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Archangelsk kimberlite-picrite Region is world-class source of diamonds, where two large diamond deposits in mining stage presently, with total reserves more than 300 mln carats. Besides that, there is more than a hundred occurrences of non-diamondiferous kimberlites, its convergent rocks and tholeiitic basalts (Fig.1) (Bogatikov et al., 1999; Garanin, 2006). Within this region based on main petrological characteristics, the largest regional formational taxons have been distinguished: (1) Zimneberezhny Mega-Complex of kimberlites-non-pyroxene alkaline picrites, (2) NenoksoChidvinsky Mega-Complex of feldspathic picrites-olivine melilitites (Fig. 2) and (3) SoyanaPinezhsky dolerite-basalt Complex (Tretyachenko 2008; 2015).

Main mineralogical-petrological features of Early-Hercynian volcanic complexes of Archangelsk kimberlite-picrite region, NW Russia