Morphological characteristics of diamond crystals arising as the result of dissolution in Fe-Ni-S MELT at high pressure
- Authors: Gryaznov I.A.1,2, Zhimulev E.I.1, Sonin V.M.1, Lindenblot E.S.1,2, Chepurov A.A.1, Sobolev N.V.1,2
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Affiliations:
- Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
- Novosibirsk State University
- Issue: Vol 489, No 5 (2019)
- Pages: 497-501
- Section: Geochemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/18845
- DOI: https://doi.org/10.31857/S0869-56524895497-501
- ID: 18845
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Abstract
The first results on the dissolution of flat-faced diamond crystals of octahedral habit in Fe-Ni-S melt at 3,5 GPa and 1400 °С are presented. It has been established that as a result of dissolution, flat-faceted diamond crystals are transformed into curve-faced individuals with morphological features similar to kimberlite diamonds. It is concluded that similar forms of natural diamonds could have been formed in reducing domains of the Earth’s mantle before entering the kimberlite magma.
About the authors
I. A. Gryaznov
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Email: gryaznov_9@mail.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090; 1, Pirogova street, Novosibirsk, 630090
E. I. Zhimulev
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: gryaznov_9@mail.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
V. M. Sonin
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: gryaznov_9@mail.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
E. S. Lindenblot
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Email: gryaznov_9@mail.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090; 1, Pirogova street, Novosibirsk, 630090
A. A. Chepurov
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: gryaznov_9@mail.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
N. V. Sobolev
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Email: gryaznov_9@mail.ru
Academician of the Russian Academy of Sciences
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090; 1, Pirogova street, Novosibirsk, 630090References
- Чепуров А.И., Хохряков А.Ф., Сонин В.М. и др. О формах растворения кристаллов алмаза в силикатных системах при высоком давлении // Доклады АН СССР. 1985. Т. 285. № 1. С. 212-216.
- Орлов Ю.Л. Минералогия алмаза. М.: Наука, 1984.
- Khokhryakov A.F., Pal’yanov Yu.N. The Evolution of Diamond Morphology in the Process of Dissolution: Experimental Data // Am. Mineral. 2007. V. 92. P. 909-917.
- Сонин В.М., Жимулев Е.И., Федоров И.И. и др. Травление кристаллов алмаза в силикатном расплаве в присутствии существенно водного флюида при высоких Р-Т-параметрах // Геохимия. 1997. № 4. С. 451-455.
- Бартошинский З.В., Квасница В.Н. Кристалломорфология алмаза из кимберлитов. Киев: Наукова думка, 1991. 172 с.
- Сонин В.М., Жимулев Е.И., Помазанский Б.С. и др. Морфологические особенности растворения кристаллов алмаза в расплаве Fe0,7S0,3 при 4 ГПа и 1400 ºС // ГРМ. 2018. Т. 60. № 1. С. 91-102.
- Сонин В.М., Грязнов И.А., Жимулев Е.И. и др. Морфология алмазов, растворенных в расплаве Fe-S при разном содержании серы // Изв. вузов. Геология и разведка. 2018. № 4. С. 23-29.
- Сhepurov A.I., Sonin V.M., Zhimulev E.I., et al. Dissolution of Diamond Crystals in a Heterogeneous (Metal-Sulfide-Silicate) Medium at 4 GPa and 1400 ºC // J. Mineral. Petrol. Sci. 2018. V. 113. P. 59-67.
- Bowen D.C., Ferraris R.D., Palmer C.E., et al. On the Unusual Characteristics of Diamonds from Letseng-la-Terae Kimberlites, Lesotho // Lithos. 2009. V. 112S. P. 767-774.
- Moore A.E. The Origin of Large Irregular Gem-Quality Type II Diamonds and the Rarity of Blue Type IIb Varieties // S. African J. Geology. 2014. V. 117. P. 219-236.
- Smith E.M., Shirey S.B., Nestola F., et al. Large Gem Diamonds from Metallic Liquid in Earth’s Deep -Mantle // Science. 2016. V. 35. P. 1403-1405.
- Smith E.M., Shirey S.D., Wang W. The Very Deep Origin of the World’s Biggest Diamond // Gems & Gemology. 2017. V. 53. P. 388-403.
- Жимулев Е.И., Чепуров А.И., Синякова Е.Ф. и др. Кристаллизация алмаза в системах Fe-Co-S-C и Fe-Ni-S-C и роль металл-сульфидных расплавов в генезисе алмазов // Геохимия. 2012. № 3. С. 227-239.
- Zhang Z., Hasting P., Von der Handt A., et al. Experimental Determination of Carbon Solubility in Fe-Ni-S melts // Geochim. Cosmochim. Acta. 2018. V. 225. P. 66-79.
- Соболев Н.В., Ефимова Е.С., Поспелова Л.Н. Самородное железо в алмазах Якутии и его парагенезис // Геология и геофизика. 1981. Т. 22. № 12. С. 25-29.