Éric Marcoux
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View article: How Stiff Was Armorica During the Variscan Orogeny? A Reappraisal of the “Bretonian” Phase in Central Brittany
How Stiff Was Armorica During the Variscan Orogeny? A Reappraisal of the “Bretonian” Phase in Central Brittany Open
In collision belts, the upper plate is generally less deformed than the lower one that underwent syn-metamorphic ductile shearing, and frequently late-collisional crustal melting. Concerning the Variscan orogeny, it is widely accepted that…
View article: The La Lucette Sb-Au-(W) vein-deposit (Armorican Massif, France): New time and genetic constraints to decipher the 310–295 Ma Sb-Au metallogenic peak in the Variscan Belt
The La Lucette Sb-Au-(W) vein-deposit (Armorican Massif, France): New time and genetic constraints to decipher the 310–295 Ma Sb-Au metallogenic peak in the Variscan Belt Open
International audience
View article: Tennantite-(Cu), Cu<sub>12</sub>As<sub>4</sub>S<sub>13</sub>, from Layo, Arequipa Department, Peru: a new addition to the tetrahedrite-group minerals
Tennantite-(Cu), Cu<sub>12</sub>As<sub>4</sub>S<sub>13</sub>, from Layo, Arequipa Department, Peru: a new addition to the tetrahedrite-group minerals Open
Tennantite-(Cu), Cu 12 As 4 S 13 , was approved as a new mineral species from the Layo epithermal deposit, Castilla Province, Arequipa Department, Peru, where it occurs as black metallic anhedral grains, up to 0.1 mm across, replacing enar…
View article: The genesis of gold in Sb-As and Sb-Au ore veins, new constraints from the study of the La Belli&#232;re and La Lucette districts (Armorican Massif, France)
The genesis of gold in Sb-As and Sb-Au ore veins, new constraints from the study of the La Bellière and La Lucette districts (Armorican Massif, France) Open
<p>Shear zones hosted antimony (Sb) quartz vein-type deposits are the most important sources of Sb worldwide. They have been recognized and mined since the Antiquity in the European Variscan belt, and particularly in the French Varis…
View article: The perigranitic W-Au Salau deposit (Pyrenees, France): polyphase genesis of a late Variscan intrusion related deposit
The perigranitic W-Au Salau deposit (Pyrenees, France): polyphase genesis of a late Variscan intrusion related deposit Open
A field study combined with a laboratory study and 3D modeling have been performed in order to decipher the genesis of the Salau deposit W-Au mineralization (Pyrenees, France), one of the most important for tungsten in Europe. Results show…
View article: The tungsten-gold veins of Bonnac (French Massif central): new constraints for a Variscan granite-related genesis
The tungsten-gold veins of Bonnac (French Massif central): new constraints for a Variscan granite-related genesis Open
In the Brioude-Massiac district (French Massif Central: FMC), a network of W-As-Bi-Au quartz veins constitutes the Bonnac deposit, where tungsten is the major economic element, together with high-grade gold (up to 15 g/t Au). The evolution…
View article: Multi-isotopic tracing (Mo, S, Pb, Re Os) and genesis of the Mo W Azegour skarn deposit (High-Atlas, Morocco)
Multi-isotopic tracing (Mo, S, Pb, Re Os) and genesis of the Mo W Azegour skarn deposit (High-Atlas, Morocco) Open
The MoCuW Azegour skarn, located in the High-Atlas in Morocco, is associated with a Late Hercynian alkaline granitic intrusion. Here the origin of the mineralisation via ReOs geochronology and using Mo, S and Pb isotopes is discussed. The …