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ZHOU Qizhong, ZHANG Qi, FENG Xuezhi, et al. Chemical composition of the chromite and diamond potentiality of Bailushan rock mass in Suining area of Xuzhou[J]. Geological Survey of China, 2020, 7(6): 35-42. DOI: 10.19388/j.zgdzdc.2020.06.05
Citation: ZHOU Qizhong, ZHANG Qi, FENG Xuezhi, et al. Chemical composition of the chromite and diamond potentiality of Bailushan rock mass in Suining area of Xuzhou[J]. Geological Survey of China, 2020, 7(6): 35-42. DOI: 10.19388/j.zgdzdc.2020.06.05
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Chemical composition of the chromite and diamond potentiality of Bailushan rock mass in Suining area of Xuzhou

  • NO.5 Geological Team of Jiangsu Geology and Mineral Bureau, Xuzhou 221004, China

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  • Received Date: March 11, 2020
  • Revised Date: July 14, 2020
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    • Abstract
  • Bailushan rock mass is an important diamond-bearing rock mass in Northern Jiangsu Province. On the basis of the chemical composition of the chromite in Bailushan rock mass, the authors discussed its genesis and significance of the diamond potentiality and analyzed the diamond mineralization potential of Bailushan rock mass. The chromite in Bailushan rock mass has characteristics of high Cr, low Al and high Mg, which belongs to the magnochromite. It was crystallized from the peridotite that originated from the deep mantle, not a crystalline product of the rock mass, which is most likely derived from a deep-source trap in the rock mass. The crystallization temperature is 1 253~1 354 ℃, which is consistent with the formation temperature of the diamond (1 150~1 400 ℃), indicating a close relationship between them. The chemical composition of the chromite from Bailushan rock mass is very similar to that from the ore-bearing kimberlites in Shandong and Liaoning. Most chromites belong to S4 and S6, and a few chromites belong to S1 and S2. S1 and S2 chromites are the marked minerals of diamond-bearing rock mass. Bailushan rock mass has good diamond potential and prospecting prospects.
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    • References (17)
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