P–T-Fluid evolution and graphite deposition during retrograde metamorphism in Ribeira Fold Belt, SE Brazil: Oxygen fugacity, fluid inclusions and C–O–H isotopic evidence

2011 ◽  
Vol 31 (1) ◽  
pp. 93-109 ◽  
Author(s):  
Telmo M. Bento dos Santos ◽  
José M.U. Munhá ◽  
Colombo C.G. Tassinari ◽  
Fernando M. Noronha ◽  
Alexandra Guedes ◽  
...  
Keyword(s):  
Oxygen Fugacity ◽  
Fluid Inclusions ◽  
Retrograde Metamorphism ◽  
Fold Belt ◽  
Isotopic Evidence ◽  
Fluid Evolution ◽  
Se Brazil ◽  
Graphite Deposition

scholarly journals FLUID EVOLUTION AND GOLD DEPOSITION AT THE CUIABÁ MINE, SE BRAZIL: FLUID INCLUSIONS AND STABLE ISOTOPE GEOCHEMISTRY OF CARBONATES

2000 ◽  
Vol 30 (2) ◽  
pp. 337-341 ◽  
Author(s):  
ROBERTO PEREZ XAVIER ◽  
CATARINA LABOURÉ BENFICA TOLEDO ◽  
BRUCE TAYLOR ◽  
ALFONSO SCHRANK
Keyword(s):  
Stable Isotope ◽  
Fluid Inclusions ◽  
Isotope Geochemistry ◽  
Gold Deposition ◽  
Stable Isotope Geochemistry ◽  
Fluid Evolution ◽  
Se Brazil

Oxygen fugacity during tin ore deposition from primary fluid inclusions in cassiterite

2021 ◽  
pp. 104451
Author(s):  
Christian Schmidt ◽  
Matthias Gottschalk ◽  
Rongqing Zhang ◽  
Jianjun Lu
Keyword(s):  
Oxygen Fugacity ◽  
Fluid Inclusions ◽  
Primary Fluid ◽  
Ore Deposition

Fluid evolution of the Jiawula Ag–Pb–Zn deposit, Inner Mongolia: mineralogical, fluid inclusion, and stable isotopic evidence

2012 ◽  
Vol 55 (2) ◽  
pp. 204-224 ◽  
Author(s):  
De-Gao Zhai ◽  
Jia-Jun Liu ◽  
Jian-Ping Wang ◽  
Mei-Juan Yao ◽  
Sheng-Hua Wu ◽  
...  
Keyword(s):  
Fluid Inclusion ◽  
Inner Mongolia ◽  
Isotopic Evidence ◽  
Fluid Evolution ◽  
Stable Isotopic

scholarly journals Fluid Evolution of Fuzishan Skarn Cu-Mo Deposit from the Edong District in the Middle-Lower Yangtze River Metallogenic Belt of China: Evidence from Petrography, Mineral Assemblages, and Fluid Inclusions

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-25
Author(s):  
Lu Zhang ◽  
Shao-Yong Jiang ◽  
Suo-Fei Xiong ◽  
Deng-Fei Duan
Keyword(s):  
Fluid Inclusion ◽  
Fluid Inclusions ◽  
Yangtze River ◽  
Homogenization Temperature ◽  
Lithostatic Pressure ◽  
Lower Permian ◽  
Fluid Evolution ◽  
Metallogenic Belt ◽  
Lower Yangtze ◽  
Vapor Liquid

The Fuzishan Cu-Mo deposit is located in the Edong district of the Middle-Lower Yangtze River Metallogenic Belt, China. The orebodies mainly occurred as lenticular and bedded shapes in the skarn zone between the Lower Permian Qixia Formation carbonate rocks and the quartz diorite. Four paragenetic stages have been recognized based on petrographic observations: (1) prograde skarn stage, (2) retrograde skarn stage, (3) quartz-sulfide stage, and (4) carbonate stage. Six fluid inclusion types were recognized: S1(vapor + liquid + halite ± other daughter minerals), S2(vapor + liquid + daughter minerals except halite), LV(rich liquid + vapor), VL(rich vapor + liquid), V (vapor), and L (liquid) types. Fluid inclusion studies show distinct variations in composition, final homogenization temperature, and salinity in four stages. Daughter minerals of the primary fluid inclusions include chalcopyrite, molybdenite, hematite, anhydrite, calcite, and halite in the prograde skarn stage and hematite, calcite, and sulfide (?) in the retrograde skarn stage. No daughter minerals occurred in the quartz-sulfide and carbonate stages. Final homogenization temperatures recorded in these stages are from 405 to >550°C, from 212 to 498°C, from 150 to 485°C, and from 89 to 223°C, respectively, while salinities are from 3.7 to 42.5, from 2.6 to 18.5, from 2.2 to 17.9, and from 0.2 to 11.5 wt.% NaCl equivalent, respectively. The coexisting VLand S1type fluid inclusions show similar homogenization temperature of 550 to about 650°C in the prograde skarn stage, indicating that immiscibility occurred at lithostatic pressure of 700 bars to perhaps 1000 bars, corresponding to a depth of 2.6 km to about 3.7 km. The coeval VLand LVtypes fluid inclusions with homogenization temperature of 350 to 400°C in the late retrograde skarn and quartz-sulfide stages suggest that boiling occurred under hydrostatic pressure of 150 to 280 bars, equivalent to a depth of 1.5 to 2.8 km. Mo mineralization in the retrograde stage predated Cu mineralization which mainly occurred in the quartz-sulfide stage. Fluid compositions indicate that ore-forming fluid has highfO2and rich Cu and Mo concentration in the early stage, while relatively lowerfO2and poor Cu and Mo concentration in the middle to late stages. Microthermometric data show a decreasing trend in temperature and salinity in the fluid evolution process. Decreasing temperature and boiling event may be the main factors that control the ore precipitation.

Charging history and fluid evolution for the Carboniferous volcanic reservoirs in the western Chepaizi Uplift of Junggar Basin as determined by fluid inclusions and basin modelling

2020 ◽  
Vol 55 (4) ◽  
pp. 2591-2614 ◽  
Author(s):  
Bingbing Shi ◽  
Xiangchun Chang ◽  
Youde Xu ◽  
Lixin Mao ◽  
Jianhua Zhang ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Junggar Basin ◽  
Basin Modelling ◽  
Fluid Evolution ◽  
Volcanic Reservoirs
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