AM_Pyroxmangite
Formula:
Mn6.775 Mg.225 Si7 O21
Name:
Pyroxmangite
Unit cell:
9.712 10.536 17.438 112.15 102.88 82.95 , V=1609.61
Space group:
C-1 (2)
Pinckney L R , Burnham C W , American Mineralogist , 73 (1988) p.809-817, High-temperature crystal structure of pyroxmangite, Sample: T = 24 C