Mafic and salic igneous xenoliths in Late Tertiary alkaline basalts: Fluid inclusion and mineralogical evidence for a deep-crustal magmatic reservoir in the Western Carpathians

1996 ◽  
Vol 8 (5) ◽  
pp. 901-916 ◽  
Author(s):  
Monika Huraiová ◽  
Patrik Konecny ◽  
Klaus Simon ◽  
Vratislav Hurai
Keyword(s):  
Fluid Inclusion ◽  
Western Carpathians ◽  
Late Tertiary ◽  
Magmatic Reservoir ◽  
Mineralogical Evidence

Late Tertiary paleogeographic evolution of the Western Carpathians

1993 ◽  
Vol 226 (1-4) ◽  
pp. 401-415 ◽  
Author(s):  
Michal Kováč ◽  
András Nagymarosy ◽  
Ján Soták ◽  
Katarína Šutovská
Keyword(s):  
Western Carpathians ◽  
Late Tertiary

scholarly journals REE Minerals as Geochemical Proxies of Late-Tertiary Alkalic Silicate ± Carbonatite Intrusions Beneath Carpathian Back-Arc Basin

Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 369
Author(s):  
Vratislav Hurai ◽  
Monika Huraiová ◽  
Patrik Konečný
Keyword(s):  
Basaltic Magma ◽  
Accessory Mineral ◽  
Rock Fragments ◽  
Rock Types ◽  
Volcanic Reservoir ◽  
Late Tertiary ◽  
Volcanic Ejecta ◽  
Intermediate Rock ◽  
Magmatic Reservoir ◽  
Back Arc

The accessory mineral assemblage (AMA) of igneous cumulate xenoliths in volcanoclastic deposits and lava flows in the Carpathian back-arc basin testifies to the composition of intrusive complexes sampled by Upper Miocene-Pliocene basalt volcanoes. The magmatic reservoir beneath Pinciná maar is composed of gabbro, moderately alkalic to alkali-calcic syenite, and calcic orthopyroxene granite (pincinite). The intrusive complex beneath the wider area around Fiľakovo and Hajnáčka maars contains mafic cumulates, alkalic syenite, carbonatite, and calc-alkalic granite. Both reservoirs originated during the basaltic magma underplating, differentiation, and interaction with the surrounding mantle and crust. The AMA of syenites is characterized by yttrialite-Y, britholite-Y, britholite-Ce, chevkinite-Ce, monazite-Ce, and rhabdophane(?). Baddeleyite and REE-zirconolite are typical of alkalic syenite associated with carbonatite. Pyrochlore, columbite-Mn, and Ca-niobates occur in calc-alkalic granites with strong peralkalic affinity. Nb-rutile, niobian ilmenite, and fergusonite-Y are crystallized from mildly alkalic syenite and calc-alkalic granite. Zircons with increased Hf/Zr and Th/U ratios occur in all felsic-to-intermediate rock-types. If rock fragments are absent in the volcanic ejecta, the composition of the sub-volcanic reservoir can be reconstructed from the specific AMA and zircon xenocrysts–xenolith relics disintegrated during the basaltic magma fragmentation and explosion.

Fluid inclusion and stable C-O isotope constraints on the origin of metasomatic magnesite deposits of the Western Carpathians, Slovakia

2011 ◽  
Vol 52 (11) ◽  
pp. 1474-1490 ◽  
Author(s):  
V. Hurai ◽  
M. Huraiová ◽  
P. Koděra ◽  
W. Prochaska ◽  
A. Vozárová ◽  
...  
Keyword(s):  
Fluid Inclusion ◽  
Western Carpathians ◽  
O Isotope

scholarly journals Geology, Mineralogy, Fluid Inclusion, and H–O–S–Pb Isotope Constraints on Ore Genesis of the Keyue Sb–Pb–Zn–Ag Deposit in Southern Tibet

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-32 ◽  
Author(s):  
Da Wang ◽  
Youye Zheng ◽  
Wantao Yang ◽  
Ngawang Gyatso
Keyword(s):  
Fluid Inclusion ◽  
Pb Isotope ◽  
Southern Tibet ◽  
Ore Formation ◽  
The North ◽  
Metallogenic Belt ◽  
Crustal Contribution ◽  
Stage 1 ◽  
Different Characteristics ◽  
Mineralogical Evidence

The Keyue deposit is a medium-sized deposit similar to the Zhaxikang deposit within the North Himalayan Metallogenic Belt (NHMB). The ore formation can be divided into Pb–Zn mineralization (stages 1 and 2), Sb–Ag mineralization (stages 3 and 4), and Sb–Hg mineralization (stages 5 and 6). The fluid inclusion data show that the first two pulses of mineralization have different characteristics, but both belong to the epithermal category (stage 2: 172.9~277.2°C, 7.4~17.0 wt% NaCl eq.; stages 3 and 4: 142.1~321.0°C, 2.7~17.96 wt% NaCl eq.). The H–O isotopic compositions of stages 3 and 4 quartz (δDV-SMOW: –174‰~−120‰, δ18OH2O: 1.59‰~11.34‰) are similar to those of stages 3 and 4 minerals (δDV-SMOW: –165‰~−150‰, δ18OH2O: 6.14‰~13.03‰), whereas they are different from stage 1 and 2 (δDV-SMOW: –108.3‰~−103.6‰, δ18OH2O: 1.92‰~3.82‰) and stage 5 and 6 (δDV-SMOW: –165‰~−138‰, δ18OH2O: −12.91‰~0.82‰) minerals from the Zhaxikang deposit. Additionally, stage 2 sulfides have δ34S values of 5.4‰~11.2‰ that are similar to stage 2 sulfides in the Zhaxikang deposit (7.8‰~12.2‰), and these δ34S values overlap those of many SEDEX-type deposits. The δ34S values also show a decreasing trend from stage 2 through stages 3 and 4 to stage 5 in Keyue and Zhaxikang deposits, which may relate to the overprint by later mineralization events. The Pb isotopic data (206Pb/204Pb: 18.530~19.780, 207Pb/204Pb: 15.674~15.939, and 208Pb/204Pb: 38.618~40.559) show a significant crustal contribution. However, the minerals from different pulses of mineralization also exhibit slightly different Pb isotopic characteristics. These inferences from fluid inclusions and isotope are also demonstrated by geological and mineralogical evidence. Overall, the Keyue deposit is an epithermal deposit and has mainly experienced three pulses of mineralization.

Fluid inclusion study in the Huanuni mine, Bolivia.

1989 ◽  
Vol 105 (14) ◽  
pp. 1073-1078 ◽  
Author(s):  
Osvaldo ARCE ◽  
Masateru NAMBU
Keyword(s):  
Fluid Inclusion ◽  
Fluid Inclusion Study ◽  
Inclusion Study
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