Chemical signature of quartz from S- and A-type rare-metal granites – A summary
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F20%3A00531530" target="_blank" >RIV/67985831:_____/20:00531530 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0169136819310716" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169136819310716</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.oregeorev.2020.103674" target="_blank" >10.1016/j.oregeorev.2020.103674</a>
Alternative languages
Result language
angličtina
Original language name
Chemical signature of quartz from S- and A-type rare-metal granites – A summary
Original language description
About 800 new and 1200 already published laser ablation inductively coupled plasma mass spectrometry analyses of quartz from rare-metal granites and related greisens, quartz-tourmaline rocks and quartz veins were evaluated in order to define typical trace-element signatures of quartz of different origin. The studied dataset comprises typical examples of sub-aluminous to slightly peraluminous plutons (A-type granites of the Kimi stock, Finland, Eastern Erzgebirge, Czech Republic, Orlovka, Russia and Ongon Chairchan, Mongolia), and strongly peraluminous plutons (S-type granites of Beauvoir, France, Cornwall, England, Panasqueira and Argemela, Portugal, Western Erzgebirge, Czech Republic). Additional 700, mostly already published, analyses of quartz from barren granites of all geochemical types (I, S, A-type), rhyolites and barren and rare-element pegmatites were evaluated for comparison. Compiled data reveal high diversity in the contents of trace elements in quartz even among rocks of similar geochemical composition. The most common trace elements in magmatic quartz are Al, Li and Ti with medians of 447, 39.6 and 17.4 ppm in S-type rare-metal granites, and 160, 15 and 6.6 ppm in A-type rare-metal granites. The contents of all these elements in greisens and quartz veins are significantly lower than in their parental granites. Al contents above 450 ppm should serve as a reliable indicator of S-affinity of the analyzed granite, while contents <250 ppm Al are typical for A-type rocks. The contents of Al, Ge and Rb generally increase in the course of magmatic fractionation, while the contents of Ti decrease. The Ge/Ti value can be taken as a valuable indicator of fractionation of granitic melt from which quartz crystallized: this value was found to generally range from 0.002 to 0.2 in quartz from common granites. It may, however, reach 1 in most rare-metal granites (Erzgebirge, Panasqueira, Cornwall), 10 at Beauvoir, 35 at Orlovka, and 50 at Argemela. The uptake of Li into quartz is limited by Al contents in quartz and affected by the contents of volatiles in the melt, it does not correlate with Li contents in parental melt and cannot be used as an indicator of Li-rich magmatic systems.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10504 - Mineralogy
Result continuities
Project
<a href="/en/project/GA19-05198S" target="_blank" >GA19-05198S: Greisenization and albitization - geological processes potentially concentrating some critical raw materials for modern technologies</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ore Geology Reviews
ISSN
0169-1368
e-ISSN
—
Volume of the periodical
125
Issue of the periodical within the volume
October
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
15
Pages from-to
103674
UT code for WoS article
000570169300003
EID of the result in the Scopus database
2-s2.0-85088833432