Salt
No, but a mineral can be medicine.
Elfric Drew Ingall is the author of "End of the Line: Australia's Shameful Treatment of Asylum Seekers." This book discusses Australia's policies towards asylum seekers and the ethical implications of such treatment.
No.
iodine
Diamond mineral
Sulfur
Australia is the world leader in the production of bauxite, but it isn't a mineral. So, I guess, their leading mineral is ilmenite
metal
Magnesium
Some mining companies use many protective measures including sensitive treatment of the land and sustainable production procedures. And some don't.
fertilizer, skin treatment
first