Results 51 to 60 of about 366 (172)
Current trends of improving the efficiency of froth separation of diamond-bearing kimberlites
Горные науки и технологииAlong with the introduction of new froth separation sections at new and existing enterprises, the basis for increasing the output of small diamonds is the reduction of their losses at the existing froth separation sections.
Valery V. Morozov +4 more
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar +6 more
wiley +1 more source
Combustion and Pyrolysis EA‐IRMS Techniques to Determine the δ2H of Diamonds
Rapid Communications in Mass Spectrometry, Volume 40, Issue 10, 30 May 2026.ABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
François Fourel +4 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.Abstract The voluminous active volcanoes of the Revillagigedo Islands of Socorro and San Benedicto in the east Pacific Ocean exhibit hotspot geochemistry. However, the presence of a deep mantle plume has not been seismologically confirmed. Instead, a fossil subducted slab is identified in the lower mantle underneath the volcanoes. Moreover, the islands
Janne M. Koornneef +7 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2011 The crystallization ages and the Sr and Nd isotopic compositions of groundmass perovskite from a well‐established, SE trending, Triassic‐Jurassic corridor of kimberlite magmatism in central and eastern North America were determined to investigate the ...
S. E. Zurevinski +2 more
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Известия высших учебных заведений: Геология и разведка, 2016 Clarification of terrigeneous-carbonate red-colored rocks of Cambrian was researched in Nakyn ore field of Yakutian diamonditerous province. The study was provided by the core data of prospecting and exploration holes, which drilled near and through ...
P. A. Ignatov +3 more
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Yankuang ceshi, 2013 The garnets in the kimberlites of the Wafangdian diamond mining area from Liaoning province have previously been identified as pyrope. In order to define the types of the complicated color garnets in Wafangdian, a systematic sampling and analysis of the ...
CHI Guang-cheng +6 more
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Технічна інженеріяThe article discusses the use of geographic information systems in the study of kimberlite deposits in order to establish diamondiferous content based on indicator minerals, in particular olivine.
N.V. Zuievska +3 more
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About primary diamondiferousness of ancient platforms
Мінеральні ресурси України, 2016 As a result of carried out research and summary of the materials on specific features of diamonds, on the example of the Siberian platform, conclusions were made that indications exist at all levels of their location: from kimberlite – provinces, sub ...
M. M. Zinchuk, V. I. Koptil
doaj
Геофизический журнал, 2012 Characteristic of density distribution along latitudinal fault zones and estimated profiles has been given. Possibility has been found of north-south inclination of each of latitudinal fault zones.
V. I. Starostenko +4 more
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