It was proposed that the recovery of aluminium sulphate from South Australia alunite should be investigated. The only known deposit of any significance is in the Hundred of Ramsay, Yorke Peninsula, near Port Vincent. Material from this locality and also from Carrickalinga, about 30 miles south of Adelaide, has been examined previously, but the emphasis was on the recovery of potash, the recovery of alumina being only a secondary consideration. A major use for aluminium sulphate is in the paper making industry. There is believed to be a fairly large demand for a product of the following specification: Al2O3 16.0% Fe2O3 0.20% Maximum Insolubles 0.50% The market could probably be widened if the Fe2O3 content were reduced to less than 0.03 per cent. Various ways of treating the alunite to recover aluminium sulphate and other products were to be investigated. The possibility of further work would depend on the outcome of the initial investigation and on the quality of the aluminium sulphate which could be produced. The following ways of recovering aluminium sulphate were considered: 1. Heating mixtures of alunite and limestone followed by leaching and other treatments - details of this procedure are given in a report by M.J. O'Connor 2. Heating alunite alone followed by leaching with water and/or sulphuric acid 3. Direct treatment with sulphuric acid 4. Direct treatment with potassium Hydroxide. Two samples from the Yorke Peninsula deposit were available, as well as one sample of fairly pure alunite from Carrickalilnga. All three samples had been used for previous work and had been analysed chemically for major constituents.