Results 41 to 50 of about 2,508 (202)

Criteries and prospects of diamonds of the Vitebsk granulite massif

open access: yesЖурнал Белорусского государственного университета: География, геология, 2021
The article describes the history of studying the diamond content of tectonic structures of the territory of Belarus. Based on the results of magnetometric, mineralogical, tectonic studies carried out by industrial geologists and scientists over the past
Victor S. Konishchev   +1 more
doaj   +1 more source

Mineralogy of garnets from the Jubileinaya kimberlite pipe and Ottorzhenets kimberlite body

open access: yesOres and metals
The article presents results of a study of the chemical composition of garnet xenocry-stals from a concentrate of the heavy fraction of kimberlites from the Yubileinaya pipe and Ottorzhenets kimberlite body. Samples from porphyry kimberlites and autolithic kimberlite breccias were taken for analysis from the Yubileinaya pipe.
Milaushkin M. V.   +4 more
openaire   +2 more sources

Platinum-group element contents of Karelian kimberlites: implications for the PGE budget of the sub-continental lithospheric mantle [PDF]

open access: yes, 2017
We present high-precision isotope dilution data for Os, Ir, Ru, Pt, Pd and Re in Group I and Group II kimberlites from the Karelian craton, as well as 2 samples of the Premier Group I kimberlite pipe from the Kaapvaal craton. The samples have, on average,
Barnes, Sarah-Jane   +3 more
core   +2 more sources

The provenance of Borneo's enigmatic alluvial diamonds:A case study from Cempaka, SE Kalimantan [PDF]

open access: yes, 2016
Gem-quality diamonds have been found in several alluvial deposits across central and southern Borneo. Borneo has been a known source of diamonds for centuries, but the location of their primary igneous source remains enigmatic.
Atkinson   +112 more
core   +2 more sources

Characteristics of the Deep Structure of the Kimberlite-Controlling Faults of the Arkhangelsk Diamondiferous Province According to the Microseismic Sounding Method. Review

open access: yesRussian Journal of Earth Sciences
Prospecting for kimberlite pipes can be challenging due to their small size in plan. One potential solution to this problem is to search for kimberlite-controlling faults.
Danilov Konstantin
doaj   +1 more source

Review of South African research on volcanic and related rocks and mantle-derived materials : 1999-2002 [PDF]

open access: yes, 2003
This report reviews South African research relating to the scientific interests of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) and which was published between 1999 and 2002.
Marsh, J S
core   +1 more source

The Kaapvaal craton seismic anisotropy: Petrophysical analyses of upper mantle kimberlite nodules

open access: yes, 2001
International audienceA dense network of seismic stations has been deployed on the Kaapvaal craton (South Africa) to investigate the upper mantle seismic structures. In order to bring independent petrophysical constraints, we analyze a direct sampling of
Barruol, Guilhem   +2 more
core   +3 more sources

Plume genesis of non-kimberlite diamonds

open access: yesЛитосфера, 2015
Calculations shown that a relatively low-temperature kimberlite magmas consolidated with decompression exploded on significant depth and formed pipes.
V. S. Shkodzinskiy
doaj   +2 more sources

Material aspects of kimberlite rocks productivity

open access: yesМінеральні ресурси України, 2017
Most of investigated kimberlite diatremes of the Siberian platform represent multiphase pipes. Each magmatic phase of intrusion, formed inside diatremes, is composed by kimberlites with specific petrographic and petrochemical type possessing a number of ...
M. M. Zinchuk
doaj  

Cretaceous fossils from the Orapa Diamond Mine [PDF]

open access: yes, 1997
Main articleThe Orapa kimberlite pipe, situated in north-central Botswana, is well-known for its rich reserves of diamonds. It is indeed one of the largest and richest diamond mines in the world.
Bamford, M. K.   +6 more
core  

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