BBIOTITES FROM GRANITES OF KIROVOHRAD AND NOVOUKRAINKA COMPLEXES (CENTRAL PART OF THE UKRAINIAN SHIELD)

• Дата: 2011
• Автори: KRYVDIK, S. G., KONOVAL, N. M.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2011
• Теми: biotite; granite; Kirovohrad and Novoukrainka complexes; Ukrainian shield; Биотиты; гранит; кировоградский и новоукраинский комплексы; Украинский щит; біотити; граніт; кіровоградський і новоукраїнський комплекси; Український щит; 549.623.54; 522.1 (477)
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/138251
• Назва журналу: Geological journal

The features of biotite chemistry fromKirovogradand Novoukrainka granites (the central part of the Ukrainian shield) testify to chifferent conditions of their formation. Biotites from the Novoukrainka granites are characteritzed by high Ti02 content (up to 5,3-5,9%) and low aluminia that is typical for granulic facies of ultrametamor-phism. Considerable proportion of biotittesKirovogradgranites is distinguished by increased Ti02 content (to 3,5%) that is explained with high temperature of their formation (high amphibolite facies of ultrametamorphism. In tuese granites plagioclase contains antipertithic ingrowthes feldspad. In biotites of botu granite complex increased Li20 contens (0,2-0,4%) is revealed. It can congides as possible relation ofKirovogradand Novoukrainka granites as well as country gneisses to deposits of litium pegmatites in the central part of the Ukrainian shield (Polokhivka, Nadiya, Stankyvate).