AM_Alvanite
Formula: Zn Al4 V2 O20 H16
Name: Alvanite
Unit cell: 17.808 5.132 8.881 90.0 92.11 90.0 , V=811.09
Space group: P121/N1 (14)

Pertlik F , Dunn P J , Neues Jahrbuch fur Mineralogie, Monatshefte , 1990 (1990) p.385-392, Crystal structure of alvanite, (Zn,Ni)Al4(VO3)2(OH)12*2H2O, the, first example of an unbranched zweier-single chain vanadate in nature