Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Mineralogical and crystallographic features of polycrystalline yakutite diamond. / Ohfuji, Hiroaki; Nakaya, Motosuke; Yelisseyev, Alexander P. и др.
в: Journal of Mineralogical and Petrological Sciences, Том 112, № 1, 02.2017, стр. 46-51.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Mineralogical and crystallographic features of polycrystalline yakutite diamond
AU - Ohfuji, Hiroaki
AU - Nakaya, Motosuke
AU - Yelisseyev, Alexander P.
AU - Afanasiev, Valentin P.
AU - Litasov, Konstantin D.
PY - 2017/2
Y1 - 2017/2
N2 - This study revealed for the first time the microtexture and crystallographic features of natural polycrystalline diamond, yakutite found in placer deposits in the Siberian Platform, Russia. Yakutite consists of well-sintered nanocrystalline (5-50 nm) diamond and small amount of lonsdaleite showing distinct preferred orientations. Micro-focus X-ray and electron diffractions showed a coaxial relationship between lonsdaleite 100 and diamond 111, suggesting the martensitic formation of yakutite from crystalline graphite. These textural and crystallographic features are well comparable to those of the impact diamonds from the Popigai crater located in the central Siberia and strongly support the idea that yakutite is a product of long-distance outburst from the Popigai crater, which has been inferred merely from the geochemical signatures.
AB - This study revealed for the first time the microtexture and crystallographic features of natural polycrystalline diamond, yakutite found in placer deposits in the Siberian Platform, Russia. Yakutite consists of well-sintered nanocrystalline (5-50 nm) diamond and small amount of lonsdaleite showing distinct preferred orientations. Micro-focus X-ray and electron diffractions showed a coaxial relationship between lonsdaleite 100 and diamond 111, suggesting the martensitic formation of yakutite from crystalline graphite. These textural and crystallographic features are well comparable to those of the impact diamonds from the Popigai crater located in the central Siberia and strongly support the idea that yakutite is a product of long-distance outburst from the Popigai crater, which has been inferred merely from the geochemical signatures.
KW - Impact diamond
KW - Microtexture
KW - Nanocrystalline diamond
KW - TEM
KW - Yakutite
KW - TRANSFORMATION
KW - LONSDALEITE
KW - ORIGIN
KW - DIRECT CONVERSION
KW - GRAPHITE
UR - http://www.scopus.com/inward/record.url?scp=85015271633&partnerID=8YFLogxK
U2 - 10.2465/jmps.160719g
DO - 10.2465/jmps.160719g
M3 - Article
AN - SCOPUS:85015271633
VL - 112
SP - 46
EP - 51
JO - Journal of Mineralogical and Petrological Sciences
JF - Journal of Mineralogical and Petrological Sciences
SN - 1345-6296
IS - 1
ER -
ID: 10274327