AM_Hilgardite-1A Formula: Ca2 B5 O10 Cl H2 Name: Hilgardite-1A Unit cell: 6.452 6.559 6.286 61.6 118.72 105.86 , V=204.87 Space group: P1 (1)

Burns P C , Hawthorne F C , Acta Crystallographica, Section C , 50 (1994) p.653-655, Refinement of the structure of hilgardite-1A, Locality: Penobsquis potash deposit, Sussex, New Brunswick