Peter Koděra
Comenius University in Bratislava
19Publications
6H-index
99Citations
Publications 19
Newest
Published on Feb 1, 2018in Mineralogy and Petrology 1.66
Juraj Majzlan24
Estimated H-index: 24
(Schiller International University),
Khulan Berkh1
Estimated H-index: 1
(Schiller International University)
+ 7 AuthorsJaroslav Lexa14
Estimated H-index: 14
(Slovak Academy of Sciences)
In this contribution, we report new data on mineralogy, alteration patterns, geochemistry, fluid properties and source of fluids for the deposit Nova Baňa, one of the smaller epithermal deposits in the Middle Miocene Stiavnica andesite stratovolcano (Western Carpathians, Slovakia). Ore veins and the associated rocks were studied in samples from outcrops and old mines, grab samples, and bore holes from the central part of the deposit (ore structures Althandel, Jozef, Jakub, Vavrinec), northern pa...
2 Citations Source Cite
Published on Dec 1, 2018in Mineralium Deposita 3.37
Peter Koděra6
Estimated H-index: 6
(Comenius University in Bratislava),
Jaroslav Kozák1
Estimated H-index: 1
(Comenius University in Bratislava)
+ 6 AuthorsFrantišek Bakos2
Estimated H-index: 2
The Biely Vrch deposit in the Western Carpathians is assigned to the shallow, sulfide-poor porphyry gold deposit type and has an exceptionally low Cu/Au ratio. According to 3-D geochemical models, there is a limited spatial correlation between Au and Cu due to the primary introduction of gold by a salt melt and Cu by low-density vapor. Despite a rough spatial correlation of gold grades with quartz stockwork intensity, gold is hosted mostly by altered rock, exclusively in native form. Three main ...
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Published on Oct 1, 2018in Mineralogy and Petrology 1.66
Alexander Kubac (Comenius University in Bratislava), Martin Chovan9
Estimated H-index: 9
(Comenius University in Bratislava)
+ 4 AuthorsRastislav Vojtko10
Estimated H-index: 10
(Comenius University in Bratislava)
The Au-Ag-Pb-Zn-Cu epithermal deposit Banska Hodrusa of intermediate-sulphidation type is located in the Middle Miocene Stiavnica stratovolcano on the inner side of the Carpathian arc in Slovakia. This deposit represents an unusual subhorizontal multi-stage vein system, related to processes of underground cauldron subsidence and exhumation of a subvolcanic granodiorite pluton. Veins are developed on a low-angle normal shear zone, possibly representing a detachment zone in andesitic wall rocks th...
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Published on Aug 1, 2018in Chemical Geology 3.57
Svetlana Grishina2
Estimated H-index: 2
(Russian Academy of Sciences),
Peter Koděra6
Estimated H-index: 6
(Comenius University in Bratislava)
+ 6 AuthorsEvgenii M. Roginskii2
Estimated H-index: 2
(Ioffe Institute)
Abstract Anhydrous chlorides - CaCl 2 , and KCaCl 3 (chlorocalcite) were identified as mineral inclusions in halite from the Siberian Large Igneous Province at the contact of magmatic intrusions and evaporates. Chlorocalcite was also found as daughter mineral in polyphase hypersaline inclusions. While Raman spectra of KCaCl 3 (chlorocalcite) in natural inclusions are similar to spectra of synthetic analogue, the Raman spectra of natural CaCl 2 do not correspond to the published Raman spectra of ...
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Published on Sep 1, 2017in Mineralogy and Petrology 1.66
Vladimír Bilohuščin1
Estimated H-index: 1
(Comenius University in Bratislava),
Pavel Uher18
Estimated H-index: 18
(Comenius University in Bratislava)
+ 3 AuthorsPeter Bačík10
Estimated H-index: 10
(Comenius University in Bratislava)
Borate minerals of the ludwigite group (LGM) and szaibelyite 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 Vysoka – Zlatno Cu-Au porphyry-skarn deposit, located within the Stiavnica Neogene stratovolcano, Western Carpathians, central Slovakia. The skarn is developed along the contact of Miocene granodiorite to quartz-diorite porph...
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Published on Jan 1, 2017in European Journal of Mineralogy 1.19
Peter Koděra6
Estimated H-index: 6
(Comenius University in Bratislava),
Ágnes Takács3
Estimated H-index: 3
(Eötvös Loránd University)
+ 4 AuthorsPeter Antal1
Estimated H-index: 1
Javorieite, KFeCl 3 , is a new mineral, commonly hosted by salt melt inclusions enclosed in vein quartz in the Biely Vrch porphyry gold deposit, in the Central Slovakia Volcanic Field in the Western Carpathians. The mineral name refers to the Javorie stratovolcano, which hosts most porphyry gold systems in this volcanic field. Within the inclusions, javorieite occurs in the form of small (up to 15 μm) green anhedral crystals with high relief, which melt in the range 320–338 °C when heated. It is...
2 Citations Source Cite
Published on Jun 1, 2015in Mineralogical Magazine 1.74
Pavel Uher18
Estimated H-index: 18
(Comenius University in Bratislava),
Stanislava Milovská3
Estimated H-index: 3
(Slovak Academy of Sciences)
+ 3 AuthorsVladimír Bilohuščin1
Estimated H-index: 1
(Comenius University in Bratislava)
Kerimasite {Ca3}[Zr2](![Formula][1] )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 granodiorite porphyry intrusion in Vysoka-Zlatno Cu-Au skarn-porphyry deposit, the Stiavnica stratovolcano, Central Slovakia. Kerimasite forms...
1 Citations Source Cite
Published on Jul 1, 2015in Canadian Mineralogist 0.94
Peter Bačík10
Estimated H-index: 10
(Comenius University in Bratislava),
Peter Koděra6
Estimated H-index: 6
(Comenius University in Bratislava)
+ 2 AuthorsMichal Jánošík1
Estimated H-index: 1
(Comenius University in Bratislava)
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 central zones is accompanied by allanite-(Ce) to epidote, fluorapatite, Al-rich titanite, magnetite, rutile, ilmenite, and pyrite. The tourmaline chemical ...
4 Citations Source Cite
Published on Jun 1, 2014in Geology 5.07
Peter Koděra6
Estimated H-index: 6
(Comenius University in Bratislava),
Christoph A. Heinrich57
Estimated H-index: 57
(ETH Zurich)
+ 1 AuthorsJaroslav Lexa14
Estimated H-index: 14
(Slovak Academy of Sciences)
The recently discovered Biely Vrch deposit in the Western Carpathian magmatic arc is the most extreme example of a porphyry gold deposit, being practically free of copper, molybdenum or any other sulfide minerals. Microanalytical data on fluid inclusions in quartz veinlets, including a characteristic type of banded veinlets, show that this deposit formed from nearly anhydrous Fe-K-Na-Cl salt melts containing ∼10 ppm Au, coexisting with hydrous vapor of very low density. This exceptional fluid ev...
17 Citations Source Cite
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