AM_Henmilite Formula: Ca2 Cu B2 O12 H12 Name: Henmilite Unit cell: 5.7617 7.9774 5.6488 109.611 91.473 83.686 , V=243.08 Space group: P-1 (2)

Nakai I , Okada H , Masutomi K , Koyama E , Nagashima K , American Mineralogist , 71 (1986) p.1236-1239, Henmilite, Ca2Cu(OH)4[B(OH)4]2, a new mineral from Fuka, Okayama Prefecture,, Japan. II. Crystal structure