Early silurian age of skarns of the Ichkeulmes copper and gold deposit (Northern Kazakhstan): results U-PB (ID-TIMS) geochronological studies of garnet
- Autores: Tretyakov A.1, Degtiarev K.1, Stifeeva M.1, Salnikova E.B.1, Chepchev S.1, Кotov A.2, Plotkina U.V.2, Shatagin K.N.2, Kasenova N.2
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							Afiliações: 
							
- Геологический институт РАН
 - Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences
 
 - Edição: Volume 526, Nº 1 (2026)
 - Seção: GEOLOGY OF ORE DEPOSITS
 - ##submission.dateSubmitted##: 19.09.2025
 - ##submission.dateAccepted##: 06.10.2025
 - ##submission.datePublished##: 16.10.2025
 - URL: https://bakhtiniada.ru/2686-7397/article/view/309543
 - ID: 309543
 
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Resumo
Garnet crystals have been studied in the rocks of the Ichkeulmes copper and gold deposit located in the southwestern exocontact zone of the Seletinsky granite massif of the Krykkuduk complex. It has been established that garnet is represented by polychrome zonal grains and individual uniformly colored crystals. Pomegranate grains often have zonality due to the alternation of zones with different ratios of andradite and grossular components. U-Pb (ID-TIMS) geochronological studies have been performed for polychrome and individual garnet grains of green and brown colors and the Early Silurian (438 ± 1 million years) age of their crystallization has been substantiated, which is assumed to be the age of formation of the skarns of the Ichkeulmes deposit. The presence of solid-phase inclusions of minerals of the aikinite group in garnet, the formation of which is paragenetically related to gold mineralization, indicates the synchronicity of the processes of formation of the studied garnet and ore genesis.
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Sobre autores
Andrey Tretyakov
Геологический институт РАН
							Autor responsável pela correspondência
							Email: and8486@yandex.ru
				                	ORCID ID: 0000-0002-1795-9715
				                	Código SPIN: 1328-8304
																		                								
к.г.-м.н., ведущий научный сотрудник, завлаб, Геологический институт РАН
Пыжевский пер. 7, Москва, 119017, РоссияKirill Degtiarev
														Email: degtkir@mail.ru
				                					                																			                												                														
Maria Stifeeva
														Email: stifeeva.maria@yandex.ru
				                					                																			                												                														
E. Salnikova
														Email: katesalnikova@yandex.ru
				                	ORCID ID: 0000-0002-9099-682X
				                	Código SPIN: 1121-9021
																		                												                														
Sergey Chepchev
														Email: s_chepchev@kyzyltu.kz
				                					                																			                												                														
Aleksandr Кotov
Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences
														Email: abkotov-spb@mail.ru
				                					                																			                												                	Rússia, 							Saint-Peterburg						
U. Plotkina
														Email: jplotkina@yandex.ru
				                	ORCID ID: 0000-0001-6171-6051
				                	Código SPIN: 9300-0049
																		                												                														
Konstantin Shatagin
														Email: shat@igem.ru
				                					                																			                												                														
Nazerke Kasenova
														Email: nazeka_19.07.95zh@mail.ru
				                					                																			                												                														
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