| [var. Chalcedony] Brugger, J., Ogierman, J., Pring, A., Waldron, H., Kolitsch, U. (2006) Origin of the secondary REE-minerals at the Paratoo copper deposit near Yunta, South Australia. Mineralogical Magazine, 70 (6) 609-627 doi:10.1180/0026461067060361 |