AM_Labradorite_3
Formula: Ca.325 Na.175 Si1.174 Al.824 O4
Name: Labradorite
Unit cell: 8.1747 12.8706 7.1014 93.461 116.086 90.514 , V=669.30
Space group: C-1 (2)

Wenk H R , Joswig W , Tagai T , Korekawa M , Smith B K , American Mineralogist , 65 (1980) p.81-95, The average structure of An 62-66 labradorite, Lake County neutron, feldspar