Dual contradiction attach to diamond deposit
China’s diamond deposits are mainly of medium and small sizes. The largest Wangcun diamond deposit at Mengyin, Shandong, has retained diamond reserves of only 65.79 kg, which cannot compared with large deposits in other countries. China’s retained diamond (mineral) reserves account for only 0.1% of the world’s diamond reserve base, and the per-capita diamond reserves are very scarce. Owing to limited explored reserves and insufficient occurrences that can be developed and mined, diamond has long been one of the deficient mineral resources.
Resources paucity and concentrated distribution
The explored diamond reserves are concentrated in Liaoning, Shandong, Hunan and Jiangsu provinces, mainly clustered at Liaoning and Shandong. In 1997 the retained diamond reserves of Liaoning and Shandong were 2,169.74 kg and 1,863.31 kg respectively, accounting for 52.34% and 44.95% of the total reserves respectively, both amounting to 97.29% of the total; whereas the sum of the retained reserves of Hunan and Jiangsu was 112.08 kg, making up 2.71% of the total. The index of the distribution of diamond occurrences in China is shown in Table.
Liaoning Province is the largest source of diamond in China. In the province there are nine diamond occurrences, all located at Wafangdian City (Fuxian County), of which six are primary ones (three large occurrences, two medium-sized occurrences and one small occurrence); besides, there are three placer diamond occurrences (one medium-sized occurrence and two small occurrences).Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,stone crusher,cement mill Welcome all of you to visit our official website.wet magnetic separator:http://www.crusher-machine.com/25.html
Shandong Province is the second largest source of diamond in China and also the locality where the first primary diamond deposit was discovered. In the province, there are nine diamond occurrences, of which five (two large and three small) occurrences are primary ones, all distributed at Mengyin County; in addition there are four placer diamond occurrences, all small-sized, distributed at Tancheng County.
In Hunan Province diamond resources were developed earlier. There are four occurren-ces, all of which are placer deposits. Of the four occurrences, the Dingjiagang diamond deposit at Changde and the Taoyuan diamond deposit at Taoyuan County are medium-sized and the other two are both small ones.
China’s diamond resources are characterized by the paucity of resources, concentrated distribution, dominance of kimberlite-type primary deposits, low grade and good quality. The diamond deposits are suited for combined open-pit mining and underground mining.
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