 Formula: Mg.87 Cu2.13 Si4 Li2 O12 Name: Li2(Mg,Cu)Cu2[Si2O6]2 Unit cell: 5.7068 7.4784 5.2193 99.911 97.436 84.52 , V=216.97 Space group: P-1 (2)

Horiuchi H , Saito A , Tachi T , Nagasawa H , American Mineralogist , 82 (1997) p.143-148, Structure of synthetic Li2(Mg,Cu)Cu2[Si2O6]2: A unique chain silicate, related to pyroxene