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 Cooker Knobs,Gas Stove Knobs,Universal Stove Knobs,Universal Gas Stove Knobs Ningbo Best Channel Import & Export Co., Ltd. , https://www.zjnbbtc-metal.com