ABSTRACT
Numerous occurrences and deposits of Sb-Au mineralization containing gold-bearing sulphides are described from 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 into its crystal structure. Concentrations of invisible gold in pyrite are not as large as in arsenopyrite.
This work has demonstrated that gold is incorporated within sulphide crystals both as native gold and chemically bound gold. Although arsenic and gold contents of arsenian pyrites and arsenopyrites vary from sample to sample, there is a positive correlation between Au and As contents in the samples that were analysed.
