- journal_title：Bulletin de la Societe Geologique de France
- Contributor：Catherine Lerouge ; Vincent Bouchot
- Publisher：Societe Geologique de France
- Date：2009-
- Format：text/html
- Language：en
- Identifier：10.2113/gssgfbull.180.3.263
- journal_abbrev：Bulletin de la Societe Geologique de France
- issn：0037-9409
- volume：180
- issue：3
- firstpage：263
- section：Articles
A combined stable-isotope and microthermometric study was applied to wolframite-bearing and arsenopy-rite-bearing quartz-tourmaline veins, quartz-tourmaline veins associated with leucogranite, schist and the two types of granite – massive monzogranite and leucogranite stocks – of the tungsten Châtaigneraie district, in order to estimate pressure-temperature formation conditions of quartz-tourmaline veins and determine the origin of mineralizing fluids.
Pressure-temperature conditions of barren-quartz-tourmaline-veins are estimated at 1.4 ± 0.4 kbars (around 5 km depth under lithostatic regime) and 487 ± 34°C. Oxygen and hydrogen isotopic compositions of mineralizing fluids indicate a dominant component of leucogranite-derived fluids in wolframite-bearing veins whereas arsenopyrite-bearing veins are strongly equilibrated with host schist.