scholarly journals Behaviour of Li isotopes during regolith formation on granite (Massif Central, France): Controls on the dissolved load in water, saprolite, soil and sediment

2019 ◽  
Vol 523 ◽  
pp. 121-132 ◽  
Author(s):  
Ph. Négrel ◽  
R. Millot
Keyword(s):  
Massif Central ◽  
Granite Massif ◽  
Dissolved Load ◽  
Soil And Sediment

Geochemistry of Auriat granite (Massif Central, France)

1984 ◽  
Vol 45 (3-4) ◽  
pp. 263-277 ◽  
Author(s):  
D. Arniaud ◽  
C. Dupuy ◽  
J. Dostal
Keyword(s):  
Massif Central ◽  
Granite Massif

scholarly journals Geochemical Signature of Magmatic-Hydrothermal Fluids Exsolved from the Beauvoir Rare-Metal Granite (Massif Central, France): Insights from LA-ICPMS Analysis of Primary Fluid Inclusions

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-25 ◽  
Author(s):  
Matthieu Harlaux ◽  
Julien Mercadier ◽  
Wilédio Marc-Emile Bonzi ◽  
Valentin Kremer ◽  
Christian Marignac ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Rare Metal ◽  
Hydrothermal Fluids ◽  
Raman Spectrometry ◽  
Peraluminous Granite ◽  
Geochemical Composition ◽  
Massif Central ◽  
Granite Massif ◽  
Rare Metal Granite ◽  
Primary Fluid

The Beauvoir granite (Massif Central, France) represents an exceptional case in the European Variscan belt of a peraluminous rare-metal granite crosscutting an early W stockwork. The latter was strongly overprinted by rare-metal magmatic-hydrothermal fluids derived from the Beauvoir granite, resulting in a massive topazification of the quartz-ferberite vein system. This work presents a complete study of primary fluid inclusions hosted in quartz and topaz from the Beauvoir granite and the metasomatized stockwork, in order to characterize the geochemical composition of the magmatic fluids exsolved during the crystallization of this evolved rare-metal peraluminous granite. Microthermometric and Raman spectrometry data show that the earliest fluid (L1) is of high temperature (500 to >600°C), high salinity (17–28 wt.% NaCl eq), and Li-rich (Te<−70°C) with Na/Li ratios ~5. LA-ICPMS analyses of L1-type fluid inclusions reveal that the chemical composition of this magmatic-hydrothermal fluid is dominated by Na, K, Cs, and Rb, with significant concentrations (101–104 ppm) in rare-metals (W, Nb, Ta, Sn, and Li). This study demonstrates that primary fluid inclusions preserved the pristine signature of the magmatic-hydrothermal fluids in the Beauvoir granite but also in the metasomatized W stockwork, despite the distance from the granitic cupola (>100 m) and interaction with external fluids.

The behaviour of rare-earth elements and Y during the rock weathering and soil formation in the Řı́čany granite massif, Central Bohemia

1998 ◽  
Vol 215 (1-2) ◽  
pp. 101-111 ◽  
Author(s):  
Luděk Minařı́k ◽  
Anna Žigová ◽  
Jiřı́ Bendl ◽  
Petr Skřivan ◽  
Martin Št'astný
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Soil Formation ◽  
Rock Weathering ◽  
Massif Central ◽  
Granite Massif
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