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According to the Mineral Commodity Summaries in 1999, in 1997 the world’s annual production of natural diamonds was 57.70 million carats. The countries that ranked the first five places in the world’s production were Australia, Congo (Kinshasa), Russia, South Africa and Botswana in succession. In 1997 China’s annual natural diamond production was 120,400 carats. Diamond […]

China is a huge potential market of diamond consumption. According to an investigation made by the De Beers Central Marketing Organization in 1995, by 2000 the consumption population of diamond jewelry in China will increase by 50% and the purchasing amount will grow by 47%. It is expected that China will rank among the largest […]

The reserves and production of natural diamonds of China are both limited and do not occupy an important position. To further expand China’s diamond resources, it is necessary to implement the Century-across Diamond Exploration Plan. Besides, the introduction of fo-reign funds and advanced technology, reform of existing diamond mines and processing enterprises and strict scientific […]

In nature sulfur is a ubiquitous nonmetallic element that has a strong affinity for other elements. It exists in many forms, e.g. as native sulfur, hydrogen sulfide, metallic sulfide and sulfate, and forms various types of sulfur deposit. The principal industrial minerals and compounds of sulfur include native sulfur, pyrite, marcasite, pyrrhotite, hydrogen sulfide and […]

Sulfur resources are very abundant in China. In this section total sulfur resources include sulfur reserves and potential resources. Sulfur reserves refer to reserves of pyrite, by-product pyrite and native sulfur explored through geological exploration; sulfur potential resources include the unexplored part of resources of sulfur recoverable from oil, natural gas, nonferrous metal sulfides, coal, […]