Abstract The Permo-Carboniferous Oslo Rift is a narrow, aborted continental rift with comparatively little extension but voluminous magmatism, developed at Proterozoic lithospheric discontinuity. On the southern flank of onshore part rift, multiple intrusive phase Larvik plutonic complex (LPC) encompasses almost width conspicuous over- to undersaturated assemblage monzonite (larvikite, tønsberg...

Abstract The alkaline Cho Don complex in NE Vietnam comprises several mafic-felsic suites related to the widespread magmatism developed during early-Permian–late-Triassic. contribution explores petrogenesis of nepheline syenite from Bang Phuc massif and its petrogenetic relationship with cogenetic scapolite-rich gabbro. formed through fractional crystallization pristine mantle-derived basaltic ...

The Piquiri Syenite Massif, southernmost Brazil, is part of the post-collisional magmatism related to the Neoproterozoic Brasiliano-Pan-African Orogenic Cycle. The massif is about 12 km in diameter and is composed of syenites, granites, monzonitic rocks and lamprophyres. Diopside-phlogopite, diopside-biotite-augite-calcic-amphibole, are the main ferro-magnesian paragenesis in the syenitic rocks...

In grinding practice, heterogeneous poli-mineral systems are more common than homogeneous mono-mineral system. The heterogeneity of raw materials in mineral beneficiation circuit results by virtue the varying properties constituents an ore. Therefore, main objective this investigation is to study effect preheating on grindability quartz as a ore, and nepheline syenite one. 2n Factorial method w...

Eudialyte-group minerals are important accessory of peralkaline rocks nepheline-syenite massifs and alkaline–ultramafic complexes. Here, we report the complex study a eudialyte-group mineral (EGM) from pegmatite alkaline-ultrabasic Odikhincha massif (Polar Siberia). The chemical composition studied EGM is intermediate between those taseqite eudialyte, with small admixtures other members eudialy...