Mantle xenoliths from Komsomolskaya kimberlite pipe, Yakutia: Multistage metasomatism
Geosystems and GeoenvironmentMinerals from > 200 mantle xenoliths from Komsomolskaya kimberlite pipe were studied by electron microprobe and LA-ICP-MS. They are metasomatised garnet and spinel peridotites containing phlogopite, amphibole and ilmenite with garnets (up to 12.5 wt% Cr2O3) and clinopyroxenes (up to 5 wt% Na2O) or rarer Fe-pyroxenites and A, B, C eclogites ...
Igor V. Ashchepkov +8 more
openaire +2 more sources
Geochimica Brasiliensis, 2018 Trends in a concentration of selected trace elements in residual soils on four known diamondiferous kimberlite pipes (3, 4, 8 and 9) occurring at Lattavaram within the Wajrakarur Kimberlite Field (WKF) is attempted for the first time.
Rameshchandra Phani Pothuri
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ABOUT LITHOMINERALOGICAL COMPOSITION OF ANCIENT SEDIMENTARY DIAMONDIFEROUS ROCKS
Известия высших учебных заведений: Геология и разведка, 2018 Litho-mineralogical and structural-formation generation features of Upper Devonian-Carboniferous crusts of weathering on terrigenous-carbonate rocks, kimberlites and deposits enriched by products of their redeposition, have been studied, that allowed ...
N. N. Zinchuk
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Noble gases in diamonds: Occurrences of solarlike helium and neon [PDF]
, 1987 We have measured noble gases in 17 diamond samples, mostly inclusion free, from diverse, known locations. The ^3He/^4He ratios are characterized by a large spread (10^4), ranging from values below atmospheric to close to the solar ratio.
Epstein, S. +3 more
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An ion microprobe U-Th-Pb study of zircon xenocrysts from the Lahtojoki kimberlite pipe, eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 2001 Eleven relatively large (diameter 1–2 mm) zircon grains extracted from the Lahtojoki kimberlite pipe (Eastern Finland Kimberlite Province) have been analysed by the ion microprobe NORDSIM for their U- and Pb- isotopic composition.
P. Peltonen, I. Mänttäri
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Specific features of kimberlites of Mirny field (Sibirian platform)
Известия высших учебных заведений: Геология и разведка, 2019 Results of comparative complex investigation are provided for diamonds from primary bodies of Mirny kimberlite field, among which three groups are distinguished sharply differing by typomorphic features of crystals, related with three separated in time ...
N. N. Zinchuk, V. I. Koptil
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Use of gamma-ray spectrometry for identifying weakly magnetic diamondiferous kimberlites [PDF]
, 2016 Diamondiferous kimberlites are the most important source of bedrock diamond deposits. The goal of the study is to analyze the use of gamma-ray spectrometry techniques to explore weakly magnetic diamondiferous kimberlites.
Ledengskiy, R. A.
core
The role of substrate hydrogeology and surface hydrology in the construction of phreatomagmatic volcanoes on an active monogenetic field (Auckland, New Zealand) : a thesis presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Earth Science at Massey University, Palmerston North, New Zealand [PDF]
, 2015 Material removed for copyright reasons (appendices B, D and E): Agustín-Flores, J., Németh K., Cronin, S., Lindsay, J., Kereszturi, G., Brand, B., & Smith, I.E.M. (2014).
Agustín Flores, Javier
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Rare earth element characteristics of pyrope garnets from the Kaavi-Kuopio kimberlites - implications for mantle metasomatism [PDF]
Bulletin of the Geological Society of Finland, 2005 Peridotitic garnet xenocrysts from five kimberlite pipes in the Kaavi-Kuopio area of eastern Finland have been studied using major and trace element geochemistry to obtain information on the stratigraphy, compositional variability and evolutionary ...
M. Lehtonen
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Геодинамика и тектонофизика, 2015 This article provides basic information about Mikhail M. Odintsov (1911–2011), Corresponding Member of the USSR Academy of Sciences, and his scientific, organizational and social activities.
Dmitry P. Gladkochub +2 more
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