Alkaline

Russia, Sakha Republic (Yakutia), Gross gold deposit, upper Usu river. Syenite-porphyry sill. Aldanskiy complex. Upeer Jurassic - lower Cretaceous. Absolute age - 142 million years (U/Pb).

Russia, Sakha Republic (Yakutia), Gross gold deposit, upper Usu river. Syenite-porphyry sill. Aldanskiy complex. Upeer Jurassic - lower Cretaceous. Absolute age - 142 million years (U/Pb).

Russia, Sakha Republic (Yakutia), Gross gold deposit, upper Usu river. Syenite sill. Aldanskiy complex. Upeer Jurassic - lower Cretaceous. Absolute age - 142 million years (U/Pb).

Sardinia, Cartoe.  Alkaline to transitional basalts, basalts, trachibasalts and hawaites in large lava flows, locally bearing peridotitic nodules, scoriaceous cones. Pliocene-Lower Pleistocene.