Results 1 to 10 of about 1,332 (160)
Emplacement of the Argyle diamond deposit into an ancient rift zone triggered by supercontinent breakup [PDF]
Nature Communications, 2023 Argyle is the world’s largest source of natural diamonds, yet one of only a few economic deposits hosted in a Paleoproterozoic orogen. The geodynamic triggers responsible for its alkaline ultramafic volcanic host are unknown. Here we show, using U-Pb and
Hugo K. H. Olierook +14 more
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Mineral chemistry from the Alfeu-I lamproite (Southern Brazil) and its contribution to understand the mantle heterogeneity under South American Plate during the Gondwana breakup [PDF]
Brazilian Journal of Geology, 2023 The Alfeu-I lamproite is one of the few alkaline rock occurrences in the South of Brazil that represents the alkaline event related to the South Atlantic opening and the enormous magmatic activity that formed the Paraná basalts.
Larissa Colombo Carniel +7 more
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Geosciences, 2021 Dynamic metasomatism experiments were performed by reacting a lamproite melt with garnet peridotite by drawing melt through the peridotite into a vitreous carbon melt trap, ensuring the flow of melt through the peridotite and facilitating analysis of the
Stephen F. Foley, Maik Pertermann
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Criteries and prospects of diamonds of the Vitebsk granulite massif
Журнал Белорусского государственного университета: География, геология, 2021 The article describes the history of studying the diamond content of tectonic structures of the territory of Belarus. Based on the results of magnetometric, mineralogical, tectonic studies carried out by industrial geologists and scientists over the past
Victor S. Konishchev +1 more
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Prospecting models of primary diamond deposits of the north of the East European Platform
Записки Горного института, 2022 As a result of a comprehensive study of the geological structure and diamond presense of the northern part of the East European Platform, generalization of the data accumulated by various organizations in the USSR, the Russian Federation, and other ...
Victor N. Ustinov +2 more
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Isotopic ages of Lentiira - Kuhmo - Kostomuksha olivine lamproite - Group II kimberlites [PDF]
Bulletin of the Geological Society of Finland, 2007 The Lentiira-Kuhmo-Kostomuksha triangle, along the Finland – Russian border and within the central part of the Archean Karelian craton, contains numerous examples of phlogopite-rich, ultramafic, mantle-xenocryst-bearing and, in some cases, diamond ...
H. O'Brien, D. Phillips, R. Spencer
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Brazilian Journal of Geology, 2022 The mineral chemistry of diamond indicator minerals is used to trace mineralizations in primary rocks such as lamproites/kimberlites and in secondary deposits.
Ana Carolina Batista Vieira +3 more
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Frontiers in Earth Science, 2022 The Karavansalija Mineralized Center (KMC) with its Au–Cu skarn mineralization associated with the Rogozna Mountains magmatic suite in southwestern Serbia belongs to the Oligocene Serbo-Macedonian magmatic and metallogenic belt (SMM-MB).
J. Hoerler +6 more
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STREAM SEDIMENT CARTOGRAPHY OF KIMBERLITE OCCURRENCES IN KIMPANGU AND ITS SURROUNDINGS (CENTRAL KONGO, DEMOCRATIC REPUBLIC OF THE CONGO) USING GEOCHEMICAL SIGNATURES OF HEAVY MINERALS [PDF]
Geological BehaviorMicroscopic analysis and interpretation of the geochemical signatures of heavy minerals collected during stream sediment execution in the Kimpangu agglomeration and surrounding area have revealed the existence of four mineralogical families: ilmenites ...
Christian MUPER +3 more
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Geochemistry, Geophysics, Geosystems, 2022 Despite the scientific and economic significance of kimberlites and related magmas, their origin is unclear. Here, we address this issue using whole‐rock and perovskite‐derived Sr‐Nd‐Hf isotopes for the three occurrences of kimberlite, lamproites and ...
Hayden Dalton +7 more
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