Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Magmatic–Hydrothermal Origin of Fe-Mn Deposits in the Lesser Khingan Range (Russian Far East): Petrographic, Mineralogical and Geochemical Evidence. / Berdnikov, Nikolai; Kepezhinskas, Pavel; Nevstruev, Victor; Krutikova, Valeria; Konovalova, Natalia; Savatenkov, Valery.
в: Minerals, Том 13, № 11, 1366, 26.10.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Magmatic–Hydrothermal Origin of Fe-Mn Deposits in the Lesser Khingan Range (Russian Far East): Petrographic, Mineralogical and Geochemical Evidence
AU - Berdnikov, Nikolai
AU - Kepezhinskas, Pavel
AU - Nevstruev, Victor
AU - Krutikova, Valeria
AU - Konovalova, Natalia
AU - Savatenkov, Valery
PY - 2023/10/26
Y1 - 2023/10/26
N2 - Iron and iron–manganese deposits form three closely spaced clusters within the Lesser Khingan Range of the Russian Far East. Fe-Mn mineralization is hosted in Vendian–Cambrian carbonates and composed of magnetite, hematite, braunite, haussmanite, rhodochrosite and pyrolusite. The iron–manganese ores are closely associated with explosive intermediate–felsic breccias, magnetite-rich lavas, dolerites and mineralized lithocrystalloclastic tuffs. Magmatic rocks displayboth concordant and discordant relationships with Fe-Mn mineralization and contain abundant xenoliths of host carbonates. Both magmatic rocks (with the exception of Nb-enriched dolerites) andFe-Mn ores are characterized by variable enrichments in large-ion lithophile and light rare earthelements and strong depletions in high-field strength elements compatible with the broad subductionsetting for explosive volcanism and associated hydrothermal Fe-Mn ore mineralization. Nd-Sr isotope systematics suggest contamination by both ancient and juvenile continental crust and the involvement of recycled pelagic sediment in the formation of Fe-Mn deposits in the Lesser Khingan Range of the Russian Far East.
AB - Iron and iron–manganese deposits form three closely spaced clusters within the Lesser Khingan Range of the Russian Far East. Fe-Mn mineralization is hosted in Vendian–Cambrian carbonates and composed of magnetite, hematite, braunite, haussmanite, rhodochrosite and pyrolusite. The iron–manganese ores are closely associated with explosive intermediate–felsic breccias, magnetite-rich lavas, dolerites and mineralized lithocrystalloclastic tuffs. Magmatic rocks displayboth concordant and discordant relationships with Fe-Mn mineralization and contain abundant xenoliths of host carbonates. Both magmatic rocks (with the exception of Nb-enriched dolerites) andFe-Mn ores are characterized by variable enrichments in large-ion lithophile and light rare earthelements and strong depletions in high-field strength elements compatible with the broad subductionsetting for explosive volcanism and associated hydrothermal Fe-Mn ore mineralization. Nd-Sr isotope systematics suggest contamination by both ancient and juvenile continental crust and the involvement of recycled pelagic sediment in the formation of Fe-Mn deposits in the Lesser Khingan Range of the Russian Far East.
U2 - 10.3390/min13111366
DO - 10.3390/min13111366
M3 - Article
VL - 13
JO - Minerals
JF - Minerals
SN - 2075-163X
IS - 11
M1 - 1366
ER -
ID: 118341016