Possible economic deposits of filter-grade diatomite and of agricultural grade gypsum within Holocene lacustrine sediments in the Cooke Plains Embayment and Waltowa Swamp areas, located immediately east of Lakes Alexandrina and Albert respectively,...

Gypsum in economic quantities and grades has been discovered in two swamps located close to the Princes Highway near Ashville, about 135 km south-east by road from Adelaide. The two deposits, designated Warnes and Lihou, were discovered in 1991 by...