Bentonite

中国膨润土矿资源丰富，分布广泛，全国 23 个省 ( 区 ) 皆有膨润土矿产出。探明储量的矿区有 86 处，总保有储量矿石 24.6亿吨，居世界第 1 位。地区分布上以广西、新疆，内蒙古为多，分别占全国储量的 26.1% 、13.9% 和 8.5%。主要膨润土矿区有河北宣化、浙江余杭、河北隆化、辽宁黑山、辽宁建平、浙江临安、甘肃金昌、新疆布克塞尔。浙江临安平山的钠基膨润土矿是我国首次发现的第一个大型钠基膨润土矿床。矿床类型可分沉积型、热液型和残积型3 种，以沉积 ( 含火山沉积 ) 型为最重要，储量占全国储量的 70% 以上。成矿时代主要为中、新生代。在晚古生代也有少量矿床形成。就矿石成分看，钠基膨润土和钙基膨润土在总储量中分别占约 27% 和 31% 。

China rich, bentonite ore resources are widely distributed, the country's 23 provinces (regions) are of bentonite ore. The mine has proven reserves are 86, the total reserves of ore 24.6 tons, ranking first in the world. Regional distribution, Xinjiang in Guangxi, Inner Mongolia, respectively, 26.1% of national reserves, 13.9% and 8.5%. The main bentonite mining area Hebei Xuanhua, Zhejiang Yuhang, Hebei Liaoning, Liaoning Jianping Longhua, Montenegro, Zhejiang Ling'an, Gansu Jinchang, Xinjiang Searl booker. Sodium bentonite ore in Zhejiang Ling'an peak is the first large NA bentonite deposit first discovered in china. Deposit types can be divided into sedimentary type, hydrothermal type and residual type 3 kinds, the deposition (including volcano sedimentary) type was the most important, reserves of the country's reserves more than 70%. Metallogenic epoch is mainly in Mesozoic and Cenozoic. In the late Paleozoic also have a small amount of deposit formation. On the composition of ore, sodium bentonite and calcium base bentonite accounted for about 27% and 31% respectively in the total reserves.