Sorokina E.; Rassomakhin M.; Nikandrov S.; Karampelas S.; Kononkova N.; Nikolaev A.; Anosova M.; Somsikova A.; Kostitsyn Y.; Kotlyarov V.
(2019)
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Blue sapphire of gem quality was recently discovered in spinel–chlorite–muscovite rock within meta-ultramafites near the Ilmenogorsky alkaline complex in the Ilmen ...