Formula: Fe.706 Zn.612 Cu.682 S2 O22 H28
Name: Melanterite
Unit cell: 14.1 6.518 10.886 90.0 105.76 90.0 , V=962.86
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-7, Locality: Richmond mine, Iron Mountain, California