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Thermobarometry of Inclusions: Implications to the Structure of Lithospheric Mantle and Evolution in Time and Diamond Formation
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作者 Igor V.ASHCHEPKOV Alla M.LOGVINOVA Zdislav V.SPETSIUS 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2021年第S01期18-21,共4页
Thermobarometric calculations for mineral diamond inclusions and associations(DIA)provide a systematic comparison of PTXFO2 conditions for different cratons worldwide,using a database of 4440 mineral EPMA analyses(Ash... Thermobarometric calculations for mineral diamond inclusions and associations(DIA)provide a systematic comparison of PTXFO2 conditions for different cratons worldwide,using a database of 4440 mineral EPMA analyses(Ashchepkov et al.,2021). 展开更多
关键词 diamond inclusions CRATON GARNET clinopyrogene ORTHOPYROXENE geothermal regime manle lithosphere
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An X-Ray Diffraction Study of an Inclusion in Diamond from the Luobusha Chromite Deposit in Tibet,China 被引量:1
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作者 SHINicheng BAIWenji +5 位作者 MAZhesheng FANGQingsong XIONGMing YANBinggang DAIMingquan YANGJingsui 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2003年第3期326-331,共6页
Diamond was found in podiform chromitites of ophiolite and harzburgite from Luobusha, Tibet. There are silicate inclusions in some diamond grains from this area. In the present work, the CCD (charge coupled detector) ... Diamond was found in podiform chromitites of ophiolite and harzburgite from Luobusha, Tibet. There are silicate inclusions in some diamond grains from this area. In the present work, the CCD (charge coupled detector) technology of X-ray powder diffraction was applied to the study of the inclusion in diamond from the ophiolite of Tibet. Diffraction patterns are obtained even though the inclusion is only 20 μm in crystal size. The results show that the inclusion in diamond consists of talc and clinochrysotile. Therefore, it is clear that the diamond from the ophiolite of Luobusha, Tibet, is natural diamond rather than a synthetic one. 展开更多
关键词 diamond from ophiolite inclusion in diamond Luobusha of Tibet China
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Large single crystal diamond grown in FeNiMnCo-S-C system under high pressure and high temperature conditions 被引量:6
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作者 张贺 李尚升 +4 位作者 宿太超 胡美华 李光辉 马红安 贾晓鹏 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第11期588-593,共6页
Large diamonds have successfully been synthesized from FeNiMnCo-S-C system at temperatures of 1255-1393 ℃and pressures of 5.3-5.5 GPa.Because of the presence of sulfur additive,the morphology and color of the large d... Large diamonds have successfully been synthesized from FeNiMnCo-S-C system at temperatures of 1255-1393 ℃and pressures of 5.3-5.5 GPa.Because of the presence of sulfur additive,the morphology and color of the large diamond crystals change obviously.The content and shape of inclusions change with increasing sulfur additive.It is found that the pressure and temperature conditions required for the synthesis decrease to some extent with the increase of S additive,which results in left down of the V-shape region.The Raman spectra show that the introduction of additive sulfur reduces the quality of the large diamond crystals.The x-ray photoelectron spectroscopy(XPS) spectra show the presence of S in the diamonds.Furthermore,the electrical properties of the large diamond crystals are tested by a four-point probe and the Hall effect method.When sulfur in the cell of diamond is up to 4.0 wt.%,the resistance of the diamond is 9.628×105 Ω·cm.It is shown that the large single crystal samples are n type semiconductors.This work is helpful for the further research and application of sulfur-doped semiconductor large diamond. 展开更多
关键词 diamond additive photoelectron sulfur doping morphol graphite incorporated attributed inclusion
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