نتایج جستجو برای: k2o and cao
تعداد نتایج: 16830800 فیلتر نتایج به سال:
The Galand-rud coal mine is one of the coal producing areas of central Alborz coal basin which is located in Mazandran Province. Based on mineralogical and geochemical studies pyrite is the main sulfide mineral in the mine. Based on correlation matrix, cluster analysis and principle component analysis (PCA), SiO2, Al2O3, Na2O, K2O and TiO2 are associated with alluminosilicate minerals, CaO, MgO...
Roles of K2O on the CaO-ZnO Catalyst and Its Influence on Catalyst Basicity for Biodiesel Production
Lahijan granitoid pile, east of Gillan Province, petrographically comprises of mostly two group rocks: felsics (granite, porphyry granite and granodiorite) and mafics (diorite) and in terms of magmatic series belong to subalkaline and are mostly calcalkaline. The contact between the pile and surrounding rocks is faulty and includes myllonitic and cataclastic rocks yet there is no metamorphic ha...
The Guadalcazar is located in the Mesa Central (MC) province, which mainly composed of granitic rocks and known for its metallogenetic. contain complex Sn-Hg-Ag-F mineralization were emplaced during Eocene to Oligocene. However, source, origin, evolution magma tectonic setting this magmatic area have never been explained. In study, we conducted petrology, whole-rock geochemistry, U–Pb zircon ge...
The massive sulphide deposit at Kantienpan Cu-Zn mine is hosted by volcano sedimentary succession known as the Areachap Group, in the eastern part of Namaqua Metamorphic Province, South Africa. The deposits were affected by a complex deformation and metamorphic history and represent examples of upper amphibolite to granulite grade metamorphosed volcanic-hosted m...
Bulk-rock geochemical compositions of hypabyssal kimberlites, emplaced through the Archaean Kaapvaal craton and Proterozoic Namaqua–Natal belt, are used to estimate close-to-primary magma compositions of Group I kimberlites (Mg-number 1⁄4 0 82–0 87; 22–28 wt % MgO; 21–30 wt % SiO2; 10–17 wt % CaO; 0 2–1 7 wt % K2O) and Group II kimberlites (Mgnumber 1⁄4 0 86–0 89; 23–29 wt % MgO; 28–36 wt % SiO...
Miserite, as a type of calcium potasium silicate mineral, was characterized by J.D. Scott at 1975 in the form of a chain silicate structure according to Formula. The primary cell parameters and the positioning of all atoms in the cell were characterized by scott and he also denoted that in this structure, some impurities such as,,… were substituted by as solid solution. Beal were synthesized ...
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