The First Find of Oxyborates in Rocks of the Norilsk-1 Intrusion (Northwestern Siberian Platform)

Autor:	N. S. Karmanov, M. P. Gora, V. M. Kalugin, A. Ya. Shevko
Rok vydání:	2019
Předmět:	Recrystallization (geology) Olivine 010504 meteorology & atmospheric sciences Geochemistry chemistry.chemical_element engineering.material 010502 geochemistry & geophysics 01 natural sciences Intrusion chemistry Earth and Planetary Sciences (miscellaneous) engineering General Earth and Planetary Sciences Prospecting Contact zone Boron Ludwigite Geology 0105 earth and related environmental sciences
Zdroj:	Doklady Earth Sciences. 488:1100-1102
ISSN:	1531-8354 1028-334X
DOI:	10.1134/s1028334x19090204
Popis:	In the taxitic gabbro-dolerites of the upper contact zone of the Norilsk-1 intrusion, five boron minerals were found: kotoite Mg3(BO3)2, suanite Mg2B2O5, warwickite (Mg,Ti,Fe,Cr,Al)2O(BO3), ludwigite (Mg)2Fe3+O2(BO3), and azoproite (Mg,Fe2+)2(Fe3+,Ti,Mg)O2(BO3). This is the first find of oxyborates in the rocks of the Norilsk ore-bearing intrusions and in the Norilsk province as a whole. Oxyborates occur as inclusions in olivine in the recrystallization zones of taxitic gabbro-dolerites. This indicates that they formed at the late-magmatic or postmagmatic stage as result of the interaction between rocks and boron-bearing fluids associated with an ore-bearing intrusion. Microinclusions of boron minerals could be the cause of elevated concentrations of boron in the rocks. This is a characteristic feature of Norilsk PGE–Cu–Ni-bearing intrusions that can be used as a prospecting criterion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::22f1c8d2de800fa3d5db8a19d1b4cc8c https://doi.org/10.1134/s1028334x19090204 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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