Mineralogy of metamorphic magnetite-manganese ores at the Prakovce - Zimná Voda prospect (Spišsko-gemerské rudohorie Mts., Slovakia): The occurrence of REE-bearing allanite-subgroup minerals ferriakasakaite and ferriallanite

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F24%3A10136949" target="_blank" >RIV/00023272:_____/24:10136949 - isvavai.cz</a>

Result on the web

<a href="https://www.jgeosci.org/content/jgeosci.400_Myslan.pdf" target="_blank" >https://www.jgeosci.org/content/jgeosci.400_Myslan.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3190/jgeosci.400" target="_blank" >10.3190/jgeosci.400</a>

Result language

angličtina

Original language name

Mineralogy of metamorphic magnetite-manganese ores at the Prakovce - Zimná Voda prospect (Spišsko-gemerské rudohorie Mts., Slovakia): The occurrence of REE-bearing allanite-subgroup minerals ferriakasakaite and ferriallanite

Original language description

Manganese mineralization was discovered at the Zimná Voda occurrence near Prakovce located in the Spišsko-gemerské rudohorie Mountains, eastern Slovakia. The mineralization is hosted in the Early Paleozoic metamorphic rocks of the Gemeric Unit in the Western Carpathians and it represents the only occurrence of metamorphosed manganese mineralization discovered within the Drnava Formation (Devonian). Manganese minerals are directly associated with magnetite bodies forming isolated lenses of a strata-bound oxidic Fe-ores. The manganese mineralization underwent metamorphism during the Variscan and Alpine tectonometamorphic events, resulting in two types of distinct mineral assemblages. The older assemblage includes rhodonite-ferrorhodonite series, rhodochrosite, kutnohorite, spessartine, fluorapatite and quartz with magnetite impregnations. These assemblages are intersected by younger mineral assemblages present in veins and vugs. This later assemblage consists of rhodochrosite, kutnohorite, baryte, clino-suenoite to clino-ferro-suenoite, minerals of the epidote supergroup, quartz and relatively rare sulfidic mineralization including pyrite, galena, sphalerite and cobaltite along with hubnerite. This stage also features the formation of garnets predominantly composed of the andradite molecule, with locally preserved spessartine remnants in the garnet centres. The subsequent younger post-Variscan metamorphic event is characterized by a high influx of rare earth elements (REE), leading to the formation of a rare ferriallanite-(Ce), ferriallanite-(La), ferriakasakaite-(La) and ferriakasakaite-(Ce). Allanite-subgroup minerals form a strongly zonal polycrystalline dark brown aggregates with size up to 50 μm, generated from hydrothermal fluids affecting the mineral composition of the late-stage mineral assemblage.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10504 - Mineralogy

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Geosciences

ISSN

1802-6222

e-ISSN

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Volume of the periodical

69

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

19

Pages from-to

231-249

UT code for WoS article

001467762500004

EID of the result in the Scopus database

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