Formula: Fe1.117 Cu.45 Zn.433 S2 O22 H28
Name: Melanterite
Unit cell: 14.08 6.498 10.955 90.0 105.65 90.0 , V=965.14
Space group: P121/C1 (14)

Peterson R C , The Canadian Mineralogist , 41 (2003) p.937-949, The relatinship between Cu content and distortion in the atomic structure, of melanterite from the Richmond mine, Iron Mountain, California, Sample: mati-19, Locality: Richmond mine, Iron Mountain, California