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Modeling of the formation of nonisothermal zoning in magnesian skarns in the ore-magmatic fluid systems of intrusive traps of the southern Siberian Platform. / Mazurov, M. P.; Bykova, V. G.

In: Russian Geology and Geophysics, Vol. 58, No. 5, 01.05.2017, p. 541-550.

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Mazurov MP, Bykova VG. Modeling of the formation of nonisothermal zoning in magnesian skarns in the ore-magmatic fluid systems of intrusive traps of the southern Siberian Platform. Russian Geology and Geophysics. 2017 May 1;58(5):541-550. doi: 10.1016/j.rgg.2016.10.012

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Mazurov, M. P. ; Bykova, V. G. / Modeling of the formation of nonisothermal zoning in magnesian skarns in the ore-magmatic fluid systems of intrusive traps of the southern Siberian Platform. In: Russian Geology and Geophysics. 2017 ; Vol. 58, No. 5. pp. 541-550.

BibTeX

@article{f50e593948d342f3b2a717db87f68a4f,
title = "Modeling of the formation of nonisothermal zoning in magnesian skarns in the ore-magmatic fluid systems of intrusive traps of the southern Siberian Platform",
abstract = "Using the Selector PC application, we studied the process of formation of magnesian skarns at the contact of dolerites with carbonate-salt deposits. The physicochemical parameters of metasomatic processes were estimated by studying the localization of skarn ore shoots and mineral assemblages in the deposits of the Angara-Ilim type. The action of magmatic fluids on the system dolerite-magnesian salt deposits and dolerite-carbonate-salt deposits resulted in zonal columns of infiltration magnesian skarns. The computation was carried out using a dynamic multireservoir model of a flow reactor with a constant temperature gradient and a uniform pressure. We have established that changes in the C/H ratio and Cl content in the fluid source affect the composition of the produced mineral assemblages. Depending on the temperature during the formation of skarns, different mineral assemblages are produced: diopside, enstatite, anorthite, quartz, ilmenite, hercynite, and pyrrhotite at 1040-1010 °C; monticellite, forsterite, magnetite, geikielite, periclase, spinel, calcite, and graphite at 980-740 °C; and calcite, dolomite, phlogopite, halite, and graphite at 710-380 °C. Wollastonite is observed in the rear zone of magnesian skarns. We examined the temperature-dependent sequence of formation of different types of silicates, spinels, and Ti-containing minerals in the metasomatic column. The computation results show that during crystallization, the tholeiitic magma releases a fluid phase with C/H = 0.1-1.0, amounting to 1.5-2.0 wt.%.",
keywords = "dolerites, magnesian skarns, metasomatism, numerical modeling, CONTACTS, SEDIMENTARY COVER, DOLERITE, ROCK-SALT",
author = "Mazurov, {M. P.} and Bykova, {V. G.}",
year = "2017",
month = may,
day = "1",
doi = "10.1016/j.rgg.2016.10.012",
language = "English",
volume = "58",
pages = "541--550",
journal = "Russian Geology and Geophysics",
issn = "1068-7971",
publisher = "Elsevier Science B.V.",
number = "5",

}

RIS

TY - JOUR

T1 - Modeling of the formation of nonisothermal zoning in magnesian skarns in the ore-magmatic fluid systems of intrusive traps of the southern Siberian Platform

AU - Mazurov, M. P.

AU - Bykova, V. G.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Using the Selector PC application, we studied the process of formation of magnesian skarns at the contact of dolerites with carbonate-salt deposits. The physicochemical parameters of metasomatic processes were estimated by studying the localization of skarn ore shoots and mineral assemblages in the deposits of the Angara-Ilim type. The action of magmatic fluids on the system dolerite-magnesian salt deposits and dolerite-carbonate-salt deposits resulted in zonal columns of infiltration magnesian skarns. The computation was carried out using a dynamic multireservoir model of a flow reactor with a constant temperature gradient and a uniform pressure. We have established that changes in the C/H ratio and Cl content in the fluid source affect the composition of the produced mineral assemblages. Depending on the temperature during the formation of skarns, different mineral assemblages are produced: diopside, enstatite, anorthite, quartz, ilmenite, hercynite, and pyrrhotite at 1040-1010 °C; monticellite, forsterite, magnetite, geikielite, periclase, spinel, calcite, and graphite at 980-740 °C; and calcite, dolomite, phlogopite, halite, and graphite at 710-380 °C. Wollastonite is observed in the rear zone of magnesian skarns. We examined the temperature-dependent sequence of formation of different types of silicates, spinels, and Ti-containing minerals in the metasomatic column. The computation results show that during crystallization, the tholeiitic magma releases a fluid phase with C/H = 0.1-1.0, amounting to 1.5-2.0 wt.%.

AB - Using the Selector PC application, we studied the process of formation of magnesian skarns at the contact of dolerites with carbonate-salt deposits. The physicochemical parameters of metasomatic processes were estimated by studying the localization of skarn ore shoots and mineral assemblages in the deposits of the Angara-Ilim type. The action of magmatic fluids on the system dolerite-magnesian salt deposits and dolerite-carbonate-salt deposits resulted in zonal columns of infiltration magnesian skarns. The computation was carried out using a dynamic multireservoir model of a flow reactor with a constant temperature gradient and a uniform pressure. We have established that changes in the C/H ratio and Cl content in the fluid source affect the composition of the produced mineral assemblages. Depending on the temperature during the formation of skarns, different mineral assemblages are produced: diopside, enstatite, anorthite, quartz, ilmenite, hercynite, and pyrrhotite at 1040-1010 °C; monticellite, forsterite, magnetite, geikielite, periclase, spinel, calcite, and graphite at 980-740 °C; and calcite, dolomite, phlogopite, halite, and graphite at 710-380 °C. Wollastonite is observed in the rear zone of magnesian skarns. We examined the temperature-dependent sequence of formation of different types of silicates, spinels, and Ti-containing minerals in the metasomatic column. The computation results show that during crystallization, the tholeiitic magma releases a fluid phase with C/H = 0.1-1.0, amounting to 1.5-2.0 wt.%.

KW - dolerites

KW - magnesian skarns

KW - metasomatism

KW - numerical modeling

KW - CONTACTS

KW - SEDIMENTARY COVER

KW - DOLERITE

KW - ROCK-SALT

UR - http://www.scopus.com/inward/record.url?scp=85019193377&partnerID=8YFLogxK

U2 - 10.1016/j.rgg.2016.10.012

DO - 10.1016/j.rgg.2016.10.012

M3 - Article

AN - SCOPUS:85019193377

VL - 58

SP - 541

EP - 550

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 5

ER -

ID: 10192542