AM_Epididymite
Formula:
Na2 Be2 Si6 O16 H
Name:
Epididymite
Unit cell:
12.74 13.63 7.33 90.0 90.0 90.0 , V=1272.83
Space group:
PNMA (62)
Robinson P D , Fang J H , American Mineralogist , 55 (1970) p.1541-1549, The crystal structure of epididymite, Locality: Narsarsuk, Greenland