Structures by: Contreira R. R.

Total: 3

Rankamaite

Al0.6K1.26Na2.22Nb1.29O31Ta9.11

Atencio, D.Contreira, R. R.Mills, S. J.Coutinho, J. M. V.Honorato, S. B.Ayala, A. P.Ellena, J.De Andrade, M. B.

American Mineralogist (2011) 96, 1455-1460

a=17.224Å   b=17.687Å   c=3.9361Å

α=90°   β=90°   γ=90°

Witzkeite

CaFe0.05H4K4N2Na4O24S4

Nestola, F.Camara, F.Chukanov, N. V.Atencio, D.Coutinho, J. M. V.Contreira, R. R.Farber, G.

American Mineralogist (2012) 97, 1783-1787

a=24.902Å   b=5.3323Å   c=17.246Å

α=90°   β=94.281°   γ=90°

Mejillonesite

H7Mg2NaO11P2

Atencio, D.Chukanov, N. V.Nestola, F.Witzke, T.Coutinho, J. M. V.Zadov, A. E.Contreira, R. R.Farber, G.

American Mineralogist (2012) 97, 19-25

a=16.295Å   b=13.009Å   c=8.434Å

α=90°   β=90°   γ=90°