Košík

  Odznačiť vybrané:   0

  1.  

    SYS0229868
    LBL
    		02400^^^^^2200205^^^450
    005
    		20240411100457.9
    100
    		$a 20160603d2015 m y slo 03 ba
    101
    0-
    		$a eng
    102
    		$a SK
    200
    1-
    		$a Au incorporation in gold-bearing sulphides $e (Western Carpathians) $f Peter Andráš, Martin Chovan
    330
    0-
    		$a 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
    463
    -1
    		$1 001 umb_un_cat*0234814 $1 010 $a 978-80-553-2257-5 $1 200 1 $a Selected Sb-Au, Cu-Ag and Hg ore deposits - origin, mineralogy, environmental problems $g rec. Vítězslav Zamarský, Nadežda Števulová ... [et al.] $v S. 61-83 $1 205 $a 1. vyd. $1 210 $a Košice $c Technická univerzita $d 2015 $1 215 $a 231 s. $1 702 1 $3 umb_un_auth*0237130 $a Zamarský $b Vítězslav $4 675 $1 702 1 $3 umb_un_auth*0236818 $a Števulová $b Naděžda $4 675 $1 702 1 $3 umb_un_auth*0235477 $a Marschalko $b Marian $4 675 $1 702 1 $3 umb_un_auth*0207707 $a Buccheri $b Giuseppe $f 1973- $4 675
    606
    0-
    		$3 umb_un_auth*0122107 $a arsenopyrite
    606
    0-
    		$3 umb_un_auth*0254868 $a pyrite
    606
    0-
    		$3 umb_un_auth*0161393 $a invisible gold
    606
    0-
    		$3 umb_un_auth*0254869 $a gold-antimony deposits
    606
    0-
    		$3 umb_un_auth*0254870 $a Mossbauer spectroscopy
    607
    -1
    		$3 umb_un_auth*0098733 $a Západné Karpaty (pohorie) $X Western Carpathians Mountains
    615
    		$n 55 $a Vedy o Zemi. Geologické vedy
    675
    		$a 55
    700
    -1
    		$3 umb_un_auth*0120546 $a Andráš $b Peter $p UMBFP04 $4 070 $9 70 $f 1953- $T Katedra životného prostredia
    701
    -1
    		$3 umb_un_auth*0108759 $a Chovan $b Martin $4 070 $9 30
    801
    		$a SK $b BB301 $g AACR2 $9 unimarc sk
    T85
    		$x existuji fulltexy

  2.  

    SYS0218439
    LBL
    		00542nx^^^22001813^^45
    005
    		20130624100557.3
    100
    		$a 20130624asloy0103 ba
    152
    		$a AACR2
    200
    -1
    		$a Fila $b Rudolf $c slov. maliar $f 1932-
    801
    -0
    		$a SK $b BB301

  3.  

    SYS0084134
    LBL
    		$$$$$naa$$22$$$$$$$$450$
    005
    		20220617133405.8
    100
    		$a 20091104d2009łłłłm y$slo$03 $$$$ba
    101
    0-
    		$a eng
    102
    		$a DE
    200
    1-
    		$a The invisible gold in arsenopyrite from the Sb-Au deposit Pezinok (Slovakia) $d Neviditeľné zlato v arzenopyrite z Sb-Au ložiska Pezinok (Slovensko) $f Juraj Majzlan...[et al.] $z slo
    463
    -1
    		$1 011 $a 1432-3702 $1 200 1 $a Hallesches Jahrbuch für Geowissenschaften $e Band 31 $e 87. Tagung der Deutschen Mineralogischen Gesellschaft vom 13. - 16. September 2009 an der Martin-Luther-Universität Halle-Wittenberg $e Programm, Kurzfassungen, Exkursionen $f ed. N. Hauschke $v S. 151 $1 210 1 $a Halle $c Martin-Luther-Universität Halle-Wittenberg, Institut für Geowissenschaften $d 2009
    606
    0-
    		$3 umb_un_auth*0161390 $a arzenopyrit
    606
    0-
    		$3 umb_un_auth*0161391 $a neviditeľné zlato
    606
    0-
    		$3 umb_un_auth*0122107 $a arsenopyrite
    606
    0-
    		$3 umb_un_auth*0161393 $a invisible gold
    607
    -1
    		$3 umb_un_auth*0037379 $a Pezinok (Slovensko) $X Pezinok (Slovakia)
    615
    		$n 546 $a Anorganická chémia $2 konspekt
    675
    		$a 546
    675
    		$a 549.324.62
    700
    -1
    		$3 umb_un_auth*0161394 $a Majzlan $b Juraj $4 070 $9 30
    701
    -1
    		$3 umb_un_auth*0108759 $a Chovan $b Martin $4 070 $9 25
    701
    -1
    		$3 umb_un_auth*0120546 $a Andráš $b Peter $f 1953- $p UMBFP04 $9 25 $4 070 $T Katedra životného prostredia
    701
    -1
    		$3 umb_un_auth*0161395 $a Wiedenbeck $b Michael $4 070 $9 10
    701
    -1
    		$3 umb_un_auth*0161396 $a Newville $b Matthew $4 070 $9 10
    801
    -0
    		$a SK $b BB301 $g AACR2 $9 unimarc sk
    T85
    		$x existuji fulltexy

  Tieto stránky využívajú súbory cookies, ktoré uľahčujú ich prezeranie. Ďalšie informácie o tom ako používame cookies.

Prijať všetkoNastavenieOdmietnuť všetko