Composition of zircons from the Cornubian Batholith of SW England and comparison with zircons from other European Variscan rare-metal granites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F16%3A00465588" target="_blank" >RIV/67985831:_____/16:00465588 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1180/minmag.2016.080.071" target="_blank" >http://dx.doi.org/10.1180/minmag.2016.080.071</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1180/minmag.2016.080.071" target="_blank" >10.1180/minmag.2016.080.071</a>
Alternative languages
Result language
angličtina
Original language name
Composition of zircons from the Cornubian Batholith of SW England and comparison with zircons from other European Variscan rare-metal granites
Original language description
Zircon from 14 representative granite samples of the late-Variscan Cornubian Batholith in SW England was analyzed for W, P, As, Nb, Ta, Si, Ti, Zr, Hf, Th, U, Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, Al, Sc, Bi, Mn, Fe, Ca, Pb, Cu, S, and F using EPMA. Zircons from the biotite and tourmaline granites are poor in minor and trace elements, usually containing 1.0– 1.5 wt% HfO2, <0.5 wt% UO2 and P2O5, <0.25 wt% Ysub.2O3, <0.2 wt% Sc2O3 and Bi2O3, and <0.1 wt% ThO2 Zircon from topaz granites from the St. Austell Pluton, Meldon Aplite and Megiliggar Rocks are slightly enriched in Hf (up to 4 wt% HfO2), U (1– 3.5 wt% UO2), and Sc (0.5–1 wt% Sc2O3). Scarce metamictized zircon grains are somewhat enriched in Al, Ca, Fe, and Mn. The decrease of the zircon Zr/Hf ratio, a reliable magma fractionation index, from 110-60 in the biotite granites to 30-10 in the most evolved topaz granites (Meldon Aplite and Megiliggar Rocks), supports a comagmatic origin of the biotite and topaz granites via long fractionation of common peraluminous crustal magma. In comparison with other European rare-metal provinces, the overall contents of trace elements in Cornubian zircons are low and the Zr/Hf- and U/Th-ratios show lower degrees of fractionation of the parental melt.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA14-13600S" target="_blank" >GA14-13600S: Rock Textures and Mineral Zoning: Insights into Open System Processes in Granitoides</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mineralogical Magazine
ISSN
0026-461X
e-ISSN
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Volume of the periodical
80
Issue of the periodical within the volume
7
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
1-17
UT code for WoS article
000391202000010
EID of the result in the Scopus database
2-s2.0-85006745079