Rounded diamond crystals with mixed growth mechanism from alluvial placers of the Krasnovishersky district, the Urals

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Rounded diamond crystals with mixed growth mechanism from alluvial placers of the Krasnovishersky district, the Urals. / Vasiliev, E. A.; Klepikov, I. V.; Антонов, Антон .

в: Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, Том 147, № 4, 2018, стр. 114-126.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Author

Vasiliev, E. A. ; Klepikov, I. V. ; Антонов, Антон . / Rounded diamond crystals with mixed growth mechanism from alluvial placers of the Krasnovishersky district, the Urals. в: Zapiski Rossiiskogo Mineralogicheskogo Obshchestva. 2018 ; Том 147, № 4. стр. 114-126.

BibTeX

@article{927ec0e4ee2d480ab2f586c3b31e3f9a,

title = "Rounded diamond crystals with mixed growth mechanism from alluvial placers of the Krasnovishersky district, the Urals",

abstract = "Internal structure and spectroscopic characteristics were studied for two rounded diamond crystals with relicts of cube faces from contemporary alluvial placers of the Krasnovishersky district (the Urals). The share of nitrogen in form of B1 defects in these crystals reaches 70 %. These two stones represent two types of diamond: one with a joint and another with successively changing growth of cube and octahedron faces. The relatively joint development of faces of a cube and an octahedron at different stages determined the change from a cube to a skeleton cube and a cuboctahedron. It is shown that in the crystal with a successive change of the growth mechanism, the growth temperature of the cubic zone was higher than temperature of the octahedral zones growth. The peripheral part of both crystals is composed of flat zones with a tangential growth along the common direction of the {100} faces. The growth temperature at this stage has decreased, as follows from the distribution of the «platelets» size. The presence of several dissolution boundaries with subsequent regeneration in the crystal shows that dissolution occurred at the threshold of the thermodynamic stability of a diamond.",

keywords = "Diamond, FTIR, Internal structure, Mixed-habit growth, Morphology, Photoluminescence, The Urals",

author = "Vasiliev, {E. A.} and Klepikov, {I. V.} and Антон Антонов",

year = "2018",

doi = "10.30695/zrmo/2018.1474.9",

language = "English",

volume = "147",

pages = "114--126",

journal = "ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА",

issn = "0869-6055",

publisher = "Издательство {"}Наука{"}",

number = "4",

}

RIS

TY - JOUR

T1 - Rounded diamond crystals with mixed growth mechanism from alluvial placers of the Krasnovishersky district, the Urals

AU - Vasiliev, E. A.

AU - Klepikov, I. V.

AU - Антонов, Антон

PY - 2018

Y1 - 2018

N2 - Internal structure and spectroscopic characteristics were studied for two rounded diamond crystals with relicts of cube faces from contemporary alluvial placers of the Krasnovishersky district (the Urals). The share of nitrogen in form of B1 defects in these crystals reaches 70 %. These two stones represent two types of diamond: one with a joint and another with successively changing growth of cube and octahedron faces. The relatively joint development of faces of a cube and an octahedron at different stages determined the change from a cube to a skeleton cube and a cuboctahedron. It is shown that in the crystal with a successive change of the growth mechanism, the growth temperature of the cubic zone was higher than temperature of the octahedral zones growth. The peripheral part of both crystals is composed of flat zones with a tangential growth along the common direction of the {100} faces. The growth temperature at this stage has decreased, as follows from the distribution of the «platelets» size. The presence of several dissolution boundaries with subsequent regeneration in the crystal shows that dissolution occurred at the threshold of the thermodynamic stability of a diamond.

AB - Internal structure and spectroscopic characteristics were studied for two rounded diamond crystals with relicts of cube faces from contemporary alluvial placers of the Krasnovishersky district (the Urals). The share of nitrogen in form of B1 defects in these crystals reaches 70 %. These two stones represent two types of diamond: one with a joint and another with successively changing growth of cube and octahedron faces. The relatively joint development of faces of a cube and an octahedron at different stages determined the change from a cube to a skeleton cube and a cuboctahedron. It is shown that in the crystal with a successive change of the growth mechanism, the growth temperature of the cubic zone was higher than temperature of the octahedral zones growth. The peripheral part of both crystals is composed of flat zones with a tangential growth along the common direction of the {100} faces. The growth temperature at this stage has decreased, as follows from the distribution of the «platelets» size. The presence of several dissolution boundaries with subsequent regeneration in the crystal shows that dissolution occurred at the threshold of the thermodynamic stability of a diamond.

KW - Diamond

KW - FTIR

KW - Internal structure

KW - Mixed-habit growth

KW - Morphology

KW - Photoluminescence

KW - The Urals

UR - http://www.scopus.com/inward/record.url?scp=85063733545&partnerID=8YFLogxK

U2 - 10.30695/zrmo/2018.1474.9

DO - 10.30695/zrmo/2018.1474.9

M3 - Article

AN - SCOPUS:85063733545

VL - 147

SP - 114

EP - 126

JO - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА

JF - ЗАПИСКИ РОССИЙСКОГО МИНЕРАЛОГИЧЕСКОГО ОБЩЕСТВА

SN - 0869-6055

IS - 4

ER -

ID: 86254116