and Greenland

• Main Authors: A. S. Povarennykh, A. N. Platonov, V. P. Belichenko, V. P. On The
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: F; Greenland; Ilimaussaq; Kola Peninsula; Lovozero; kola peninsula
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.553.6708; http://2dgf.dk/xpdf/bull20-01-20-26.pdf

colour of Ussingite from the Ilimaussaq (South Greenland) and Lovo-zero (Kola Peninsula) alkaline intrusions. Bull. geol. Soc. Denmark, vol. 20, pp. 20-26. Copenhagen, July 9th, 1970. Ussingite Na2 [AlSi3O8] OH- is a pale violet mineral displaying a distinct thermoluminescence. The spectral absorption curves of the visible region, the thermoluminescence and the electronic paramagnetic resonance of two specimens of ussingite from the Ilimaussaq alkaline massif (South Greenland) and from Lovozero (the Kola Peninsula) have been investigated. It is suggested that the natural and artificial (pro-duced by X-ray irradiation) violet colour of ussingite is connected with radiation centers (SO4)~, which are typical for the feldspathoids. Ussingite was first found in the limaussaq intrusion and was described by Bøggild (1913). In the USSR ussingite was detected in 1923 by the Khibina expedition of the USSR Academy of Sciences in the north-western section of the Lovozero tundras (Bonstedt, 1925). Gerassimovsky (1937) gave a