Here is some further information:
Rank
Country
Magnesite Reserves (1,000 metric tonnes)
1 Russia 2,300,000
2 North Korea 2,300,000
3 China 1,000,000
4 Brazil 390,000
5 Australia 320,000
6 Greece 280,000
7 Turkey 230,000
8 Slovakia 120,000
9 India 82,000
10 Austria 50,000
Country (or area) Magnesium production (thousand tonnes) World 1,020 (est)
China 800
Russia 65
United States 50 (est)
Israel 25
Kazakhstan 23
Ukraine 19
Brazil 15
Turkey 10
South Korea 10
Iran 5
This shortage is going to cause a lot of problems. Why do I think the production cut was deliberate.