Ann: High Grade Resource at Minim Martap, page-6

https://www.copyright link/business/mining/alumina-looks-for-bauxite-deals-ahead-of-looming-china-shortage-20180530-h10rwo

Well worth a read.


an extract though;
"...

The bauxite exported by Alumina and Alcoa from WA has a lower alumina content than Rio's Queensland bauxite, but has less reactive silica which means it requires less caustic soda to refine, keeping costs down for refiners.

Bauxite prices have averaged $US48.6 per tonne in 2018 according to the CBIX index, and the commodity was fetching just over $US46 per tonne at last report.

UBS recently upgraded its long-term bauxite price forecast from $US40 per tonne to $US45 per tonne based on the belief that China's war on pollution would push the nation's alumina refineries to increasingly seek higher quality products.

Alumina Limited shares have surged by 260 per cent over the past 29 months, and last traded at $2.67.

Keep in mind these Bauxite prices are for 34%....Canyon has 50%