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2016, 35(2) 378-386 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Geochemical characteristics of the kimberlite pipe No. 30 and genesis of diamond deposits in Wafangdian��Liaoning |
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YANG Zhan-Xing, WANG Bin-Na |
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1. Graduate School��Liaoning Technology University��Fuxin 123000��Liaoning��China; 2. Liaoning Bureau of Geology and Mineral ��esources Exploration��Shenyang 110032��China |
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Abstract��
The analysis of petrology��geochemistry and geological metallogenetic conditions of the kimberlite pipe No. 30 in Wafangdian shows that the kimberlitic magma comes from deep mantle�� Some are suffered of crustal contamination and the carbon comes from deep source�� The kimberlite belongs to the normal series of ultrabasic rocks is enriched in alkaline components�� The kimberlite is low in SiO 2 and MgO and high in CaO and CO 2 �� The content of trace elements is similar to those of garnet lherzolite�� Deposits formed in the Late Paleozoic�� The intru- sion of kimberlitic magma is controlled by the deep translithospheric Tan- - Lu fault�� The kimberlitic magma mineral- izes after intruding into the junction of the NEE- -trending faults and EW- -trending faults�� The kimberlite pipe is formed by the alternation of eruption and intrusion�� |
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Keywords��
kimberlite
characteristic
genesis of deposit
geochemistry
Wafangdian of Liaoning
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Received Revised Online: |
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