Overview Kaolin (Aluminous Clay), South West WA Constance Range Iron Ore Project, Queensland Canning Coal Project, Western Australia Lake Macleod Gypsum Project, Western Australia Yilgarn Iron Ore Project, Western Australia East Pilbara Iron Ore Project, Western Australia South West Mineral Sands, Western Australia South West Salt Project, Western Australia Maytown Gold Project, Queensland Image Gallery

The Lake Macleod project consists of one granted tenement and four tenement applications over previously drilled gypsum mineralisation in the Lake Macleod area, North West Western Australia. Two are located to the east of Rio Tinto's existing gypsum and salt operations and two to the north of Lake Macleod. The fifth granted exploration licence lies to the immediate east of Rio Tinto's salt operations on Lake Macleod.

Areas of the ground have been subject to previous exploration. The previous reporting carried out on this ground details estimated tonnages, ore grades and project feasibilities.

Proximity to transport infrastructure

Local infrastructure includes a ship-loading facility located at Cape Cuvier, currently used by Dampier Salt (a subsidiary of Rio Tinto). The gypsum from the Dampier Salt operation is transported by haul trucks to the port of Cape Cuvier for stockpiling. Vessels are loaded by conveyor from the stockpile along the jetty. Cape Cuvier is a deep-water port capable of accommodating vessels of up to 100,000 tonnes and is in relatively close proximity to the Lake Macleod tenements.

Product

Gypsum currently produced at Lake MacLeod by Rio Tinto is of a high purity level, offering advantages for production processes associated with wallboard, cement, and plasters. The finer particle sizing of Rio's Lake MacLeod gypsum offers capital and operating cost saving potential and exhibits minimal dust generation.

Strategy

The Lake Macleod North project has in inferred mineral resource of 30.9 million tonnes of gypsum at a grade of 89.5% using a cut-off of 85% contained calcium sulphate. The resource estimation was prepared by independent geological consultants, Reynard Australia.

The resources are divided into two blocks, with Block 1 and 2 in the centre of AMMG's Lake Macleod North licences. The Company is currently reviewing the current resource with both Blocks 1 and 2 open to the north and south and the potential to increase the resource.