Výsledky vyhľadávania
Názov Determination of Pb isotope ratios in Sb-mineralization from Western Carpathians Aut.údaje Peter Andráš ... [et al.] Autor Andráš Peter 1953- (40%) UMBFP04 - Katedra životného prostredia
Spoluautori Chovan Martin (30%)
Dirner Vojtech 1953- (15%)
Kráľ Ján (15%)
Zdroj.dok. Selected Sb-Au, Cu-Ag and Hg ore deposits - origin, mineralogy, environmental problems. S. 49-60. - Košice : Technická univerzita, 2015 / Zamarský Vítězslav ; Števulová Naděžda ; Marschalko Marian ; Buccheri Giuseppe 1973- Kľúč.slová Pb-izotopy mineralizácia - mineralization Pb-isotopes mineralization Heslá geogr. Západné Karpaty (pohorie) Jazyk dok. angličtina Krajina Slovenská republika Systematika 55 Anotácia The article present the comparison of the Pb-isotope study of antimony-ores from important Sb-mineralization of Western Carpathian: from Tatric unit (Pezinok, Kuchyňa, Pernek, Dúbrava, Magurka, Lom, Trangoška, Jasenie, Kriváň deposits and occurrences), Gemeric unit (Helcmanovce, Grexa and Poproč deposits) and from Eastern Slovakian neovolcanites (Zlatá Baňa). The study is compared with results of previous investigations of affiliated galena mineralization. The lead is of a crustal origine. The lead from Taric and that from Gemeric unit (and Eastern Slovakian Neovolcanites) seems to be derived from different reservoirs Kategória publikačnej činnosti AED Číslo archívnej kópie 36971 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ 
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Názov Au incorporation in gold-bearing sulphides Podnázov (Western Carpathians) Aut.údaje Peter Andráš, Martin Chovan Autor Andráš Peter 1953- (70%) UMBFP04 - Katedra životného prostredia
Spoluautori Chovan Martin (30%)
Zdroj.dok. Selected Sb-Au, Cu-Ag and Hg ore deposits - origin, mineralogy, environmental problems. S. 61-83. - Košice : Technická univerzita, 2015 / Zamarský Vítězslav ; Števulová Naděžda ; Marschalko Marian ; Buccheri Giuseppe 1973- Kľúč.slová arsenopyrite pyrite invisible gold gold-antimony deposits Mossbauer spectroscopy Heslá geogr. Západné Karpaty (pohorie) Jazyk dok. angličtina Krajina Slovenská republika Systematika 55 Anotácia Numerous occurrences and deposits of Sb-Au mineralization containing gold-bearing sulphides are described from an area of the Tatric Unit in Western Carpathians e.g.: Pezinok, Dúbrava, Jasenie, Nižná Boca, Vyšná Boca etc. It was shown, that arsenopyrite is the main sulphide mineral incorporating invisible gold in its crystal structure. Concentrations of invisible gold in pyrite are not as high as in arsenopyrite. Only if arsenic is present in the pyrite in amounts greater than 0.2 wt %, there is significant incorporation of Au in its crystal structure. Gold content in these sulphides ranges from zero up to n.100 ppm. The fine-grained types contain higher Au concentrations, by as much as an order of magnitude. This work has demonstrated that Au coprecipitated together with Fe, As and S during the arsenopyrite and pyrite crystallization and was incorporated in sulphide mineral crystals both as native gold and chemically bound gold. Although As and Au contents in arsenian pyrites and arsenopyrites vary from sample to sample, there is a positive correlation between Au and As. The covariance in As and Au indicate that they were transported by the same solution and that the same geochemical processes led to their removal from solution. Au is predominantly concentrated within As-rich zones of gold-bearing sulphides. Gold-bearing arsenopyrite and pyrite precipitated at the onset of the paragenetic sequence. They crystallized within a broad temperature range: 319 to 450 °C Kategória publikačnej činnosti AED Číslo archívnej kópie 36952 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ nerozpoznaný
Názov Geochemometrical comparison of Western Carpathian and Eastern Alpine deposits Aut.údaje Erich Schroll, Peter Andráš, Martin Chovan Autor Schroll Erich (40%)
Spoluautori Andráš Peter 1953- (40%) UMBFP04 - Katedra životného prostredia
Chovan Martin (20%)
Zdroj.dok. Selected Sb-Au, Cu-Ag and Hg ore deposits - origin, mineralogy, environmental problems. S. 5-9. - Košice : Technická univerzita, 2015 / Zamarský Vítězslav ; Števulová Naděžda ; Marschalko Marian ; Buccheri Giuseppe 1973- Kľúč.slová magnezitové ložiská magnezitové ložiská - magnesite deposits geológia - geology Heslá geogr. Západné Karpaty (pohorie) Východné Alpy Jazyk dok. angličtina Krajina Slovenská republika Systematika 55 Anotácia Carpathian and Alpine ore and non-ore mineralization. The massive sulphide, stibnite and other siderite as well as magnesite deposits. The age of these mineralization vary from the oldest massive sulfides (about 600 Ma) to youngest gold-silver-polymetallic mineralization of Central Slovakian Neovolcanites. The article discuss also the variable Pb, S, C and O isotope distribution of the mentioned different types of mineralization Kategória publikačnej činnosti AED Číslo archívnej kópie 36935 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ nerozpoznaný