AM_Langbanite
Formula:
Mn13 Sb O24 Si2
Name:
Langbanite
Unit cell:
11.563 11.563 11.1 90.0 90.0 120.0 , V=1285.27
Space group:
P31M (157)
Moore P B , Sen Gupta P K , Le Page Y , American Mineralogist , 76 (1991) p.1408-1425, The remarkable langbanite structure type: Crystal structure, chemical, crystallography and relation to some other cation close-packed structures