AM_Hilgardite-4M
Formula:
Ca2 Cl B5 O10 H2
Name:
Hilgardite-4M
Unit cell:
11.438 11.318 6.318 90.0 90.06 90.0 , V=817.90
Space group:
A1A1 (9)
Ghose S , Wan C , American Mineralogist , 64 (1979) p.187-195, Hilgardite, Ca2[B5O9]Cl*H2O: a piezoelectric zeolite-type pentaborate