Results 11 to 20 of about 10,376 (220)

IDENTIFICATION OF POTENTIAL ZONES FOR KIMBERLITE EXPLORATION – AN EARTH OBSERVATION APPROACH [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In the present study, we have prepared the thematic evidence layers for identifying the potential zones of kimberlite emplacement in parts of Chhatarpur district, Madhya Pradesh.
A. Guha   +9 more
doaj   +1 more source

Application of Tagged Neutron Method for Detecting Diamonds in Kimberlite

open access: yesInstruments, 2020
The results of testing a prototype of a separator for detecting diamonds in kimberlite ore using tagged neutron method are discussed. Kimberlite ore was irradiated with fast tagged neutrons with an energy of 14.1 MeV.
Yury Rogov   +3 more
doaj   +1 more source

ALKALI-CONTAINING MINERALS WITHIN MELT INCLUSIONS IN OLIVINE OF MANTLE XENOLITHS FROM BULTFONTEIN KIMBERLITE PIPE (KAAPVAAL CRATON): EVIDENCE ON HIGH CONCENTRATIONS OF ALKALIS IN KIMBERLITE MELTS

open access: yesГеодинамика и тектонофизика, 2022
The study reports the mineral assemblage of the crystallized secondary melt inclusions in the olivine of sheared peridotites xenoliths from Bultfontein kimberlite pipe (Kaapvaal Craton, South Africa).
A. A. Tarasov   +2 more
doaj   +1 more source

Comparative characteristics of diamonds from areas with a high density of kimberlite bodies

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2023
Background. This paper presents a comparative study into diamonds from kimberlite bodies of the Verkhnemunsky field (Zapolyarnaya, Novinka, Komsomolskaya-Magnitnaya and Poiskovaya), the results of which allow these minerals to be distinguished from those
N. N. Zinchuk, V. I. Koptil
doaj   +1 more source

Useful publication

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2022
This article provides a review of the book co-authored by P.A. Ignatov and K.V. Novikov entitled “Field diagnostics of tectonic disturbances and fluid-fracturing formations in kimberlite-containing deposits of the lower Paleozoic” (Mirny: ALROSA, 2019 ...
A. I. Kudryashov
doaj   +1 more source

The transition zone as a host for recycled volatiles: Evidence from nitrogen and carbon isotopes in ultra-deep diamonds from Monastery and Jagersfontein (South Africa) [PDF]

open access: yes, 2017
Sublithospheric (ultra-deep) diamonds provide a unique window into the deepest parts of Earth's mantle, which otherwise remain inaccessible. Here, we report the first combined C- and N-isotopic data for diamonds from the Monastery and Jagersfontein ...
Gurney, J.J.   +6 more
core   +1 more source

Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: a review [PDF]

open access: yes, 2005
Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Balaganskaya, E.   +4 more
core   +1 more source

Conducting lithospheric heterogeneities as a criterion of predictive assessment for promising diamond areas (on the example of Siberian kimberlite province)

open access: yesЗаписки Горного института, 2017
Results of magnetotelluric tests, carried out in Siberian kimberlite province, are examined from the viewpoint of structural control over location of kimberlite fields and bunches of kimberlite pipes.
E. V. Pospeeva
doaj   +1 more source

Diamonds from low-grade kimberlite

open access: yesРуды и металлы, 2022
Based on exploration and sampling work on the Siberian platform (SP) the uneven diamond content of various diatremes was established. During the exploration apart from the pipes with high or medium content of a useful component also the diatremes with ...
Nikolay N. Zinchuk   +1 more
doaj   +1 more source

Archaean and Proterozoic diamond growth from contrasting styles of large-scale magmatism [PDF]

open access: yes, 2017
Precise dating of diamond growth is required to understand the interior workings of the early Earth and the deep carbon cycle. Here we report Sm-Nd isotope data from 26 individual garnet inclusions from 26 harzburgitic diamonds from Venetia, South Africa.
Chinn, Ingrid L.   +5 more
core   +3 more sources

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