Analysis of Au-Ag Mineralization in the Caribou Base-Metal VMS Deposit, New Brunswick; Examination of Micro-Scale Inter- and Intra-Sulphide Distribution and Its Relation to Geometallurgy

The Caribou Zn-Pb-Cu-Ag volcanogenic massive sulphide deposit located in northeast New Brunswick represents a significant base-metal resource in the Bathurst Mining Camp. Zinc, Pb and Cu are the primary resources that are being extracted from this deposit; however, Au and Ag are important by-product...

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Bibliographic Details
Published in:Minerals (Basel) 2016-12, Vol.6 (4), p.113-113
Main Authors: Wright, Joshua, Lentz, David R, Rossiter, Steven, Garland, Phil
Format: Article
Language:English
Subjects:
Ablation
Bathurst Mining Camp
By products
Byproducts
Caribou mine
Caribous
Deposits
Galena
geometallurgy
Gold
Lead
Mass spectrometry
Metamorphism
Mine tailings
Mineral processing
Mineralization
Minerals
Mining
Pyrite
Scientific imaging
Silver
Silver mines
Sulfides
sulphides
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Summary:The Caribou Zn-Pb-Cu-Ag volcanogenic massive sulphide deposit located in northeast New Brunswick represents a significant base-metal resource in the Bathurst Mining Camp. Zinc, Pb and Cu are the primary resources that are being extracted from this deposit; however, Au and Ag are important by-products that could help offset costs. This study used mineral liberation analysis supported further by in situ laser ablation inductively-coupled plasma-mass spectrometry methods to document variations in Au and Ag distribution between and within sulphide minerals. The variations in Ag and Au distribution provide critical inputs to the optimization of mineral processing design. The greatest influence on Au recovery at Caribou is the proportion of Au hosted in arsenopyrite and pyrite; consequently, considerable Au will report to the tailings. Silver recovery at Caribou is highly affected by the proportion of Ag hosted in galena and tetrahedrite-tennantite. Proximal to the vent complex, Ag values are primarily hosted in galena, whereas further from the vent complex, Ag values are likely primarily hosted in tetrahedrite-tennantite. Galena Ag values will report mostly to the Pb concentrate, while tetrahedrite-tennantite Ag values will report to the Cu concentrate.
ISSN:2075-163X
2075-163X
DOI:10.3390/min6040113