Whelanite

Ca₃Cu_0.92O₁₃Si₃

Kampf, A. R.Mills, S. J.Merlino, S.Pasero, M.McDonald, A. M.Wray, W. B.Hindman, J. R.

American Mineralogist (2012) 97, 2007-2015

a=5.6551Å   b=3.683Å   c=27.1372Å

α=90°   β=90°   γ=90°