Hypogene alteration of base-metal mineralization at the Václav vein (Březové Hory deposit, Příbram, Czech Republic): the result of recurrent infiltration of oxidized fluids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F24%3A10136474" target="_blank" >RIV/00023272:_____/24:10136474 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-163X/14/10/1038" target="_blank" >https://www.mdpi.com/2075-163X/14/10/1038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/min14101038" target="_blank" >10.3390/min14101038</a>

Result language

angličtina

Original language name

Hypogene alteration of base-metal mineralization at the Václav vein (Březové Hory deposit, Příbram, Czech Republic): the result of recurrent infiltration of oxidized fluids

Original language description

The Václav vein (Březové Hory deposit, Příbram ore area, Czech Republic) is a base-metal vein containing minor Cu-Zn-Pb-Ag-Sb sulfidic mineralization in a usually hematitized gangue. A detailed mineralogical study using an electron microprobe revealed a complicated multistage evolution of the vein. Early siderite and Fe-rich dolomite were strongly replaced by assemblages of hematite+rhodochrosite and hematite+kutnohorite/Mn-rich dolomite, respectively. In addition, siderite also experienced strong silicification. These changes were associated with the dissolution of associated sulfides (sphalerite, galena). The following portion of the vein contains low-Mn dolomite and calcite gangue with Zn-rich chlorite, wittichenite, tetrahedrite-group minerals, chalcopyrite, bornite, and djurleite, again showing common replacement textures in case of sulfides. The latest stage was characterized by the input of Ag and Hg, giving rise to Ag-Cu sulfides, native silver (partly Hg-rich), balkanite, and (meta)cinnabar. We explain the formation of hematite-bearing oxidized assemblages at the expense of pre-existing &quot;normal&quot; Příbram mineralization due to repeated episodic infiltration of oxygenated surface waters during the vein evolution. Episodic mixing of ore fluids with surface waters was suggested from previous stable isotope and fluid inclusion studies in the Příbram ore area. Our mineralogical study thus strengthens this genetic scenario, illustrates the dynamics of fluid movement during the evolution of a distinct ore vein structure, and shows that the low content of ore minerals cannot be necessarily a primary feature of a vein.

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

10505 - Geology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Minerals

ISSN

2075-163X

e-ISSN

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Volume of the periodical

14

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

42

Pages from-to

1-42

UT code for WoS article

001342783700001

EID of the result in the Scopus database

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