Results 21 to 30 of about 2,766 (215)
Alkaline lamprophyres from the Sokli complex, northern Finland [PDF]
Bulletin of the Geological Society of Finland, 1978 Alkaline lamprophyric dykes in the Sokli carbonatite complex closely resemble kimberlites in mineralogical and chemical composition. Mineralogically, they differ from kimberlites by the presence of high-manganese ilmenite and richterite, and the absence ...
H. Vartiainen, P. Kresten, Y. Kafkas
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Аbout use of ancient weathering crusts formation during diamond-prospecting works
Мінеральні ресурси України, 2021 Complex research of Late Devonian – Early Carboniferous and Middle-Late Triassic weathering crusts on various rocks (terrigenous-carbonate formations, dolerites, tuffs, tuffaceous formations and kimberlites) indicated that in conditions of warm and humid
M. M. Zinchuk
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The Relationship Between Kimberlitic Magmatism and Electrical Conductivity Anomalies in the Mantle
Geophysical Research Letters, 2022 Kimberlites are igneous rocks whose formation remains enigmatic due to their severely altered nature, highly variable compositions and rapid ascent through the lithosphere.
Sinan Özaydın, Kate Selway
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Journal of Asian Earth Sciences: X, 2022 Phlogopites in a suite of ultramafics from Bangladesh have been analyzed to ascertain the mineralization and the timing of cooling of phlogopites and reveal their emplacement tectonics.
Ismail Hossain +3 more
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Геодинамика и тектонофизика, 2022 Petrophysical, tectonophysical and paleomagnetic studies were done on the field of diamonds from the Komsomolskaya kimberlite pipe to interpret the observed gravimagnetic field. As a result of studying the structural-material complexes (SMC) of the field,
K. M. Konstantinov, A. S. Gladkov
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Kimberlite ascent and eruption [PDF]
Nature, 2007 Wilson and Head model kimberlite ascent and eruption by considering the propagation of a volatile-rich dyke. Wilson and Head's model has features in common with Sparks et al., but it is inconsistent with geological observations and constraints on volatile solubility. Here we show that this may be due to erroneous physical assumptions.
Sparks, RSJ +3 more
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The contribution of the TSNIGRI Diamond laboratory to the scientific treasury of Yakutia
Руды и металлы, 2022 Brief information is given on the main stages of scientific activity or the half-century history of the Research Geological Enterprise (NIGP) of PJSC ALROSA, confirming their inheritance from the initial stages of the enterprise (Diamond Laboratory ...
Alexander V. Тolstov +1 more
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Applied Sciences, 2021 In this paper, using the example of the Lomonosov diamond deposit, experimental studies of rocks were carried out to assess the main radiation and physical factors affecting the formation of the radon field over the kimberlite pipes of the Arkhangelsk ...
Evgeny Yakovlev, Andrey Puchkov
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Геодинамика 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
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Геодинамика и тектонофизика, 2022 We discuss herein the differences both in composition and structure of the lithospheric mantle of the Siberian Platform under kimberlite fields of different ages.
N. P. Pokhilenko +4 more
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