Specific spectroscopic features of yellow cuboid diamonds from placers in the north-eastern Siberian Platform

被引：4
|
作者：
Mashkovtsev, Rudolf, I [1 ]
Rakhmanova, Marianna, I [2 ]
Zedgenizov, Dmitry A. [1 ,3 ]
机构：
[1] Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Brunch, 3 Koptyug Ave, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, 3 Lavrentyev Str, Novosibirsk 630090, Russia
[3] Russian Acad Sci, Zavaritsky Inst Geol & Geochem, Ural Branch, 15 Vonsovskogo Str, Ekaterinburg 620016, Russia
来源：
JOURNAL OF GEOSCIENCES | 2021年 / 66卷 / 02期
基金：
俄罗斯基础研究基金会; 俄罗斯科学基金会;
关键词：
diamond; cuboid; defects; nitrogen; Siberian platform; CUBIC DIAMONDS; INFRARED-ABSORPTION; NITROGEN AGGREGATE; INTERNAL STRUCTURE; NATURAL DIAMONDS; OPTICAL-CENTERS; SINGLE NITROGEN; CARBON ISOTOPES; COLOR; DEFECTS;
D O I：
10.3190/jgeosci.323
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A series of yellow cuboid diamonds from alluvial placers in the north-eastern Siberian platform have been examined with Fourier-transform infrared (FTIR) absorption spectroscopy, photoluminescence (PL) and electron paramagnetic resonance (EPR). All crystals having characteristic FTIR spectra with predominantly C and A centres belong to mixed type IaA/Ib with small total nitrogen content (up to 330 ppm). PL is characterized by many bands with two bands related to the NV0 and NV- centres common to all the samples. The FTIR spectra are also characterized by deformation-induced 'amber' centers. Some of the yellow diamonds studied show new bands at 4272, 4548, and 5960 cm(-1) instead of the bands at 4060 and 4170 cm(-1) common for 'amber' centres. An EPR study has revealed the presence of OK1 centres associated with titanium impurity. The plastic deformation of the studied diamonds is expressed as a 'tatami' strain pattern in the features of their internal structure.
引用
收藏
页码：117 / 126
页数：10
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