Megakalsilite, a new polymorph of KAlSiO4, from the Khibina alkaline massif, Kola Peninsula, Russia: mineral description and crystal structure

• Main Authors: KHOMYAKOV AP, NECHELYUSTOV GN, SOKOLOVA E, BONACCORSI, ELENA, MERLINO, STEFANO, PASERO, MARCO
• Other Authors: Khomyakov, Ap, Nechelyustov, Gn, Sokolova, E, Bonaccorsi, Elena, Merlino, Stefano, Pasero, Marco
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2002
• Subjects: megakalsilite; new mineral specie; polymorph; crystal structure; Khibina; Kola Peninsula; Koashva; kola peninsula
• Online Access: http://hdl.handle.net/11568/205759

Megakalsilite, KAlSiO4, hexagonal, a 18.1111(8), c 8.4619(4) Å, V 2403.7(2) Å3, c:a = 0.4672, space group P63, Z = 24, R = 0.039 (for 3255 observed reflections collected with a four-circle X-ray diffractometer), is a new mineral species from Mount Koashva, Khibina alkaline massif, Kola Peninsula, Ru...