Mineralogical investigations were carried out using research project of the Geology Institute of SB RAS,NoAAAA-A16-116122110027-2;supported by the Russian Foundation for Basic Research (Project No.17-05-00309-a);supported by the Russian Science Foundation (Grant 19-17-00019)
This paper presents the results of geochronological(40Ar-39Ar,U-Pb SHRIMP Ⅱ),petrological and geochemical studies of the Late Paleozoic complexes of alkaline rocks(Zimovechinsky,Tuchinsky and Koma) located within the...
the fostering research institutions (Cnpq and PRO-AFRICA);the Mining and Geologic Institute for the financial help
The Dongueni Mont nepheline syenite intrudes migmatitic paragneisses and siliciclastic metasediments of the Barue Complex, Mozambique. This study reports the whole-rock geochemical, U-Pb and Nd isotopic data of the ne...
Ball clay and alkaline feldspars (syenite and nepheline syenite) were mixed with red kaolinite clay (rich in iron oxides but poor in fluxing oxides) and fired (1000°C - 1200°C) in order to improve certain characteri...
Project supported by National Key Technologies Research and Development Program for 11th Five-year Plan (No. 2006 BAD10B04);China Geological Survey Project (No. 12120113087700)
Nepheline syenite is an important potassium-rich rock resource. Nepheline syenite powder was decomposed successfully by hydrothermal reaction using NaOH additive. Hydroxycancrinite (Na8(Al6Si6O24)(OH)2·2H2O ) solid a...
A primary soil-forming process can take place on the concentration waste of apatite-nepheline ores, whose biological recultivation was carried out more than 40 years ago. This process is characterized by the following...
Nepheline-kalsilite system is an important part of the petrogeny residua system. By experimental studies of many silicate systems, Bowen suggested that fractional crystallization will lead to a concentration of potass...