Trace elements (REE) and isotopes (O, C, Sr) to characterize the metasomatic fluid sources: evidence from the skarn deposit (Fe, W, Cu) of Traversella (Ivrea, Italy)

1991 ◽  
Vol 106 (3) ◽  
pp. 325-339 ◽  
Author(s):  
J. Vander Auwera ◽  
L. Andre
Keyword(s):  
Trace Elements ◽  
Skarn Deposit ◽  
Metasomatic Fluid ◽  
Fluid Sources

scholarly journals Post-magmatic alteration in eudialyte from the North Qôroq centre, South Greenland

1997 ◽  
Vol 61 (404) ◽  
pp. 99-109 ◽  
Author(s):  
Ian M. Coulson
Keyword(s):  
Trace Elements ◽  
Mass Balance ◽  
Nepheline Syenite ◽  
Slight Modification ◽  
The North ◽  
Rock Types ◽  
Show Evidence ◽  
Complete Breakdown ◽  
Metasomatic Fluid ◽  
Lower Temperature

AbstractThe North Qôroq centre comprises a series of nested nepheline syenite intrusions and forms part of the mid-late Proterozoic Gardar province of South Greenland. Within the centre fractionation has produced varied rock types ranging from augite-syenite to lujavrite, a eudialyte microsyenite. Samples of eudialyte from the lujavrites of unit SN1B of the centre show evidence for two-stage alteration. This alteration ranges from slight modification along crystal margins to complete breakdown and replacement by new pseudomorphing phases. Modification to crystal margins is accompanied by increasing Nb and Zr contents and is related to metasomatism produced by the intrusion of younger syenite units of the North Qôroq centre. More extensive alteration is as a result of metasomatism followed by lower-temperature supergene alteration. Simplified reactions for this breakdown include eudialyte + metasomatic fluid = allanite + nepheline; eudialyte + metasomatic fluid = titanite + aegirine + møsandrite + wöhlerite; eudialyte + fluid = zirfesite + fluid. Mass balance calculations for altered compared with unaltered samples of lujavrite show that alteration took place at approximately constant volume with an overall increase in Fe (+2.41 g/100g), Si and K (+0.65 and +0.61 g/100g), whilst Na (−2.67 g/100g) and all trace elements, particularly La, Y, Nb and Zr (−5.6 to −166 g/10000g) are lost from the system.

In-situ LA-ICPMS trace elements and U–Pb analysis of titanite from the Mesozoic Ruanjiawan W–Cu–Mo skarn deposit, Daye district, China

2015 ◽  
Vol 65 ◽  
pp. 990-1004 ◽  
Author(s):  
Xiao-Dong Deng ◽  
Jian-Wei Li ◽  
Mei-Fu Zhou ◽  
Xin-Fu Zhao ◽  
Dai-Rong Yan
Keyword(s):  
Trace Elements ◽  
Skarn Deposit

scholarly journals Trace Elements and Li Isotope Compositions Across the Kamchatka Arc: Constraints on Slab‐Derived Fluid Sources

2020 ◽  
Vol 125 (5) ◽  
Author(s):  
Haiyang Liu ◽  
Yilin Xiao ◽  
He Sun ◽  
Fengtai Tong ◽  
Alexander Heuser ◽  
...  
Keyword(s):  
Trace Elements ◽  
Li Isotope ◽  
Fluid Sources

Mixed fluid sources involved in diamond growth constrained by Sr–Nd–Pb–C–N isotopes and trace elements

2010 ◽  
Vol 289 (1-2) ◽  
pp. 123-133 ◽  
Author(s):  
Ofra Klein-BenDavid ◽  
D. Graham Pearson ◽  
Geoff M. Nowell ◽  
Chris Ottley ◽  
John C.R. McNeill ◽  
...  
Keyword(s):  
Trace Elements ◽  
Diamond Growth ◽  
N Isotopes ◽  
Mixed Fluid ◽  
Fluid Sources

Tracking fluid sources for skarn formation using scapolite geochemistry: an example from the Jinshandian iron skarn deposit, Eastern China

2019 ◽  
Vol 55 (5) ◽  
pp. 1029-1046
Author(s):  
Li-Ping Zeng ◽  
Xin-Fu Zhao ◽  
Johannes Hammerli ◽  
Tian-Wei-Teng Fan ◽  
Carl Spandler
Keyword(s):  
Eastern China ◽  
Skarn Deposit ◽  
Fluid Sources
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