The Internal Structure of Yellow Cuboid Diamonds from Alluvial Placers of the Northeastern Siberian Platform

被引：4
|
作者：
Ragozin, Alexey [1 ,2 ]
Zedgenizov, Dmitry [1 ,2 ]
Kuper, Konstantin [3 ]
Kalinina, Viktoria [1 ,2 ]
Zemnukhov, Alexey [4 ]
机构：
[1] Russian Acad Sci, Siberian Branch, VS Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Dept Geol & Geophys, Novosibirsk 630090, Russia
[3] Russian Acad Sci, Budker Inst Nucl Phys, Siberian Branch, Novosibirsk 630090, Russia
[4] JSC Almazy Anabara, Yakutsk 678174, Russia
来源：
CRYSTALS | 2017年 / 7卷 / 08期
关键词：
diamond; internal structure; electron backscatter diffraction; X-ray topography; ELECTRON BACKSCATTER DIFFRACTION; NATURAL DIAMONDS; GROWTH ENVIRONMENT; BIREFRINGENCE; INCLUSIONS; MORPHOLOGY; CRYSTALS; CRYSTALLIZATION; POLYGENESIS; DISSOLUTION;
D O I：
10.3390/cryst7080238
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Yellow cuboid diamonds are commonly found in diamondiferous alluvial placers of the Northeastern Siberian platform. The internal structure of these diamonds have been studied by optical microscopy, X-Ray topography (XRT) and electron backscatter diffraction (EBSD) techniques. Most of these crystals have typical resorption features and do not preserve primary growth morphology. The resorption leads to an evolution from an originally cubic shape to a rounded tetrahexahedroid. Specific fibrous or columnar internal structure of yellow cuboid diamonds has been revealed. Most of them are strongly deformed. Misorientations of the crystal lattice, found in the samples, may be caused by strains from their fibrous growth or/and post-growth plastic deformation.
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页数：12
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