The Unit Cell of Hodgkinsonite

The minerala hodgkinsonite, Mn(ZnOH)2SiO4, crystallizes in space group P21/C(C52h). There are four molecules in the monoclinic cell of dimensions a0 = 11.764 A, b0 - 5.3182 A, c0 = 8.182 A, beta = 95° 25'.