scholarly journals GOLD-COPPER-SULPHIDE MINERALIZATION OF QUARTZ-CARBONATE VEINS IN GABBRO-DOLERITES FROM THE CHEVZHAVARA DEPOSIT, SOUTH KARELIA

2020 ◽  
pp. 16
Author(s):  
Людмила Владимировна Кулешевич ◽  
Олег Борисович Лавров ◽  
Lyudmila Kuleshevich ◽  
Oleg Lavrov
Keyword(s):  
Copper Sulphide ◽  
Sulphide Mineralization

MASSIVE COPPER SULPHIDE MINERALIZATION IN DOLOMITES FROM THE LUBIN MINE (FORE-SUDETIC MONOCLINE)

2017 ◽  
pp. 29-48 ◽  
Author(s):  
Piotr Król ◽  
Zbigniew Sawłowicz
Keyword(s):  
Cross Sections ◽  
Copper Sulphide ◽  
Copper Deposits ◽  
Sulphide Mineralization ◽  
Ore Mineralization ◽  
First Time ◽  
Mineralizing Fluids ◽  
Scanning Electron

Massive ore mineralization in dolomites is described for the first time from the Fore-Sudetic copper deposits. Three cross-sections from the Lubin Mine were studied using polarized optical (PLM) and scanning electron (SEM-EDS) microscopy, also cathodoluminescence (CL) and XRD. Massive mineralization, composed mainly of chalcocite with calcite admixture, occurs in dolomites as horizontal pseudovein, locally underlain by clay-carbonate breccia and shale. Underlying dolomites were partly calcitized (dedolomitized). Various calcite generations are characterized in detail. A model of the formation of massive mineralization is proposed. Mesotectonic intralayer movements caused the cracking of dolomite layers and the formation of breccia. Calcitization led to both dedolomitization and the partial infilling of cracks. Mineralizing fluids infilled the cracks completely, partly replacing calcite and adjacent rocks.

Geology and Copper Sulphide Mineralization of the Salmagorskii Ring Igneous Complex, Kola Peninsula, NW Russia

1998 ◽  
Vol 39 (11-12) ◽  
pp. 2033-2041 ◽  
Author(s):  
A. N. Korobeinikov ◽  
F. P. Mitrofanov ◽  
S. Gehor ◽  
K. Laajoki ◽  
V. P. Pavlov ◽  
...  
Keyword(s):  
Kola Peninsula ◽  
Copper Sulphide ◽  
Sulphide Mineralization ◽  
Igneous Complex

Introduction of selective copper sulphide leaching from gold concentrate

2018 ◽  
Vol 7 ◽  
pp. 139-145
Author(s):  
Wen Yafeng ◽  
◽  
U.D. Izabaev ◽  
A.K. Ukubaev ◽  
E.A. Zavarukhina ◽  
...  
Keyword(s):  
Copper Sulphide

PCB Related Field Failures with ImAg Surface Finishes

2007 ◽  
Author(s):  
Anil Kurella ◽  
Aravind Munukutla ◽  
J.S. Lewis
Keyword(s):  
Emerging Markets ◽  
Galvanic Corrosion ◽  
Electrochemical Migration ◽  
Copper Sulphide ◽  
Electronic Components ◽  
Related Field ◽  
Surface Finishes ◽  
Immersion Silver ◽  
Manufacturing Environments

Abstract PCB surface finishes like Immersion silver (ImAg) are commonly used in Pb-free manufacturing environments following RoHS legislation. With this transition, however the numbers of field failures associated with electrochemical migration, copper sulphide corrosion, via barrel galvanic corrosion are on a steady rise. More often than not ImAg surfaces seem to assist these failing signatures. As computers penetrate into emerging markets with humid and industrialized environments there is a greater concern on the reliability and functionality of these electronic components.

scholarly journals The conductivity of chalcocite, the richest copper sulphide

Preview ◽  
2021 ◽  
Vol 2021 (212) ◽  
pp. 48-51
Author(s):  
Don Emerson
Keyword(s):  
Copper Sulphide

scholarly journals Properties of interfaces between copper and copper sulphide/oxide films

2021 ◽  
Vol 183 ◽  
pp. 109313
Author(s):  
Joakim Halldin Stenlid ◽  
Egon Campos dos Santos ◽  
Adam Johannes Johansson ◽  
Lars G.M. Pettersson
Keyword(s):  
Oxide Films ◽  
Copper Sulphide
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