Formula: Fe1.212 Cu.14 Zn.648 S2 O22 H28
Name: Melanterite
Unit cell: 14.052 6.496 11.026 90.0 105.61 90.0 , V=969.35
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: 98-rp-36, Locality: Richmond mine, Iron Mountain, California