NDLI: CL and FTIR analysis on the diamonds in Wafangdian, Liaoning Province

Content Provider	Springer Nature Link
Author	Chen, Meihua Lu, Fengxiang Di, Jingru Zheng, Jianping
Copyright Year	2000
Abstract	The CL images show that the internal structures of the diamonds in Wafangdian, Liaoning Province is classified as three types: simple growth girdle zone, multi-stage growth complex girdle zone, and rare agate-like structure. These internal features reflect the complexity of growth processes of the diamonds. The FTIR analyses in micro area on diamond plates reveal the heterogeneity of the impurities of nitrogen and hydrogen. The variety of nitrogen contents and nitrogen aggregation states have been revealed not only in different diamonds from one kimberlite pipe but also in different zones of one diamond. The extent of conversion A defects to the aggregated B form is a function of the nitrogen aggregation temperature (T $_{NA}$), mantle residence time (t $_{MR}$), and nitrogen concentration of diamond. The interval of 0.6–0.7Ga from core to rim of diamond growth is obtained by using the FTIR curves and some geological data. The long period of diamond growth is identical with the feature in CL image.
Starting Page	1986
Ending Page	1991
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	45
Issue Number	21
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2000-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	cathodoluminescence FTIR analysis growth structure diamond Liaoning Life Sciences Physics Chemistry/Food Science Science Geosciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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