La coupole de Montebras est un petit massif granite à métaux rares (Sn, W, Li, Nb-Ta) situé au nord du Massif Central Français qui se met en place Carbonifère supérieur dans encaissant plus ancien, le Chanon (357,2 ± 2,1 Ma). Deux épisodes magmatiques, microgranite (316,1 4,3 Ma) et leucogranite albitique (309,8 3,9 Ma), sont distingués. Le second développe son toit des formations contact, nota...

nezam-abad area is located in southwest of shazand (arak) which is a part of sanandaj-sirjan zone. major intrusive rocks of nezam-abad are quartz diorite and minor amount of granodiorite. leucogranitic, pegmatite dykes and quartz-tourmaline veins were intruded the quartz diorite. quartz diorites are mainly composed of plagioclase, hornblende, biotite, quartz and pyroxene as major minerals. majo...

In the Jebilet massif (Variscan belt, Morocco), two peraluminous granodioritic plutons (the Eastern and Central plutons) are spatially associated with a regional shear zone. The pluton includes Tabouchent, Bramram Bamega intrusions, which represent variably eroded portions of an arcuate apical part pluton. intrusions composed biotite ± cordierite-bearing granodiorite that is crosscut by tourmal...

The Tethyan Himalaya is the fourth metallogenic belt discovered to date within Tibetan Plateau and contains chromite, gold Sb–polymetallic mineralization. records a series of complex tectonic–magmatic events that include break-up, subduction, collision, detachment, obduction Eastern Gondwana continent, all which generated ideal conditions for ore formation. However, this area remains under-expl...

A strategy for establishing the supply chain of tin, which is used in various industries, necessary because tin’s and demand are highly dependent on a few countries. Focusing Mongolia as resource-rich country, this study examines current state tin mineral resources characteristics mineralization according to tectonic environment. The magmatic activity that occurred from Late Paleozoic Mesozoic ...

Himalayan leucogranites are abundant within a ~2000-km-long, E-W trending belt on the Tibetan Plateau. Recently, it has been shown that several and pegmatites (including aplites) of Himalayan leucogranitic closely related to rare-metal mineralization. The commonly peraluminous strongly peraluminous, classifying as highly-fractionated granites in terms whole-rock geochemistry chara...