Pavel Uher

Comenius University Bratislava · Department of Mineralogy Petrology and Economic Geology

The beryllium silicate minerals phenakite and bertrandite have been identified in granitic pegmatite dykes of beryl-columbite subtype of Variscan age (~340-355 Ma), associated with S- to I-type granitic rocks of the Tatric Superunit, Western Carpathians (Slovakia). These two beryllium silicates and associated minerals were characterized by elect...

The Palaeoproterozoic (~2.0−1.8 Ga) Stankuvatske Li deposit (Ukrainian Shield, Central Ukraine) represents an uncommon case of recrystallised, fine-grained petalite ± spodumene meta-pegmatite dykes with LCT affinity hosted in amphibolites and meta-ultrabasic rocks. The meta-pegmatite dykes show remnants of primary, pre-metamorphic zoning, with domi...

EPMA conditions used for each element. Mnz = monazite; Xtm = xenotime; Ap = apatite; Aln-Czo = allanite-clinozoisite; Hld-Hin = hellandite-hingganite; n.a. = not analysed Note: Wrong DOI https://doi.org/10.1017/S0007123422000011

Two contrasting reaction coronae were developed around rare earth element (REE) accessory phosphates in Variscan metagranitic rocks, which have been overprinted by Alpine blastomylonitisation from the Fabova Hol’a Massif, in the Veporic Unit, Western Carpathians, Central Slovakia. The Th–U–Pb total EPMA age determination of primary magmatic monazit...

A new occurrence of epidote-(Sr) [CaSrAl 2 Fe ³⁺ (Si 2 O 7 )(SiO 4 )(OH)], Sr-REE-rich epidote and Sr-rich allanite-(Ce) is located in Lower Cretaceous, Sr-rich hydrothermally altered leucocratic dykes penetrating alkaline igneous rocks (teschenites) near the Nový Jičín town (the Silesian Unit, Outer Western Carpathians). The dykes contain phenocry...

A hydrothermal quartz vein with REE-U-Au mineralization in the Zimná Voda (Gemeric Unit, Western Carpathians, Slovakia) is associated with contact metamorphism between Permian granites and host phyllites and metaquartzites. It contains unique REE minerals from the monazite and xenotime groups. Monazite-(Ce), monazite-(Nd), monazite-(Sm), and Gd-dom...

Two representative peraluminous A-type rhyolite samples from the Poniky area (the Drienok Nappe) in the Inner Western Carpathians (central Slovakia) were dated using the LA-ICP-MS U-Pb zircon method. These geochronological data represent the first in-situ isotopic dating study undertaken on these volcanic rocks. Oscillatory zoned zircon crystals yi...

Pegmatites with rare-element mineralization from the Aswan area in southern Egypt intruded the post-orogenic Pan-African granitic rocks and the associated gneisses. The granitic pegmatites show a regular pattern of concentric zoning and display a weak affinity to the Nb-Y-F (NYF) pegmatite family. These pegmatites consist mainly of K-feldspar, albi...

Permian biotite leucogranites to granite porphyries and rhyolites form small intrusions in several Alpine tectonic units in the Western Carpathians and the Pannonian region (Slovakia and Hungary). Their A-type signature is inferred from main- and trace-element geochemistry, with high K, Rb, Y, REE, Zr, Th, Nb, Fe/Mg and Ga/Al, low Al, Mg, Ca, P, Sr...

The study reveals the relationships between crystal-chemical and genetic properties of beryl from several rare-element granitic pegmatites of the LCT family from the Damara Belt, Namibia. Based on their chemical compositions, the studied beryl samples can be divided into two groups. Beryl from the first group (the Engelbrecht's and Etusis pegmatite...

Microlite-group minerals occur as common replacement products after primary and secondary columbite-group minerals (CGM) in albitised blocky K-feldspar and in coarse-grained, muscovite-rich units of the Schinderhübel I, Scheibengraben and Bienergraben beryl–columbite pegmatites in the Maršíkov District (Silesian Unit, Bohemian Massif, Czech Republi...

Accessory minerals of columbite and microlite groups were identified in granitic pegmatite dike intruded into parental Carboniferous (~350 Ma) leucogranites of the crystalline basement of the Tatric Unit, Central Western Carpathians. The pegmatite is situated on E slope of Bystrý Hill near Liešťany village, the Strážovské vrchy Mts., Slovakia. Prim...

Accessory monazite-(Ce), -(La), -(Nd), cheralite (monazite-group minerals, MGM) and xenotime-(Y) are rare magmatic accessory minerals in subsolvus A-type granites and related aplite and pegmatite dykes in the Velence Hills, Transdanubian Unit, Hungary. The MGM and xenotime-(Y) form ≤ 200 μm euhedral to subhedral crystals in association with allanit...

We studied compositional variations in columbite group minerals (CGM) from several granitic pegmatites of the beryl-columbite subtype in the Maršíkov district, Silesian Domain of the Bohemian Massif, Czech Republic. The CGM are characterized by distinct zoned patterns in BSE images. Primary magmatic homogeneous to oscillatory zoning is preserved in...

An assemblage of alunite-supergroup minerals (ASM), rhabdophane-group minerals (RGM), goethite and associated clay minerals occurs in Permian A-type microgranite in the eastern part of the Velence Hills, Hungary. The secondary sulfates/phosphates include jarosite, Pb-rich jarosite and alunite, corkite, hinsdalite and rhabdophane-(Ce), -(La) and -(N...

A unique assemblage of hedyphane-group minerals of the apatite supergroup associated with galena, cerussite, and calcite occurs in a Permian aplite dike crosscutting orthogneisses belonging to the pre-Alpine basement of the Veĺký Zelený Potok Valley in the Veporic Unit, Western Carpathians, Central Slovakia. The secondary Ca-Pb phosphates include p...

The recently rediscovered small D6e granitic pegmatite body, enclosed in amphibole gneiss of the Sobotín amfibolite massif (Jeseníky Mountains, Czech Republic), is characterized by numerous accessory minerals, including common columbite group minerals (CGM) and minor microlite and fersmite related to blocky K-feldspar unit. The CGM show complex int...

Titanite belongs to the common accessory minerals in Variscan (~ 360-350 Ma) metaluminous to slightly peraluminous tonalites to granodiorites of I-type affinity in the Tatric and Veporic Units, the Western Carpathians, Slovakia. It forms brown tabular prismatic-dipyramidal crystals (~ 0.5 to 10 mm in size) in association with quartz, plagioclase, a...

This contribution reviews published and our new geochronological data on the Permian-Triassic tectono-magmatic events determined from the researched areas of the Slovak Inner Western Carpathians (IWC) and the Austrian Austroalpine (AA) units by zircon U-Pb SIMS. Most of the dated rocks bear the signatures of the superimposed Late Jurassic and/or Cr...

Minerals of the rhabdophane group and the alunite supergroup in microgranite: products of low-temperature alteration in a highly acidic environment from the Velence Hills, Hungary – ERRATUM - Martin Ondrejka, Peter Bačík, Tomáš Sobocký, Pavel Uher, Radek Škoda, Tomáš Mikuš, Jarmila Luptáková, Patrik Konečný

An error was introduced in the final editing stages of production of this paper in Mineralogical Magazine, 82(6), 1277–1300 under the headings Discussion, subheading: ASM and RGM compositional variations, p 1296; the word “should” was replaced mistakenly by “shouldn’t” The correct text is: “All these data together with Fe-rich RGM from the Velence...

Crystal-chemical properties, and octahedral substitution role in particular, of beryl from weakly fractionated intragranitic pegmatite at Predné Solisko, Vysoké Tatry Mts. (Slovakia) is described in detail. The studied beryl was found in granitic pegmatite derived from biotite I-type granodiorite. It has a weakly zoned core with variable Fe and Mg...

An assemblage of alunite-supergroup minerals (ASM), rhabdophane-group minerals (RGM), goethite and associated clay minerals occur in Permian A-type porphyritic microgranite in the eastern part of the Velence Hills, Hungary. The secondary sulfates/phosphates include jarosite, plumbian jarosite and alunite, corkite, hinsdalite, rhabdophane-(Ce), -(La...

The simply zoned Šejby pegmatite of beryl–columbite subtype is enclosed in migmatitized gneisses – country rocks of the southern part of the Central Moldanubian Plutonic Complex, Bohemian Massif, Czech Republic. The columbite-group minerals (CGM) occur mostly in blocky K-feldspar unit. Primary magmatic CGM [columbite-(Fe)−tantalite-(Fe)], show an i...

The new mineral fluorarrojadite-(BaNa), ideally BaNa4CaFe13Al(PO4)11(PO3OH)F2 was found on the dump of Elisabeth adit near Gemerská Poloma, Slovakia. It occurs in hydrothermal quartz veins intersecting highly fractionated, topaz–zinnwaldite S-type leucogranite. Fluorarrojadite-(BaNa) is associated with fluorapatite, ‘fluordickinsonite-(BaNa)’, trip...

Granitic pegmatites are relatively common rocks in pre-Alpine (Paleozoic) crystalline basement of the Tatric and Veporic Units of the Western Carpathians. They are genetically connected with orogen-related Variscan granitic rocks of S-or I-type affinity. The most evolved West-Carpathian pegmatites contain beryl and/or Nb-Ta oxide minerals (columbit...

Four beryl samples from various Namibian localities Etusis (ETU), Kudoberg (KUD), Baobismond (BAO) – Karibib and Engle Brecht (EN) – Strathmore) were investigated by wide spectrum of analytical methods. The studied beryls are derived from complex-type petalite-subtype pegmatites of LCT family. BAO and KUD samples are assigned to normal beryls (0.99...

Three representative A-type rhyolitic rock samples from the Muráň Nappe of the inferred Silicic Unit of the Inner Western Carpathians (Slovakia) were dated using the high-precision SIMS U-Pb isotope technique on zircons. The geochronological data presented in this paper is the first in-situ isotopic dating of these volcanic rocks. Oscillatory zoned...

Tourmaline is an important gangue mineral in a large number of Cretaceous siderite-quartz-sulphide hydrothermal veins in the Gemeric Unit, Slovak Ore Mountains, Slovakia, such as Dobšiná, Vlachovo, Rožňavské Bystré, Hnilčík, Rakovnica, Novoveská Huta, Gretla, Rudňany, and Bindt. In this study we combine by electron microprobe analysis, powder X-ray...

Fluorcaphite [SrCaCa3(PO4)3F] is a rare strontium-calcium member of the apatite supergroup which was previously known only from the Khibiny and Lovozero alkaline complexes. This paper presents evidence of a third fluorcaphite occurrence. It was found in hydrothermally altered Lower Cretaceous teschenite, which forms an intrusive body (probably a si...

This paper presents geochronological data for the volcanic dykes located in the northern Považský Inovec Mts. The dykes are up to 5 m thick and tens to hundreds of metres long. They comprise variously inclined and oriented lenses, composed of strongly altered grey-green alkali basalts. Their age was variously interpreted and discussed in the past....

The diversity of Ti-Sn-W-Nb-Ta oxide minerals within a complex granite-related magmatic-hydrothermal system was studied by electron microprobe on the example of the Cínovec (Zinnwald) granite cupola containing a well-known Sn-W-Li deposit. The Cínovec granite cupola is a late Variscan (ca. 322 Ma), strongly fractionated A-type pluton composed of up...

Borate minerals of the ludwigite group (LGM) and szaibélyite in association with hydroxylclinohumite, clinochlore, a serpentine mineral, magnesian magnetite, spinel, magnesite, dolomite and sulphide minerals, occur in a magnesian exoskarn in the R-20 borehole located in the Vysoká – Zlatno Cu-Au porphyry-skarn deposit, located within the Štiavnica...

The Middle Carnian (Julian) detritic sediments of the Lunz Formation were deposited during of the so-called Carnian Pluvial Event. They are the only siliciclastic sediments embedded in purely carbonatic formations. The paper brings the first provenance analysis of this formation from the Western Carpathians (Slovakia), where it occurs in the Hronic...

Silicate minerals enriched in V, Cr and Mn including garnets and epidote-supergroup members, in association with amphiboles, albite, hyalophane, titanite, chamosite, sulfides and other minerals occur in Devonian black shales near Čierna Lehota in the Strážovské vrchy Mountains, Slovakia. The garnets have high concentrations of V, Cr and Mn (up to 1...

The platinum-group minerals (PGM) occur in Triassic-Jurassic metapyroxenite from allochtonous serpentinite body near Jasov village, Meliatic Unit, Inner Western Carpathians, eastern Slovakia. The PGM assemblage originated during two genetic stages. The primary magmatic stage 1, formed under very low fO 2 ; it comprises older generation of PGM: laur...

A variety of rare earth elements-bearing (REE) accessory mineral breakdowns were identified in granitic orthogneisses from the pre-Alpine basement in the Veporic Unit, Central Western Carpathians, Slovakia. The Ordovician granitic rocks were subjected to Variscan metamorphic-anatectic overprint in amphibolite facies. Chemical U-Th-Pb dating of mona...

Nine beryl samples from Western Carpathians, Slovakia, were investigated by infrared and Raman spectroscopy and differential thermal analysis. Two types of water H2O I and H2O II were detected. Infrared spectroscopy proved the presence of water type I and II in the presence of alkali cations with several bands: (1) symmetric stretching vibration—ν1...

Perovskite (Prv) was discovered in an abyssal harzburgite from a “mélange” type blueschist-bearing accretionary wedge of the Western Carpathians (Meliata Unit, Slovakia). Perovskite-1 formation in serpentinized orthopyroxene may be simplified by the mass-balance reaction: Ca

An interesting association of phosphate minerals (fluorapatite, triplite, arrojadite-group minerals and viitaniemiite) was studied from intra-granitic hydrothermal quartz veins with minor amounts of albite, orthoclase, muscovite, fluorite, rhodochrosite, arsenopyrite, pyrite, bismuthinite and kobellite. The veins occur in highly evolved, Permian to...

The Cr–Ni-rich micas, Ni–Co sulphide phases and associated minerals occur in a small body of listvenite, an extensively altered serpentinite, in Lower Palaeozoic paragneisses near Muránska Zdychava village in Slovenské Rudohorie Mts. (Veporic Superunit, central Slovakia). The main rock-forming minerals of the listvenite are magnesite, dolomite and...

An uncommon assemblage of primary and secondary accessory REE mineralswas identified in a Permian A-type granite clast in polymict conglomerates intercalated in the Cretaceous flysch sequence of the Pieniny Klippen Belt, Western Carpathians, northwest Slovakia. A detailed electron-microprobe study of the granite reveals extensive subsolidus alterat...

Iron-titanium oxides represent significant mineral phase (≤1.5 vol. %) in the A-type rhyolites from the Silicic Superunit, Western Carpathians, central Slovakia. They are composed of magnetite, ilmenite, and rutile showing typical lamellae “trellis - sandwich” type texture as a result of oxy-exsolution of former Ti-rich magnetite. A composite type...

Chlorine-enriched tourmaline was found in a hydrothermally altered Miocene diorite porphyry at the Biely Vrch porphyry gold deposit (Central Slovakia) as a relatively rare alteration mineral forming radial aggregates composed of thin prismatic crystals in the central part of quartz veinlets filled by calcite. Zoned tourmaline with Cl-enriched centr...

Kerimasite {Ca3}[Zr2](SiFe3+2)O12, a rare member of the garnet supergroup, has been identified in association with andradite–grossular and their hydrated analogues, monticellite, perovskite, clintonite, anhydrite, hydroxylellestadite–fluorellestadite, spinel, magnetite, brucite, valeriite and other minerals from a Ca-Mg skarn in the exocontact of a...

Chromium-rich kyanite, magnesiostaurolite and corundum (ruby) were found in ultrahigh-pressure (UHP) eclogites associated with garnet peridotite and serpentinite from Pohorje Mountains (Eastern Alps) and the Tromsø Nappe (Northern Scandinavian Caledonides). The concentrations of Cr2O3 in kyanite and magnesiostaurolite from the Pohorje Mts. (17.0 an...

The Košice meteorite was observed to fall on 28 February 2010 at 23:25 UT near the city of Košice in eastern Slovakia and its mineralogy, petrology, and geochemistry are described. The characteristic features of the meteorite fragments are fan-like, mosaic, lamellar, and granular chondrules, which were up to 1.2 mm in diameter. The fusion crust has...

A unique case of low-temperature metamorphic (hydrothermal) overprint of peraluminous, highly evolved rare-metal S-type granite is described. The hidden Dlhá dolina granite pluton of Permian age (Western Carpathians, eastern Slovakia) is composed of barren biotite granite, mineralized Li-mica granite and albitite. Based on whole-rock chemical data...

This contribution reviews and affords new insights into the crystal chemistry of gadolinite-datolite group (GDG) silicates by re-examination of published and unpublished analytical data. More than 200 electron microprobe analyses (EMPA) and data from both single-crystal and powder X-ray diffraction of 53 samples of GDG silicates were collected to s...

Grossular garnet, enriched in Cr and V, forms rare subhedral crystals (up to 40 μm in size) with diopside, albite, K-feldspar, titanite and clinozoisite in Ca-skarn near Dubová, Malé Karpaty Mts., Western Carpathians (SW Slovakia). The skarn is situated along the contact between Devonian limestones and Carboniferous granitic rocks. Grossular crysta...

Monazite-(Ce) represents a characteristic magmatic accessory mineral of the Hercynian peraluminous S-type granites to granodiorites and related granitic pegmatites of the Bratislava Granitic Massif (BGM), Malé Karpaty Mountains, Central Western Carpathians, SW Slovakia. Monazite forms euhedral to subhedral crystals, up to 200 μm in size, usually it...

The quartz veins with primary fluorapatite, xenotime-(Y), monazite-(Ce) to monazite-(Nd), uraninite, and second-ary florencite-(Ce) and goyazite occur in Lower Devonian metavolcano-sedimentary sequence of the Gelnica Group, Gemeric Superunit, the Central Western Carpathians (eastern Slovakia). They represent an example of hydrothermal REE–U mineral...

The granitic pegmatite dike intruded the Cretaceous UHP rocks at Visole, near Slovenska Bistrica, in the Pohorje Mountains (Slovenia). The rock consists mainly of K-feldspar, albite and quartz, subordinate muscovite and biotite, while the accessory minerals include spessartine-almandine, zircon, ferrocolumbite, fluorapatite, monazite( Ce), uraninit...

The Detva-Biely Vrch deposit represents a new economic Au-porphyry mineralization discovered in central Slovakia. The deposit is located in the central zone of the Middle Miocene Javorie stratovolcano, and shares many properties typical for Au-porphyry deposits. Parental intrusion of diorite to andesite porphyry and its andesitic volcanic host rock...

The Bratislava - Jezuitské Lesy granitic pegmatite forms a relatively narrow dike (up to 1 - 2 m thick) in parental Hercynian (~350 Ma) S-type granodiorite to granite. The pegmatite internal zoning consists of a coarse-grained quartz-feldspar-muscovite zone, locally with transition into a graphic pegmatite, blocky K-feldspar and massive quartz. An...