TY - JOUR

T1 - Unique association of sulphosalts from the kl’ačianka occurrence, Nízke Tatry Mts., Slovak Republic

AU - Sejkora, Jiří

AU - Števko, Martin

AU - Pršek, Jaroslav

AU - Hovorič, Róbert

AU - Makovicky, Emil

AU - Chovan, Martin

N1 - Funding Information: Funding: The research was financially supported by the Ministry of Culture of the Czech Republic (long-term project DKRVO 2019-2023/1.II.c; National Museum, 00023272). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021

Y1 - 2021

N2 - Unique association of sulphosalts was discovered at the Kl’ačianka occurrence, Nízke Tatry Mts., Slovak Republic. It is bound to thin hydrothermal veins with Sb mineralization hosted by the Variscan muscovite-biotite granodiorite and granite of Prašivá type. Ore mineralogy and crystal chemistry of ore minerals are studied here by ore microscopy, X-ray powder diffraction, electron microprobe analyses, and Raman spectroscopy. The early ore mineralization composed of pyrite and arsenopyrite is hosted in quartz gangue and is followed by abundant association of sulfos-alts. Stibnite, zinkenite, robinsonite (including Cu-bearing variety), jamesonite, scainiite, dadsonite, disulfodadsonite, rouxelite, chovanite, semseyite, boulangerite, geocronite, tintinaite (with low Bi contents), tetrahedrite-(Fe), tetrahedrite-(Zn), bournonite, chalcostibite, bismuthinite, and gladite in association with sphalerite and rare galena and gold are identified here. The chlorine-rich character of the described sulphosalt association is its characteristic phenomenon. It is represented not only by the occurrence of Cl-sulphosalt and dadsonite, but increased Cl contents were detected in boulan-gerite, chovanite, disulfodadsonite, robinsonite, rouxelite, scainiite, or tintinaite. The presence of oxygen-containing sulphosalts, such as rouxelite, scainiite and chovanite, is also interesting. The crys-tallization of these rare chloro-, oxy-and oxy-chloro-sulphosalts at the Kl’ačianka occurrence required very specific conditions (elevated O2 /S2 fugacity) and high chlorine activity in ore-forming fluids.

AB - Unique association of sulphosalts was discovered at the Kl’ačianka occurrence, Nízke Tatry Mts., Slovak Republic. It is bound to thin hydrothermal veins with Sb mineralization hosted by the Variscan muscovite-biotite granodiorite and granite of Prašivá type. Ore mineralogy and crystal chemistry of ore minerals are studied here by ore microscopy, X-ray powder diffraction, electron microprobe analyses, and Raman spectroscopy. The early ore mineralization composed of pyrite and arsenopyrite is hosted in quartz gangue and is followed by abundant association of sulfos-alts. Stibnite, zinkenite, robinsonite (including Cu-bearing variety), jamesonite, scainiite, dadsonite, disulfodadsonite, rouxelite, chovanite, semseyite, boulangerite, geocronite, tintinaite (with low Bi contents), tetrahedrite-(Fe), tetrahedrite-(Zn), bournonite, chalcostibite, bismuthinite, and gladite in association with sphalerite and rare galena and gold are identified here. The chlorine-rich character of the described sulphosalt association is its characteristic phenomenon. It is represented not only by the occurrence of Cl-sulphosalt and dadsonite, but increased Cl contents were detected in boulan-gerite, chovanite, disulfodadsonite, robinsonite, rouxelite, scainiite, or tintinaite. The presence of oxygen-containing sulphosalts, such as rouxelite, scainiite and chovanite, is also interesting. The crys-tallization of these rare chloro-, oxy-and oxy-chloro-sulphosalts at the Kl’ačianka occurrence required very specific conditions (elevated O2 /S2 fugacity) and high chlorine activity in ore-forming fluids.

KW - Cl-rich sulphosalts

KW - Kl’ačianka

KW - Nízke Tatry Mts

KW - O-rich sulphosalts

KW - Sb hydrothermal mineralization

U2 - 10.3390/min11091002

DO - 10.3390/min11091002

M3 - Journal article

AN - SCOPUS:85114782210

VL - 11

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 9

M1 - 1002

ER -