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Experimental Study of the Magmatic Stage Genesis of Tantalum Deposits Associated with the Lithium‐Fluorine Granites
Author(s) -
CHEVYCHELOV Vitaly
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12373_6
Subject(s) - tantalum , citation , lithium (medication) , stage (stratigraphy) , geochemistry , library science , history , computer science , geology , chemistry , psychology , paleontology , organic chemistry , psychiatry
Geological data testify to an important role of magmatic factors in the formation of albitite, greisen and other genetic types of rare metal deposits of Ta, Nb, Sn, W, Mo, etc. Owing to their chemical properties these metals have high affinity to oxygen and high affinity to magmatic melt. They accumulate in the residual melt, enriching a later differentiates of evolutionary granite series. Deposits tend to be associated with highly differentiated multiphase granitic plutons. Many questions of principle of genesis of these rare metal deposits remain till now insufficiently clear. Experimental researches can help to receive more precise representations about physical and chemical conditions of formation of such deposits (Zaraisky, 2004; Chevychelov et al., 2005; Chevychelov, 2013). In this report the experimental quantitative data on the solubility of columbite, (Mn,Fe)(Nb,Ta)2O6, in granitic melts of various alkalinity and alumina-rich, on the diffusion of Ta and Nb in magmatic melts and on partitioning of Ta and Nb in the processes of fluidmagmatic interaction are considered for modeling of formation conditions of natural tantalum deposits.