Ruby–bearing feldspathic dike in peridotite from Ray–Iz ophiolite, the Polar Urals: Implications for mantle metasomatism and origin of ruby

*Department of Earth and Environmental Sciences, Graduate School of Science and Technology, Kumamoto University, 2–39–1 Kurokami, Chuo–ku, Kumamoto 860–8555, Japan **Department of Earth Sciences, Kanazawa University, Kakuma, Kanazawa 920–1192, Japan ***ODS, JAMSTEC, 2–15 Natsushima, Yokosuka 237–0061, Japan Zavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences, Russia