Petrogenesis and mineralization of REE-rich granites in Qingxi and Guanxi, Nanling region, South China

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F17%3A43912992" target="_blank" >RIV/62156489:43410/17:43912992 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.oregeorev.2016.10.021" target="_blank" >http://dx.doi.org/10.1016/j.oregeorev.2016.10.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.oregeorev.2016.10.021" target="_blank" >10.1016/j.oregeorev.2016.10.021</a>

Result language

angličtina

Original language name

Petrogenesis and mineralization of REE-rich granites in Qingxi and Guanxi, Nanling region, South China

Original language description

Mesozoic granites in the Nanling region, South China, are important primary rocks for ion-adsorption rare earth element (REE) deposits. Moreover, metallic deposits of W, Sn, Nb and Ta also develop in these granites, most of which formed in the Late Jurassic. The Qingxi and Guanxi granites in the Nanling region contain abundant REE minerals and have zircon U-Pb ages of 223.0 +/- 0.7 Ma and 198.8 +/- 1.4 Ma, respectively. They are of metaluminous to slightly peraluminous in character having a high K talc-alkaline composition, and have high K2O + Na2O and FeOT + MgO contents and a Ga/Al ratio similar to A-type granites. These granites plot into the post-collision field, similar to the A2-type granites. The Qingxi and Guanxi granites indicate a crust dominant origin by having high levels of Rb and Th relative to Nb and Ta normalized to ocean-ridge granites. They are characterized by LREE enrichment and the majority of REE accumulating in the primary REE minerals include REE-phosphates and fluorocarbonates. The Guanxi rocks have a stronger negative Eu anomaly, but lower REE composition than the Qingxi granites, implying that the basement may have played an important role in the REE mineralization rather than fractional crystallization. This further implies that the basement in South China may have been subjected to different evolutionary geodynamics, resulting in different multi metallic mineralization of W-Sn-Nb-Ta-REE hosted by large scale Mesozoic granites.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ore Geology Reviews

ISSN

0169-1368

e-ISSN

—

Volume of the periodical

81

Issue of the periodical within the volume

March

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

17

Pages from-to

309-325

UT code for WoS article

000390970200022

EID of the result in the Scopus database

2-s2.0-85001018516