Fluid inclusion study of quartz veins from the orogenic Klecza gold deposit in the Kaczawa Mountains (SW Poland)

被引：1

作者：

Mikulski, S. Z. ^{[1
]}

Speczik, S. ^{[1
]}

Kozlowski, A. ^{[1
]}

机构：

[1] Polish Geol Inst, PL-00975 Warsaw, Poland

来源：

Mineral Deposit Research: Meeting the Global Challenge, Vols 1 and 2 | 2005年

关键词：

orogenic gold; fluid inclusion; Klecza; Kaczawa mountains; Western Sudetes; SW Poland; Bohemian Massif; European Variscides;

D O I：

10.1007/3-540-27946-6_142

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Primary fluid inclusions in different generations of auriferous quartz from the Klecza orogenic gold deposit crystallized from 340 to 244 degrees C with decreasing salinity of fluids of 12.3 to 6.4 wt % NaCl equivalent and at pressure drop of 0.9 to 0.7 kb. Fluids revealed the presence of moderate to low saline two-phase aqueous fluids with CO2, N-2 and CH4. In ore fluids beside sodium cations there occurred especially high concentration of K and low to moderate contents of Al and Fe cations that caused Au precipitation. Post-ore fluids are characterized by domination of Na. The correlation between gold and sulphur as well as common occurrence of gold inclusions in pyrite and arsenopyrite of the first ore stage mineralization suggest that gold was transported as reduced bisulphicle complexes. The values of the sulphur isotope compositions of the considered above sulphides reflect a strong sulphur contribution from the graphitic schists beside the magmatic source of sulphur.

引用

页码：553 / 556

页数：4