Инд. авторы:	Vasilenko V.B., Tolstov A.V., Kuznetsova L.G., Minin V.A.
Заглавие:	Chemical composition and diamond potential of kimberlites having experienced secondary alteration: Nyurbinskaya pipe, East Siberia
Библ. ссылка:	Vasilenko V.B., Tolstov A.V., Kuznetsova L.G., Minin V.A. Chemical composition and diamond potential of kimberlites having experienced secondary alteration: Nyurbinskaya pipe, East Siberia // Geochemistry International. - 2009. - Vol.47. - Iss. 11. - P.1075-1082. - ISSN 0016-7029. - EISSN 1531-8397.
Внешние системы:	DOI: 10.1134/S0016702909110032; SCOPUS: 2-s2.0-74549211312;
Реферат:	eng: Hydrothermal metasomatism greatly enriched kimberlites of the Nyurbinskaya Pipe, East Siberia, in secondary quartz. We have calculated normative secondary quartz values (Q) for each of 1035 X-ray fluorescence analyses for rock-forming oxides. The results are correlated with 437 diamond test intervals. A description of full diamond fraction composition is provided for each test interval. Eleven groups are recognized on the base of Q distribution, from dolomitic rocks with negative Q values to substantially quartzose rocks. Diamond potentials and crystal weights decrease with increasing Q values. We conclude that diamonds are dissolved during hydrothermal metasomatism. © Pleiades Publishing, Ltd., 2009.
Ключевые слова:	hydrothermal alteration; fractionation; dolomite; diamond; chemical composition; Chemical compositions; Siberia; X-ray fluorescence; source rock; quartz; metasomatism; chemical alteration; Diamonds; Quartz; Pipe; Oxide minerals; Minerals; Mineralogy; Fluorescence; Dissolution; X ray fluorescence analysis; Secondary alteration; Q-values; kimberlite; East Siberia;
Издано:	2009
Физ. характеристика:	с.1075-1082