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Marble resources are very abundant in the world, but they are distributed unevenly or insufficient in commodity. The main marble producers in the world are Italy, China, Spain, Portugal, Greece, Turkey, the Philippine, France, Brazil, the United States, India, Austria, Russia and Japan. Italy has boundiful marble resources and is the most important marble source and producer in the world.
Marble occurrences are distributed in 26 provinces, autonomous regions and municipalities.
Marble discovered in China up to now includes more than 400 varieties. In this respect, even countries with the developed marble industry such as Italy cannot compare with China. More than 100 varieties of marble that have been coded by the foreign trade department can be exported in batches.Marble with varying colors and patterns has formed a series. There are all kinds of colors, e.g. white, black, red, gray, green, yellow and flesh-red, and all kinds of patterns, e.g. misty, landscape-shaped, whorl, willow-leaf, spotty and rare paleontological fossil patterns.
At present China's marble quarrying and processing industries are widespread in 29 provinces, autonomous regions and municipalities. The East China and South-central regions are leading producers, contributing over 70% of the country's total marble production.
Marble has its own special attribute. It has long sold well and its value tends to increase progressively. As marble has a natural attractive luster, for thousands of years,
The sources of China's marble are mainly Shandong, Guangxi, Guangdong and Jiangsu, which contribute about 50% of the country's total supply, and marble can be supplied in large batches.
- Posted April 23, 2012
- by sui
- in category Advice
China's salt resources show a basic distribution pattern of sea salt resources in the easte-rn part, lake salt resources in the western part, and well salt and mineral salt resources in the middle part.
The surface-layer salinities of the offshore waters of China show a distribution regularity: low in near-shore zones, high in open sea areas and even higher in Kurushio zones, and have a close relationship with seasons: high in winter and low in summer. In winter, the surface-layer seawater salinities average 31.5¡ë in the Bohai Sea,
Lake salt deposits may be classified into the following three types in terms of the mode of occurrence:
Rock salt mineral resources refer to the ancient solid salt mineral deposits formed prior to the Quaternary in general. For China's ancient salt mineral deposits, the essential salt-forming epochs are the Sinian, Triassic, Cretaceous and Tertiary and those of secondary importance are the Middle Ordovician, Early Permian, and Jurassic.