Apatite from the Manchary kimberlite pipe (Central Yakutia)
https://doi.org/10.31242/2618-9712-2020-25-3-2
Abstract
Apatite is a common magmatic mineral. This calcium phosphate acts as a mineral concentrating halogens and strontium, which suggests that it is an indicator of late-stage melt evolution. Kimberlites represent few rocks where apatite has been studied in a limited number of reservoirs. The present paper discusses the results of the analysis of kimberlite apatite grains from the middle Paleozoic kimberlite pipe Manchary (Khompu-May field, Central Yakutia). The paper reports chemical composition and zone distri bution of apatite from kimberlites of the Manchary pipe. We also provide comparative analysis with kimberlite apatites (Canada, RSA), carbonatites (RSA), peridotite xenoliths in basalt (China), and eclogite xenoliths in kimberlite (Canada). It was found that the mineral in the Manchary kimberlite pipe is a strontium fluorapatite. Analysis of zoning in crystals allowed us to show the behavior of SrO in the formation of kimberlites of the Manchary pipe. Apatite under study was found to be late-stage magmatic, with its composition being affected by F- and Sr-rich fluids. Differences of apatite from the Manchary pipe and diamond-bearing kimberlite bodies, carbonatites, peridotite xenoliths, and eclogites in RSA, Canada and China indicate typomorphic characteristics of the mineral for particular magmatic systems with strontiumand volatile-rich fluids which allows one to use doped apatite for comparative studies of kimberlites and other rocks.
Supporting agencies: The work was carried out aspart of the scientific research of the Diamond and Precious Metal Geology Institute of the Siberian Branch of the Russian Academy of Sciences (No. 0381-2019-0003).
About the Authors
N. A. Oparin
Diamond and Precious Metal Geology Institute SB RAS
Russian Federation
Russian Federation
OPARIN Nikolay Alexandrovich, junior researcher
39 Lenin pr., Yakutsk 677980
O. B. Oleinikov
Diamond and Precious Metal Geology Institute SB RAS
Russian Federation
Russian Federation
OLEYNIKOV Oleg Borisovich, candidate of geological and mineralogical sciences, leading researcher
39 Lenin pr., Yakutsk 677980
L. N. Baranov
PJSC «ALROSA»;
V.S. Sobolev Institute of Geology and Mineralogy SB RAS
Russian Federation
Russian Federation
BARANOV Leonid Nickolaevich, junior researcher, research engineer
16 Chernyshevskoe rd., 678170 Mirniy;
3/1 Acad. Koptyug pr., Novosibirsk 630090
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Review
For citations:
Oparin N.A., Oleinikov O.B., Baranov L.N. Apatite from the Manchary kimberlite pipe (Central Yakutia). Arctic and Subarctic Natural Resources. 2020;25(3):15-26. (In Russ.) https://doi.org/10.31242/2618-9712-2020-25-3-2
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