Gillardite

Cl₂Co_0.012Cu_3.081Fe_0.004H₆Ni_0.903O₆

Clissold, M. E.Leverett, P.Williams, P. A.Hibbs, D. E.Nickel, E. H.

The Canadian Mineralogist (2007) 45, 317-320

a=6.8364Å   b=6.8364Å   c=13.8459Å

α=90°   β=90°   γ=120°