Mineralogy of Darling Range bauxites in relation to chemical reactivity – new ore types

Summary

Bauxite with lower than normal (approx. 15%) iron content has been encountered in drill samples from the Huntly minesite of Alcoa of Australia Ltd.

The study compares the distribution of both mineralogical and elemental analyses of Huntly North bauxites with bauxite from other operating minesites.

Report includes results of a small supplementary project, carried out to address the deficiency in our knowledge of the mineralogy and chemistry of Darling Range bauxite, and to establish the forms of aluminium (AI) in pisolitic bauxite. These results were published in Report 157 in 1995.

Keywords: bauxite, mineralogy, alumina, ore types, extraction