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table 5   Countries in the world aluminum bauxite reserves and grade table

Serial number

Country

Reserves / billion tons

Annual mining volume / tons

Grade /%

Mineral type

Al 2 O 3

SiO 2

1

Guinea

93.8

1560

40~50

　

Gibbsite

2

Australia

46

3619

47~52

4~5

Gibbsite

3

Brazil

33.2

875

55

　

Gibbsite

4

Vietnam

33

　

　

　

　

　

　

　

　

　

　

Gibbsite

5

Jamaica

30

1150

50

2~3

Boehmite

6

India

26.5

200

45~60

1~5

Gibbsite

7

Suriname

19.7

343

55

2~3

Gibbsite

8

Cameroon

18.8

　

40~44

　

Gibbsite

9

China

18

　

65

10~12

Bauxite

10

Indonesia

17.6

513

55

4

Gibbsite

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