CHEMICAL AND GEOCHEMICAL CHARACTERISTICS OF THE ČEMERNICA ANTIMONITE DEPOSIT IN THE MID-BOSNIAN SCHIST MOUNTAINS
Item
Title (Dublin Core)
eng
CHEMICAL AND GEOCHEMICAL CHARACTERISTICS OF THE ČEMERNICA ANTIMONITE DEPOSIT IN THE MID-BOSNIAN SCHIST MOUNTAINS
hrv
KEMIJSKE I GEOKEMIJSKE KARAKTERISTIKE KVARCNE ŽICE ČEMERNICE U ŠKRILJAVOM GORJU SREDNJE BOSNE
Description (Dublin Core)
eng
The Čemernica Sb-Zn-Hg-W quartz vein system is situated in Lower Palaeozoic metasediments formed under 3-5 kbars and 350° to 450 °C, intruded by Upper Palaeozoic rhyolites. K-Ar dating indicated three metamorphic phases. The first, 343 Ma old affected phyllite rocks, the second 120-90 Ma metamorphosed rhyolites and the third one, 46 to 37 Ma caused formation of ottrelite schist, host rocks of ore deposit. The Čemernica vein (NW-SE), 1,5 km long, and over 350 m deep, on average 0,67 m thick, is faulted in four separated parts:
»Southern vein«: »Erbstollcn vein«; »Main vein* and »NW-vein«. Structures of the veins are massive, banded, rarely brecciated. Par-agenesis: quartz I (50-95% of ore mass) as the main gangue mineral; antimonite I, II, sphalerite I, II. cinnabar as the main ore minerals; subordinate are chalcedony, siderite, ferberite, jamesonite.berthierite, boulangerile, plagionite, arsenopyrite, scarce arc pyrite I, II, marcasite, pyrrhotite, barite, chalcopyrite I, II, tetrahedrite and enargite, whereas accessories are galena, quartz II, realgar, gold and mineral »X«.
Chemical analysis of 177 ore samples taken from old Saxon and Austrian mining works gave 4.33% Zn, 2,22% Sb and 137 gr/t Ag. Fifteen samples gave trace to 0.1% Hg and eight samples trace to 0.l gr/t Au. Untouched part ol the »Main vein« gave5.9(1% Zn, 8.93%Sb and 126 g/t Ag. Remnant ore gave 2.60-3.28% Zn, 0.69-0.73% Sb and 161 to 190 gr/t Ag. Entire proved, probable and posssible ore reserves (306.000 t) have 5.9% Zn, 4.0% Sb and 114 gr/t Ag.
The 34 S of antimonite is +2.6 ‰ and of sphalerite +3.7‰ indi¬cating juvenile origin of sulphur, Fluid inclusion study of quartz iden-tified three types of fluids: Variscan NaCI-KCI-H2O type related to the Late Palaeozoic granite (rhyolite) megmatism, post-Variscan NaCl-CaCl2 + MgCl2)-H2O type formed by admixing of hot saline connate waters originated from the Late Permian evaporite complex and meta-morphogenic aqueous-curbonic fluids which overprinted ore deposit with CO2, CH4 and N2 components in Late Tertiary.
»Southern vein«: »Erbstollcn vein«; »Main vein* and »NW-vein«. Structures of the veins are massive, banded, rarely brecciated. Par-agenesis: quartz I (50-95% of ore mass) as the main gangue mineral; antimonite I, II, sphalerite I, II. cinnabar as the main ore minerals; subordinate are chalcedony, siderite, ferberite, jamesonite.berthierite, boulangerile, plagionite, arsenopyrite, scarce arc pyrite I, II, marcasite, pyrrhotite, barite, chalcopyrite I, II, tetrahedrite and enargite, whereas accessories are galena, quartz II, realgar, gold and mineral »X«.
Chemical analysis of 177 ore samples taken from old Saxon and Austrian mining works gave 4.33% Zn, 2,22% Sb and 137 gr/t Ag. Fifteen samples gave trace to 0.1% Hg and eight samples trace to 0.l gr/t Au. Untouched part ol the »Main vein« gave5.9(1% Zn, 8.93%Sb and 126 g/t Ag. Remnant ore gave 2.60-3.28% Zn, 0.69-0.73% Sb and 161 to 190 gr/t Ag. Entire proved, probable and posssible ore reserves (306.000 t) have 5.9% Zn, 4.0% Sb and 114 gr/t Ag.
The 34 S of antimonite is +2.6 ‰ and of sphalerite +3.7‰ indi¬cating juvenile origin of sulphur, Fluid inclusion study of quartz iden-tified three types of fluids: Variscan NaCI-KCI-H2O type related to the Late Palaeozoic granite (rhyolite) megmatism, post-Variscan NaCl-CaCl2 + MgCl2)-H2O type formed by admixing of hot saline connate waters originated from the Late Permian evaporite complex and meta-morphogenic aqueous-curbonic fluids which overprinted ore deposit with CO2, CH4 and N2 components in Late Tertiary.
hrv
Sh-Zn-Hg-W kvarcne žice Čemernice nalaze se unutar donjopaleo-zojskih metasedimenata formiranih uz 3—5 kbr i 350 -450 °C probijeni gornjopaleozojskim riolitima. Datiranje K-Ar metodom indiciralo je tri faze metamorfizma. Prva faza. 343 Ma stara djelovala je na filite, druga 120-90 Ma stara metamorfozirala je riolite, a treća između 46 i 37 Ma uzrokovala je formiranje otrelitskih škriljaca. nosilaca ležišta. Rudna žica u Čemernici (NW—SE pružanja, i padom na NE) debela je prosječno 0.67 m, duga je 1.5 km i proteže se u dubinu preko 350 m. Rasjednuta je u četiri dijela: »Južna žica«, »Rudnički potok žica«, »Glavna žica« i »SZ-žica«. Struktura je masivna, trakasta, rijetko brečasta. Parageneza: kvarc I (50—95% rudne mase) je glavna jalovina, a antimonit I, II, sfalerit I, II i cinabarit su glavni rudni minerali. Podređeni su kalcedon, siderit, ferberit. demsonit. berlijerit, bulanžerit, plagionit, arsenopirit; oskudni su pirit I, II, markazit. pi-rotin, halkopirit I, II, tetraedrit i enargit dok su galenit, kvarc II, realgar, zlato i mineral »X« akcesorije.
Kemijske analize 177 rudnih uzoraka iz starih saskih i austrijskih radova dale su 4.33% Zn. 2.22% Sb i 137 gr/t Ag. Samo 15 uzoraka pokazalo je tragove do 0.1% Hg, a 8 uzoraka tragove do 0,1 gr/t Au. Netaknuti dijelovi »glavne žice« pokazali su 5.91% Zn, 8,93% Sb i 126 gr/t Ag. Preostale rude starih radova dale su 2.6—3.3% Zn, 0.69— 0.73% Sb i 161-190 gr/l Ag, Ukupne dokazane, vjerovatne i moguće rezerve rude (306.000 t) sadrže 5.9% Zn, 4.0% Sb i 114 gr/t Ag. 34 S antimonita je +2.6‰, a od sfalerita +3.7‰ ukazuje na juvenilno porijeklo sumpora. Studija fluidnih inkluzija u kvarcu identificirala je tri tipa fluida: variscijski NaCl-KCl-H2O tip genetski vezan za granit-ski (riolitski) magmatizam, postvariscijski NaCl-CaCl2 (±MgCl2) — H2O tip formiran miješanjem sa vrućim, slanim konatnim vodama koje vuku porijeklo iz gornjopermskog evaporitnog kompleksa te metamor-fogeni fluidi koji su u mlađem tercijaru donijeli CO2, CH4 i N2 komponente
Kemijske analize 177 rudnih uzoraka iz starih saskih i austrijskih radova dale su 4.33% Zn. 2.22% Sb i 137 gr/t Ag. Samo 15 uzoraka pokazalo je tragove do 0.1% Hg, a 8 uzoraka tragove do 0,1 gr/t Au. Netaknuti dijelovi »glavne žice« pokazali su 5.91% Zn, 8,93% Sb i 126 gr/t Ag. Preostale rude starih radova dale su 2.6—3.3% Zn, 0.69— 0.73% Sb i 161-190 gr/l Ag, Ukupne dokazane, vjerovatne i moguće rezerve rude (306.000 t) sadrže 5.9% Zn, 4.0% Sb i 114 gr/t Ag. 34 S antimonita je +2.6‰, a od sfalerita +3.7‰ ukazuje na juvenilno porijeklo sumpora. Studija fluidnih inkluzija u kvarcu identificirala je tri tipa fluida: variscijski NaCl-KCl-H2O tip genetski vezan za granit-ski (riolitski) magmatizam, postvariscijski NaCl-CaCl2 (±MgCl2) — H2O tip formiran miješanjem sa vrućim, slanim konatnim vodama koje vuku porijeklo iz gornjopermskog evaporitnog kompleksa te metamor-fogeni fluidi koji su u mlađem tercijaru donijeli CO2, CH4 i N2 komponente
Creator (Dublin Core)
Jurković, Ivan
Ramović, Mehmed
Zec, Franjo
Subject (Dublin Core)
eng
Bosnian Schist Mts;Čemernica;Sb-Zn-Hg-W quartz veins;tectonic setting;morphology;paragenesis;chemical and iso-topic compositions;fluid inclusion study;genesis
hrv
Bosansko škriljavo gorje;Čemernica;Sb-Zn-Hg-W kvarcne žice;tektonski sklop;morfologija;parageneza;kemijski i izotopski sastav;fluidne inkluzije;geneza
Publisher (Dublin Core)
Faculty of Mining, Geology and Petroleum Engineering University of Zagreb
Date (Dublin Core)
1999
Type (Dublin Core)
text
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://hrcak.srce.hr/13428
eng
https://hrcak.srce.hr/file/20593
Source (Dublin Core)
Rudarsko-geološko-naftni zbornik
ISSN 1849-0409 (Online)
Volume 11
Issue 1
Language (Dublin Core)
eng
Rights (Dublin Core)
info:eu-repo/semantics/openAccess
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Publisher copyright policies & self-archiving is also described at Sherpa organisation web (RoMEO service) based at the University of Nottingham (http://www.sherpa.ac.uk/romeo/pub/2374/).
All volumes of the Bulletin (from 1989) are available at Hrčak journal pages (http://hrcak.srce.hr/rgn-zbornik?lang=en).
The Bulletin is open access (OA, green model, CC-BY) journal what means that electronic versions of articles are accessible to readers, without any fees or registration.When use, please refer to Creative Commons license (BY type, http://creativecommons.org/licenses/by/4.0/ ).
Publisher copyright policies & self-archiving is also described at Sherpa organisation web (RoMEO service) based at the University of Nottingham (http://www.sherpa.ac.uk/romeo/pub/2374/).
All volumes of the Bulletin (from 1989) are available at Hrčak journal pages (http://hrcak.srce.hr/rgn-zbornik?lang=en).