Brearleyite

Al₇Ca_6.66Cl_1.11O₁₆

Ma, C.Connolly, H. C.Beckett, J. R.Tschauner, O.Rossman, G. R.Kampf, A. R.Zega, T. J.Sweeney Smith, S. A.Schrader, D. L.

American Mineralogist (2011) 96, 1199-1206

a=11.98Å   b=11.98Å   c=11.98Å

α=90°   β=90°   γ=90°