Ore-bearing metasomatites of central part of the Ukrainian Shield (USh): prognostic, prospecting and general geological significance

Nechaev, S. V.; Syomka, V.O.

doi:10.15407/gof.2012.31.012

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…To date, numerous Li-rich dykes have been discovered in this region by borehole prospecting (e.g. Nechaev et al , 1991; Nechaev and Syomka, 2012; Eremenko et al , 1996; Vozniak et al , 2000; Vozniak and Pavlyshyn (2001); Ivanov and Lysenko, 2001; Ivanov et al , 2011; Hrinchenko et al , 2016; Bondarenko et al , 2019). However, very few data on the Li-mineralisation are available.…”

Section: Introductionmentioning

confidence: 99%

Fine-grained petalite and spodumene dykes in the Stankuvatske Li-deposit, Ukrainian Shield: products of tectono–metamorphic recrystallisation

Kurylo

Uher

Broska

et al. 2022

MinMag

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The Paleoproterozoic (~2.0−1.8 Ga) Stankuvatske Li deposit (Ukrainian Shield, Central Ukraine) represents an uncommon case of recrystallised, fine-grained petalite  spodumene metapegmatite dykes with LCT affinity hosted in amphibolites and metaultrabasic rocks. The metapegmatite dykes show remnants of primary, pre-metamorphic zoning, with dominant magmatic albite, Kfeldspar, quartz, Li-phases (petalite, spodumene, rarely triphylite, and montebrasite), and accessory muscovite, fluorapatite, columbite-(Fe), tantalite-(Fe), cassiterite, Ta-rich rutile, zincoand ferronigerite, gahnite, pyrite, sphalerite, and zircon. The parental magma of the investigated metapegmatites was peraluminous, and enriched in Li and P but relatively poor in B and F during

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Section: Introductionmentioning

confidence: 99%

Fine-grained petalite and spodumene dykes in the Stankuvatske Li-deposit, Ukrainian Shield: products of tectono–metamorphic recrystallisation

Kurylo

Uher

Broska

et al. 2022

MinMag

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Rare-earth accessories and secondary minerals in plagiogneisses from the Stankuvatske Li-deposite

Kurylo¹,

Bondarenko²

2020

Geohim. rudoutvorennâ

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The Stankuvatske Li deposit (SD) is situated at western flank of the Lypniazka structure (Ingul megablock of the Ukrainian Shield). Knowledge about REE content in host metamorphic rocks is based on the results of bulk chemical analysis, but their minerals have not been determined. For the first time rare-earth mineralization of the Stankuvatsky lithium deposit has been investigated in fine-grained gneiss with «augen» and schistose structure, porphiroblastic texture, formed as result of tectonical alteration. Our investigations were carried out using petrographic and microprobe analysis (EPMA). Mineralogically gneisses consist of quartz, plagioclase, zoizite, biotite, graphite, chlorite and abundant sulphides mainly represented by pyrite, arsenopyrite, sphalerite, molibdenite. Accessory minerals presented by titanite, apatite, monazite, zircon and coffinite. Gneisses have been subjected to deformation and hydrothermal — metasomatic alteration. An investigation of rock-forming and accessory minerals allows to revel low-temperature alterations of primary allanite by bastnäsiteand chlorite with formation of secondary bastnäsite-chlorite-coisite-pyrite association with «coronary» texture. The penetration of S, F, CO2, H2O enriched fluids were caused disintegration, partial redistribution and reprecipitation of rare earth elements. As result synhysite-chlorite-pyrite association was formed.

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Ore bearing factors of breaking-block structures of the Ukrainian shield

Yaroschuk

Vaylo

Osmachko

et al. 2019

Geofizicheskiy Zhurnal

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Введение. Украинский кристаллический щит имеет разломно-блоковое строение, тектоническое районирование которого включает шесть мегаблоков, три межблоковые шовные зоны и региональные глубинные долгоживущие разломы. Подавляющее значение в локализации оруденения имеют именно региональные и локальные зоны разломов [Нечаев и др., 2019а,б], являющиеся наиболее флюидопроводимыми структурами. Геодинамический режим этапов развития мегаструктур,

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Ore-bearing metasomatites of central part of the Ukrainian Shield (USh): prognostic, prospecting and general geological significance

Cited by 3 publications

References 3 publications

Fine-grained petalite and spodumene dykes in the Stankuvatske Li-deposit, Ukrainian Shield: products of tectono–metamorphic recrystallisation

Fine-grained petalite and spodumene dykes in the Stankuvatske Li-deposit, Ukrainian Shield: products of tectono–metamorphic recrystallisation

Rare-earth accessories and secondary minerals in plagiogneisses from the Stankuvatske Li-deposite

Ore bearing factors of breaking-block structures of the Ukrainian shield

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