Enviar artigo por via de e-mail EVIDENCES OF MINERAL MELTING IN THE ORES OF THE SVETLINSK GOLD DEPOSIT, SOUTH URALS, RUSSIA
- Autores: Vikent’eva O.V.1, Bortnikov N.S.1
-
Afiliações:
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
- Edição: Volume 513, Nº 2 (2023)
- Páginas: 206-211
- Seção: MINERALOGY
- ##submission.dateSubmitted##: 30.12.2023
- ##submission.datePublished##: 01.12.2023
- URL: https://bakhtiniada.ru/2686-7397/article/view/247159
- DOI: https://doi.org/10.31857/S2686739723602016
- EDN: https://elibrary.ru/BLPCSF
- ID: 247159
Citar
Acesso aberto
Acesso está concedido
Somente assinantes
Resumo
For the large Svetlinsk gold deposit (South Urals) evidences of partial melting of minerals and possible participation of polymetallic melts in the concentration and redistribution of gold and other metals are given. Finding of bismuth and antimony minerals in ores, among which there are gold minerals new to the deposit (pampaloite, montbrayite and aurostibite), specific mineral intergrowths (polymineral Sb–Bi–Pb–Te–Ag–Au drop inclusions), enrichment of early sulphides with Low-Melting-point Chalcophile Elements (LMCE), high formation temperatures for ore assemblages (up to 400°C), as well as the occurring metamorphism of amphibolite facies indicate the possibility of the formation of such melts. Polymetallic melts at the deposit could be formed both by partial melting of early sulphides and directly from hydrothermal fluids. The signs of melting also include simplectites of calaverite and native gold in the marginal parts of the large montbrayite grain.
Palavras-chave
Sobre autores
O. Vikent’eva
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Autor responsável pela correspondência
Email: ovikenteva@rambler.ru
Russia,
Moscow
N. Bortnikov
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Email: ovikenteva@rambler.ru
Russia,
Moscow
Bibliografia
- Mavrogenes J.A., Macintosh I.W., Ellis D.J. Partial melting of the Broken Hill galena-sphalerite ore – experimental studies in the system PbS-FeS-ZnS-(Ag2S) // Economic Geology. 2001. V. 96. P. 205–210.
- Frost B.R., Mavrogenes J.A., Tomkins A.G. Partial melting of sulfide ore during medium and high-grade metamorphism // Canadian Mineralogist. 2002. V. 40. P. 1–18.
- Tomkins A.G., Pattison D.R.M., Zaleski E. The Hemlo gold deposit, Ontario: an example of melting and mobilization of a precious metal-sulfosalt assemblage during amphibolite facies metamorphism and deformation // Economic Geology. 2004. V. 99. P. 1063–1084.
- Cook N.J., Ciobanu C.L., Mao J.W. Textural control on gold distribution in As-free pyrite from the Dongping, Huangtuliang and Hougou gold deposits, North China Craton (Hebei Province, China) // Chemical Geology. 2009. V. 264. P.101–121.
- Vikentyev I.V., Belogub E.V., Novoselov K.A., Moloshag V.P. Metamorphism of volcanogenic massive sulphide deposits in the Urals. Ore geology // Ore Geology Reviews. 2017. V. 85. P. 30–63.
- Tomkins A.G., Pattison D.R.M., Frost B.R. On the initiation of metamorphic sulfide anatexis // J Petrology. 2007. V. 48. P. 511–535.
- Tooth B., Ciobanu C.L., Green L., O’Neill B., Brugger J. Bi-melt formation and gold scavenging from hydrothermal fluids: an experimental study // Geochim Cosmochim Acta. 2011. V. 75. P. 5423–5443.
- Wagner T. Thermodynamic modeling of Au-Bi-Te melt precipitation from high temperature hydrothermal fluids: preliminary results // Mineral Exploration and Research: Digging Deeper. Proceedings of the 9th Biennial SGA Meeting, Dublin. 2007. P. 769–772.
- Douglas N., Mavrogenes J., Hack A., England R. The liquid bismuth collector model: an alternative gold deposition mechanism // AGC Abstracts. 2000. V. 59. P. 135.
- Ciobanu C.L., Cook N.J., Damian F., Damian G. Gold scavenged by bismuth melts: An example from Alpine shearremobilizates in the Highis Massif, Romania // Mineralogy and Petrology. 2006. V. 87. P. 351–384.
- Cave B.J., Barnes S.-J., Pitcairn I.K., Sack P.J., Kuikka H., Johnson S.C., Duran C.J. Multi-stage precipitation and redistribution of gold, and its collection by lead-bismuth and lead immiscible liquids in a reduced-intrusion related gold system (RIRGS); Dublin Gulch, western Canada // Ore Geology Reviews. 2019. V. 106. P. 28–55.
- Jian W., Mao J.W., Lehmann B., Cook N.J., Xie G.Q., Liu P., Duan C., Alles J., Niu Z.J. Au-Ag-Te-rich melt inclusions in hydrothermal gold-quartz veins, Xiaoqinling lode gold district, central China // Economic Geology. 2021. V. 116. P. 1239–1248.
- Сазонов В.Н., Попов Б.А., Григорьев Н.А., Мурзин В.В., Мецнер Э.И. Корово-мантийное оруденение в салических блоках эвгеосинклинали. Свердловск: УрО АН СССР, 1989. 112 с.
- Федосеев В.В., Рябов Ю.И., Гаджиева Л.А. Переоценка золоторудных месторождений Челябинской области – основа развития минерально-сырьевой базы АО “ЮГК” // Известия Тульского государственного университета. Науки о Земле. 2020. Вып. 4. С. 547–560.
- Vikent’eva O., Prokofiev V., Borovikov A., Kryazhev S., Groznova E., Pritchin M., Vikentyev I., Bortnikov N. Contrasting fluids in the Svetlinsk gold-telluride hydrothermal system, South Urals // Minerals. 2020. V. 10 (1). 37.
- Vikent’eva O.V., Shilovskikh V.V., Shcherbakov V.D., Moroz T.N., Vikentyev I.V., Bortnikov N.S. Montbrayite from the Svetlinsk gold-telluride deposit (South Urals, Russia): composition variability and decomposition // Minerals. 2023. V. 13(9). 1225.
- Cabri L.J. Phase relations in the Au–Ag–Te systems and their mineralogical significance // Economic Geology. 1965. V. 60. P. 1569–1606.
- Gather B., Blachnik R. Das System Gold-Wismut-Tellur // Z Metallkunde. 1974. V. 65. P. 653–656.
- Legendre B., Souleau C. Etude du systeme ternaire Au–Pb–Te // Soc Chim France Bull. 1972. V. 1. P. 473–479.
- Gather B., Blachnik R. Das ternäre System Gold-Antimon-Tellur // International Journal of Materials Research. 1976. V. 67. P. 395–399.
Arquivos suplementares
