AM_Ransomite
Formula: Cu Fe2 S4 O22 H12
Name: Ransomite
Unit cell: 4.811 16.217 10.403 90.0 93.02 90.0 , V=810.51
Space group: P121/C1 (14)

Wood M M , American Mineralogist , 55 (1970) p.729-734, The crystal structure of ransomite