Journal
ENERGY EXPLORATION & EXPLOITATION
Volume 27, Issue 5, Pages 333-343Publisher
SAGE PUBLICATIONS INC
DOI: 10.1260/0144-5987.27.5.333
Keywords
Permo-Carboniferous coal; Associated gallium ore deposit; China
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Funding
- National Natural Science Foundation of China (NSFC) [40173004, 40773040]
- Main Science and Technology Research Project of Education Ministry [206011]
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Gallium is widely used in electronic industry and its current price is about 500 US dollars pro kilogram. It has been found that its contents are very high in Pernio-Carboniferous coal of China. In order to look for valuable associated gallium deposits in coal, gallium content of 177 coal samples were determined by using inductively Coupled plasma-mass spectrometry (ICP-MS) and the data of 873 coal samples from Chinese Permo-Carboniferous coalfields were collected. The results show that the average gallium concentration of Chinese Permo-Carboniferous coals is 15.49 mu g.g(-1). There are two concentration types of gallium in Chinese Permo-Carboniferous coals: One type is that gallium has enriched to an ore deposit, and another type is that gallium is locally enriched in coal seams, but has not formed it valuable associated gallium ore deposit. The gallium concentration in Chinese Permo-Carboniferous coal may have several different sources: concentration in sedimentation stage., magmatic hydrothermal inputs and low-temperature hydrothermal fluids.
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