AM_Brochantite_1 Formula: Cu4 S (O10 H6) Name: Brochantite Unit cell: 12.776 9.869 6.026 90.15 90.0 90.0 , V=759.79 Space group: P21/N11 (14)

Merlino S , Perchiazzi N , Franco D , European Journal of Mineralogy , 15 (2003) p.267-275, Brochantite, Cu4SO4(OH)6: OD character, polytypism and crystal structures