Report on recovery of fertiliser potash from Lake Campion ...
Potash alunite is isomorphous with natroalunite, a complete series of minera1s being known ranging from pure to pure Na20.} The composition of pure potash alunite, or simply alunite as it will henceforth be designated, is as follows:K20 /o 37 oO/o S03 ~ H20 %