Zobrazeno 1 - 10
of 42
pro vyhledávání: '"хромититы"'
Autor:
E. M. Tomilina, R. G. Iblaminov
Publikováno v:
Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 20, Iss 2, Pp 160-171 (2021)
Here we present results of a detailed petrographic and mineralogical study of rock textures in a vertical profile through the Middle Group chromitite layers at the Thaba mine in the north-western part of the Bushveld Complex, South Africa
Externí odkaz:
https://doaj.org/article/5e0af49508374ac0a6844db9badf0722
Publikováno v:
Литосфера, Vol 0, Iss 1, Pp 81-85 (2019)
Основным механизмом формирования мантийных ультрабазитов является их деплетирование в определенной геодинамической обстановке путем
Externí odkaz:
https://doaj.org/article/3380debcffbd4f16ae8f6d3e0c144676
Publikováno v:
Литосфера, Vol 0, Iss 5, Pp 64-74 (2019)
Исследованы составы хромистой шпинели а также геохимия и минералогия элементов платиновой группы (МПГ) в небольших подиформных телах х
Externí odkaz:
https://doaj.org/article/cab795d9cd894e9a93bf1f987147eb1f
Publikováno v:
Литосфера, Vol 0, Iss 3, Pp 160-165 (2019)
Впервые для Баженовского офиолитового комплекса описано хромитовое оруденение. В комплексе выделены глиноземистые хромититы с повыше
Externí odkaz:
https://doaj.org/article/ef673fb842024a6c806f5d1fe3300425
Publikováno v:
Литосфера, Vol 0, Iss 2, Pp 076-091 (2019)
В статье на примере массивов Крака рассмотрено соотношение внутреннего строения шпинелевых перидотитов (лерцолитов и гарцбургитов) с т
Externí odkaz:
https://doaj.org/article/d5c55e4f008349488487efbdf5e89c91
Publikováno v:
Литосфера, Vol 18, Iss 3, Pp 435-444 (2018)
The unusual Bi-Ni mineralization, represented by parkerite, millerite, bismutohauchecornite, bismuthinite, nickeline and, possibly nickel analogue of smythite (?), found in the metasomatically altered chromite rocks of the Mariinsky emerald-beryllium
Externí odkaz:
https://doaj.org/article/68d1b1dd775846259ad683ed736ac14d
Autor:
D. E. Saveliev, I. I. Musabirov
Publikováno v:
Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 17, Iss 1, Pp 61-74 (2018)
We consider the geological features of ultramafic rock and chrome ore deposits. It is shown that all studied deposits are podiform in morphology that is typical for the ophiolite ultramafic rocks. Morphological and chemical features of the accessory
Externí odkaz:
https://doaj.org/article/8283701bf4a04877b733080e9dc5e0b3
Autor:
D. E. Saveliev, I. A. Blinov
Publikováno v:
Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 16, Iss 2, Pp 130-155 (2017)
The article considers a chemical variation of accessory and ore-forming chrome spinels from the Kraka ultramafic massif at the different scales, from the deposit to the thin section. A correlation analysis of compositional and structural features of
Externí odkaz:
https://doaj.org/article/1b3065cb11354368a1427735c3ef9854
Autor:
P. B. Shirjaev, N. V. Vakhrusheva
Publikováno v:
Литосфера, Vol 0, Iss 2, Pp 107-110 (2016)
Olivine and chrome-spinel compositions from chromitites and ore-bearing metamorphosed ultramafic rocks of Rai-Iz massif were compared. It was established that olivine and spinel ferruginosity are directly proportional and increase monotonically from
Externí odkaz:
https://doaj.org/article/f45a9db879c84009b2d28fd1f956aaff
Autor:
D. E. Saveliev, I. A. Blinov
Publikováno v:
Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 4, Iss 29, Pp 44-69 (2015)
This article presents the results of structural, petrographic, mineralogical and chemical studies of dunite veinlets in spinel peridotite from the Kraka ophiolites. It is demonstrated that plastic deformation of polycrystalline olivine, which form du
Externí odkaz:
https://doaj.org/article/33f1392c1f3e4936b68bc44917f08a4b