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The distribution of rare earth element (REE) deposits and their resources through geological time has been analyzed. The analysis is based on data on 103 deposits distributed around the world with a resource estimate of at least 100 000 t of lanthanoid and yttrium oxides. The variability in the...
—The Ushkatyn-III deposit is located in Central Kazakhstan, 300 km west of the city of Karaganda. The ore member consists of Upper Devonian carbonate rocks containing stratiform layers of hydrothermal–sedimentary iron–manganese and hydrothermal barite–lead ores. The study objects include...
Gabbro–norites and gabbros from the Lukkulaisvaara layered ultramafic massif (Northern Karelia) was studied. The T–P parameters of its formation were determined from data on the compositions of the minerals making up these rocks. It is suggested that the Lukkulaisvaara massif was formed in three...
Gold–copper–sulfide, noble-metal–copper–uranium and noble-metal–copper–uranium–vanadium mineralization in Paleoproterozoic structures of the Karelian Craton is associated with the evolution of the large regional Lapland–Onega rift structure in the Svecofennian. A characteristic feature of the...
The Qinglong uranium ore field, including the Gangou and Panlingtou uranium deposits, is situated on the northern margin of the North China Craton (NCC). The Haifanggou Formation is a major uranium-bearing horizon in the ore field. We conducted petrographic, geochemical, electron probe, and...
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