Abstract Development of renewable energy infrastructure requires critical raw materials, such as the rare earth elements (REEs, including scandium) and niobium, is driving expansion diversification in their supply chains. Although alternative sources are being explored, majority world’s resources these found alkaline-silicate rocks carbonatites. These magmatic systems also represent major fluor...

qahr-abad fluorite deposit is located 58 km southeast of saqqez, in northwestern kordestan province and in northern end of sanandaj-sirjan zone. the factors such as change in physicochemical conditions of mineralization environment (ph and eh), variation in pressure and temperature, alteration, metamorphism, oxidation of organic matters, adsorption, activity and solubility of associated anions,...

The article presents the results of study Ilmeno-Vishnevogorsky and Buldym carbonatite complexes in Urals. It has been established that carbonatites complex are represented by high-temperature calciocarbonatites (sövites I II) with pyrochlore ore mineralization. U-Ta-rich populations uranium pyrochlores (I) fluorocalciopyrochlores (II) crystallize miaskite-pegmatites sövites I; (III) Sr-REE-pyr...

the data obtained from field and geothermometric studies and also the ree composition of fluorites associated with lead mineralization at the kamar-mehdi mine are compatible with a structurally controlled, fissure filling, epigenetic, hydrothermal origin. homogenization and last ice melting temperatures for primary fluid inclusions trapped in fluorite crystals indicate that the mineralization o...

At Hadhb't Ad-Dayheen, in the central Arabian Shield, a post-collisional igneous complex called Ad-Dayheen intrusion is exposed. It was emplaced Early Ediacaran (613–625 Ma), during final tectono-magmatic stage of Shield development. Despite limited and discontinuous ring-shaped outcrops due to alluvial cover later faulting, three pulses can be recognized field: an early pulse monzogranite; sec...

Fluorite mineralization associated with different types of magmatism is common in the Western Transbaikalia. This study deals Arshan, Yuzhnoe, and Ulan-Ude fluorite occurrences, which are most significant examples carbonatite-related region. The present paper focused on new geochemistry fluid inclusion data, aimed at revealing conditions formation, highlighting its genetic relationship magmatis...