Results 31 to 40 of about 2,766 (215)
Kimberlites from Source to Surface: Insights from Experiments
, 2020 High-pressure experiments are unconvincing in explaining kimberlites as direct melts of carbonated peridotite because the appropriate minerals do not coexist stably at the kimberlite liquidus.
Foley, Stephen +2 more
core +1 more source
Oxide minerals of Kaavi kimberlites (Finland)
Известия высших учебных заведений: Геология и разведка, 2019 The mineralogical and petrogeochemical features of the Neoproterozoic kimberlite rocks of the Lahtojoki and Niilonsuo pipes of the Kaavi cluster (Kaavi-Kuopio, Finland) have been studied, differences in their petrogeochemical composition, quantitative ...
N. S. Azarova +4 more
doaj +1 more source
Attrition in the kimberlite system [PDF]
Mineralogy and Petrology, 2018 The sustained transportation of particles in a suspension commonly results in particle attrition leading to grain size reduction and shape modification. Particle attrition is a well-studied phenomenon that has mainly focussed on sediments produced in aeolian or fluvial environments. Here, we present analogue experiments designed to explore processes of
Jones, T.J., Russell, J.K.
openaire +4 more sources
, 2004 Proterozoic mafic potassic and ultrapotassic igneous rocks emplaced in the Cuddapah Basin and Dharwar Craton of the southern Indian shield are among the earliest recorded on Earth.
Rao, Chalapathi N. V.
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Геодинамика и тектонофизика, 2016 The paper presents the results of comprehensive study of the primary diamond deposit of the Nyurbinskaya pipe in the Yakutian diamondiferous province. It is established, that the pipe is confined to the fault junction of four directions and is composed ...
A. S. Gladkov +6 more
doaj +1 more source
Identifying critical parameters in the settling of African kimberlites [PDF]
, 2017 Kimberlite is the host rock of diamonds and varies widely in geological and mineralogical features as well as color, processing capability, and dewatering characteristics. This study investigated the dewatering behavior of problematic Angolan kimberlites.
Boshoff, E.T. (Theodor) +5 more
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Известия высших учебных заведений: Геология и разведка, 2019 The new data on the composition of kimberlite indicator minerals (KIM) — pyropes and picroilmenites — of the first kimberlite body T-54-14, opened in 2015 in the Syuldyukar kimberlite field by the geologists of ALROSA PJSC, during the verification of the
T. S. Starkova +2 more
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Brazilian Journal of Geology, 2020 Oxygen fugacity (ƒO2) conditions were established for Três Ranchos IV (TR-IV, diamond-bearing) and Limeira I (LM-I, barren) kimberlite intrusions, in Alto Paranaíba Alkaline Province, to constrain a possible correlation between fO2 and diamond ...
Bruna Coldebella +4 more
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Induced polarization of volcanic rocks. Part 7. Kimberlites
, 2023 International audienceIn the field, kimberlites are characterized by high electrical conductivities (about 0.1 S m-1) compared to most igneous rocks. The reason for these high conductivities has not been fully elucidated to date.
Abramov, V +3 more
core +1 more source
Геодинамика и тектонофизика, 2015 The publication is devoted to the role of Mikhail M. Odintsov, Corresponding Member of the USSR Academy of Sciences, and his scientific school in solution of fundamental problems related to regularities of occurrence of endogenic mineral resources at ...
Konstantin N. Egorov
doaj +1 more source