Geological characteristics and prospecting significance of kimberlite pipe in Xicun area of Xuzhou, Jiangsu Province

ZHOU Qizhong; SHI Jianbin; HUANG Youbo; FENG Xuezhi; ZHANG Qi; ZHANG Fengming; CAI Yitao; YANG Xianzhong; KANG Congxuan

2019 Vol. 38, No. 1

Article Contents

Article navigation > Geological Bulletin of China > 2019 > 38(1): 152-162

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ZHOU Qizhong, SHI Jianbin, HUANG Youbo, FENG Xuezhi, ZHANG Qi, ZHANG Fengming, CAI Yitao, YANG Xianzhong, KANG Congxuan. Geological characteristics and prospecting significance of kimberlite pipe in Xicun area of Xuzhou, Jiangsu Province[J]. Geological Bulletin of China, 2019, 38(1): 152-162.

Citation:

ZHOU Qizhong, SHI Jianbin, HUANG Youbo, FENG Xuezhi, ZHANG Qi, ZHANG Fengming, CAI Yitao, YANG Xianzhong, KANG Congxuan. Geological characteristics and prospecting significance of kimberlite pipe in Xicun area of Xuzhou, Jiangsu Province[J]. Geological Bulletin of China, 2019, 38(1): 152-162.

Geological characteristics and prospecting significance of kimberlite pipe in Xicun area of Xuzhou, Jiangsu Province

1.
No.5 Geological Party, Jiangsu Bureau of Geology and Mineral Resources, Xuzhou 221004, Jiangsu, China
2.
Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China

Received Date: 12 June 2018

Revised Date: 15 August 2018

Publish Date: 15 January 2019

Abstract

Abstract

The Xicun kimberlite pipe was discovered for the first time which has ended the kimberlite-nonexistent history in northern Jiangsu Province. The geological characteristics of Xicun pipe were analyzed by petrology, geochemistry and associated minerals, and the prospecting significance was discussed. According to the regional background and the conditions of the diamond formation, it is considered that there existed basic geological conditions for kimberlite emplacement and diamond ore formation in Xicun area. The Xicun kimberlite pipe provided mother rock conditions for diamond ore. The Xicun kimberlites have similar geochemical characteristics to Shandong and Liaoning kimberlites. They were all formed by low degree partial liquation of the mantle-derived magma. Besides, they suffered hybridism of the earth crust in the process of magma rising and widespread carbonatization in the late period. The values of compatible elements are similar to those of Shandong kimberite breccia, which constitute the typical patterns of kimberlite. The heavy and light rare earth elements are characterized by strong fractionation. Associated indicator minerals include eclogite-type pyrope, chrome-rich diopside, and magnesium-rich chrome spinels, which show the characteristics of ore-bearing kimberlite.
- Xicun area of Xuzhou /
- kimberlite pipe /
- geological characteristic /
- geochemistry /
- prospecting significance

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References

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