aluminium plant commissioning and silica drill, page-53

Interesting that they are planning on extending the depth of the deposit. It can only mean that they want a very long life silicon smelter, or they plan on a higher production rate greater than 80,000tpa.


"Comalco Ltd took up EL1/71 over Cape Sorell in 1971,
to explore the potential of the Rocky Cape Group
quartzite as a source of silica for silicon metal
manufacture (Picken, 1971). Diamond drilling at
several sites showed that the quartzites were indeed of
high purity, and produced a resource estimate of
2.78 Mt at 99.13% SiO2, 0.34% Al2O3, 0.05% Fe2O3
(Picken, 1975; Bartlett, 1978). "