AM_Melanovanadite
Formula: Ca1.02 V4 O15 H10
Name: Melanovanadite
Unit cell: 6.36 18.09 6.276 110.18 101.62 82.86 , V=662.67
Space group: P-1 (2)

Konnert J A , Evans H T , American Mineralogist , 72 (1987) p.637-644, Crystal structure and crystal chemistry of melanovanadite, a natural vanadium, bronze, Locality: Minas Ragra, Cerro de Pasco, Peru