A Microscopy and FTIR and PL Spectra Study of Polycrystalline Diamonds from Mengyin Kimberlite Pipes
A Microscopy and FTIR and PL Spectra Study of Polycrystalline Diamonds from Mengyin Kimberlite Pipes
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蒙阴金伯利岩管中多晶金刚石的显微镜、FTIR 和 PL 光谱研究
DOI：
10.5402/2012/871824
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发表时间：
2012-04
期刊：
影响因子：
--
通讯作者：
Xiangqing Zeng
中科院分区：
文献类型：
--
作者：
Zhijun Yang;Rong Liang;Xiangqing Zeng
蒙阴金伯利岩管中天然多晶金刚石的显微镜、FTIR和PL光谱研究结果表明，它们可分为自面多面多晶钻石(EFPCD)和无面体圆形多晶钻石(ARPCD)。不同的条件或工艺形成不同的金刚石颗粒或其尖端。它们不是在金刚石成核阶段形成的，而是在金刚石生长阶段形成的。它们可能起源于相对较深的地幔，形成于类似橄榄岩(P)型金刚石单晶的环境中。EFPCD在形成期间没有经历显着的溶解过程，可能是在金伯利岩喷发前不久快速形成的。ARPCD不仅在比EFPCD更高的温度下形成，而且经历了显着的溶解过程，在地幔中储存的时间相对较长。流体或熔体可能参与了ARPCD的形成，或在其在地幔中储存期间对其进行了改造。
The results of a microscopy and FTIR and PL spectra study of the natural polycrystalline diamonds from the Mengyin kimberlite pipes show that they can be classified as the euhedral faceted polycrystalline diamonds (EFPCDs) and anhedral rounded polycrystalline diamonds (ARPCDs). Different diamond grains or their points were formed in different conditions or processes. They were not formed in diamond nucleation stage, but in the diamond growth period. They probably originated from the relatively deeper mantle and were formed in the environment like the peridotitic (P) type diamond single crystals. The EFPCDs did not undergo a remarkable dissolution process during their formation and were possibly fast formed shortly before the kimberlite eruption. The ARPCDs not only were formed at a higher temperature than the EFPCDs but also underwent a notable dissolution process and had been stored relatively longer in the mantle. Fluids or melts probably participated in the formation of the ARPCDs or modified them during the period of their storage in the mantle.
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影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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DOI：
10.1007/s11434-008-0020-3
发表时间：
2008
期刊：
科学通报(英文版)
影响因子：
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作者：
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通讯作者：
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