Prospects for primary diamond potential of the Anabar Massif
https://doi.org/10.52349/0869-7892_2024_100_165-179
Abstract
There is a novel study of typomorphic features of picroilmenites, pyropes, and spinelides from the alluvium of the Legkiy Creek’s upper reaches, the right tributary of the Nalim-Rassokha River. Presence of a new kimberlite field in the Anabar Massif, in the basin of the Nalim-Rassokha and Ulakhan-Staraya rivers, confirms Krasnoyarsk geologists’ arguments (1984). Characteristic surfaces of mineral associations prove to pertain to the primary halo of kimberlite indicator minerals. Picroilmenites comparable to inclusions in diamonds and diamond-bearing peridotites are absent in the alluvium of the Bolshaya Kuonamka and Bargydamalaakh rivers draining non-diamond-bearing kimberlite fields. The quantitative ratio of pyropes of lherzolite (86 %) and dunite-harzburgite (11 %) parageneses is typical of kimberlites. The spinelides association originates from deep ultramafic rocks and the groundmass of kimberlites. There are grounds for discovering a new Rassokha diamond-bearing kimberlite field in the Anabar Massif, in the basin of the Nalim-Rassokha and Ulakhan-Staraya rivers.
About the Authors
B. E. Burakov
All-Russian Geological Research Institute of A. P. Karpinsky
Russian Federation
Russian Federation
Boris E. Burakov - DSc (Geology and Mineralogy), Leading Specialist
Saint Petersburg
Scopus Author ID 6701735957
ResearcherID AFO-8439-2022
M. N. Goloburdina
All-Russian Geological Research Institute of A. P. Karpinsky
Russian Federation
Russian Federation
Marina N. Goloburdina - Leading Geologist
Saint Petersburg
S. A. Grakhanov
All-Russian Geological Research Institute of A. P. Karpinsky; ALMAR — diamonds of the Arctic
Russian Federation
Russian Federation
Sergey A. Grakhanov - DSc (Geology and Mineralogy), Chief Researcher, Chief Geologist
Saint Petersburg
Yakutsk
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Review
For citations:
Burakov B.E., Goloburdina M.N., Grakhanov S.A. Prospects for primary diamond potential of the Anabar Massif. Regional Geology and Metallogeny. 2024;31(4 (100)):165-179. (In Russ.) https://doi.org/10.52349/0869-7892_2024_100_165-179
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