Occurrence of Some Ni- and Sn-Rich Minerals in Copper Converter Slags

E. Wearing*
Department of Geology and Mineralogy, Oxford University, Parks Road, Oxford OX1 3PR
*Present address: 210 Wingrove Road, Newcastle upon Tyne NE4 9DD.

Abstract: The chemistry of opaque spinel, delafossite (Cu2O·Fe2O3), cuprite (Cu2O), cassiterite, nickel-olivine (Ni2SiO4), and bunsenite (NiO) from some copper converter slags has been investigated by electron microprobe analysis. The spinel has a complex composition containing up to 33.89% NiO and 47.69% SnO2, ranging from essentially Ni2SnO4 to (Ni,Fe2+)Fe23+O4. The associated delafossite contains up to 19.18% NiO and 38.15% SnO2. The chemical variation of the mineral phases is evaluated, and it appears that Ni2+ enters the spinel and delafossite to charge-balance the octahedrally coordinated Sn4+.

Mineralogical Magazine; June 1984 v. 48; no. 347; p. 243-249; DOI: 10.1180/minmag.1984.048.347.08
© 1984, The Mineralogical Society
Mineralogical Society (www.minersoc.org)