scholarly journals The gold and base metal potential of the Lower Proterozoic Karrat Group, West Greenland

1992 ◽  
Vol 155 ◽  
pp. 57-66
Author(s):  
B Thomassen
Keyword(s):  
Base Metal ◽  
Precious Metals ◽  
Shear Zones ◽  
Base Metals ◽  
West Greenland ◽  
Mineral Potential ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Iron Formations ◽  
Gold Bearing

The mineral potential of the Karrat Group in West Greenland became important after exhaustion in 1990 of the Black Angel lead-zinc mine situated within this supracrustal unit. It consists of shelf and turbidite type metasediments and subordinate metavolcanics deposited in an epicontinental marginal basin. Known mineralization comprises the Black Angel deposit and a number of other marble-hosted lead-zinc occurrences, as well as extensive sulphide facies iron formations and vein type base and precious metals mineralisation in quartzites and metagreywackes. Further areas with anomalously high contents of both base metals and gold-arsenic-tungsten are indicated by drainage geochemistry. The mineral potential of the Karrat Group is for massive base metal sulphide deposits hosted in marbles or clastic metasediments, and turbidite hosted gold-bearing veins and shear zones.

The Lichen Flora Near a Lead-Zinc Mine at Maarmorilik in West Greenland

1991 ◽  
Vol 23 (4) ◽  
pp. 381-391 ◽  
Author(s):  
E. S. Hansen
Keyword(s):  
Heavy Metals ◽  
Alkaline Soil ◽  
West Greenland ◽  
Mining Town ◽  
Ecological Preferences ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Airborne Lead ◽  
Lichen Flora

AbstractEighty-seven lichen taxa were collected at four localities near the leadzinc mine at Maarmorilik. These are listed alphabetically and grouped according to their ecological preferences. Lichens, which in Greenland are restricted to calcareous rocks and alkaline soil substrata, are well represented in the Maarmorilik area. In contrast, ferrugineous lichens appear to be comparatively rare. The lichens around the mining town are assumed to have accumulated significant concentrations of airborne lead and zinc. However, no damage to the lichens caused by heavy metals was observed.

Geochemical trends in metal-contaminated fiord sediments near a former lead–zinc mine in West Greenland

2002 ◽  
Vol 17 (4) ◽  
pp. 493-502 ◽  
Author(s):  
Bo Elberling ◽  
Gert Asmund ◽  
Helmar Kunzendorf ◽  
Eirik J Krogstad
Keyword(s):  
West Greenland ◽  
Lead Zinc ◽  
Zinc Mine

Otolith Chemistry of Common Sculpins (Myoxocephalus scorpius) in a Mining Polluted Greenlandic Fiord (Black Angel Lead-Zinc Mine, West Greenland)

2015 ◽  
Vol 226 (10) ◽  
Author(s):  
Jens Søndergaard ◽  
Norman Halden ◽  
Lis Bach ◽  
Kim Gustavson ◽  
Christian Sonne ◽  
...  
Keyword(s):  
Otolith Chemistry ◽  
West Greenland ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Myoxocephalus Scorpius

scholarly journals Project SUPRASYD 1994 - Ketilidian supracrustal rocks in South-East Greenland and gold- bearing shear zones in the Julianehåb batholith

1995 ◽  
Vol 165 ◽  
pp. 59-63
Author(s):  
A.A Garde ◽  
H.K Schønwandt
Keyword(s):  
West Coast ◽  
Shear Zones ◽  
Field Work ◽  
Orogenic Belt ◽  
The West ◽  
East Greenland ◽  
Mineral Potential ◽  
Lower Proterozoic ◽  
Field Season ◽  
Gold Bearing

The SUPRASYD project is a reassessment of the geo­tectonic setting and mineral potential of the Lower Proterozoic Ketilidian orogenic belt in southern Greenland (previously described by Allaart, 1976 and Kalsbeek et al., 1990), and in particular its supracrustal rocks. During the first field season in 1992 a geological and geochemical reconnaissance programme was carried out in South-East Greenland between approximately latitudes 60° to 62° N, mainly in areas with supracrustal rocks (Steenfelt et al., 1992; Nielsen et al., 1993; Chadwick et al., 1994a). The second season in 1993 focused on the southern part of the Julianehab batholith on the west coast of South Greenland, as well as on shear zones with spatially associated gold mineralisation (Garde & Schonwandt, 1994; Chadwick et al., 1994b; Stendal et al., in press). Field work from the early 1960s was re-evaluated and supplemented with new mapping with the aim of compilation of the 1: 100 000 scale map sheet 60 V.3, Sondre Sermilik.

Heap Biooxidation of Gold-Sulphide and Polymetallic Ores and Tailings

2017 ◽  
Vol 262 ◽  
pp. 122-125
Author(s):  
Alexander V. Epiforov ◽  
Aleksey N. Seleznev ◽  
Yuriy Ye. Emelyanov ◽  
Stanislav V. Balikov ◽  
Lyudmila Ye. Shketova ◽  
...  
Keyword(s):  
Precious Metals ◽  
Base Metals ◽  
Copper Ore ◽  
Zinc Recovery ◽  
Nickel Recovery ◽  
Ore Processing ◽  
Refractory Gold ◽  
Processing Plants ◽  
Refractory Ores ◽  
Gold Bearing

Heap biooxidation is the most economic option of treating processing plants tailings and refractory ores containing non-ferrous and precious metals and sulphides.Pyrite tailings of copper ore processing (Sample 1), tailings of sulphide copper-nickel ore processing (Sample 2) and double refractory gold-bearing ore (Sample 3) were studied.Autotrophic microorganisms Acidithiobacillusthiooxidans and Acidithiobacillusferrooxidans were used for the tests. The duration of heap biooxidation tests for Samples 1, 2 and 3 was 6, 10 and 16 months, respectively. The rates of copper and zinc recovery into solution during heap biooxidation of Sample 1 were 68% and 71%, respectively; the rates of copper and nickel recovery from Sample 2 were 50% and 75%, respectively. Base metals were extracted from solution to selective high-grade concentrates after biooxidation.Biooxidation tailings of Samples 1 and 3 were leached using an alkaline sodium cyanide solution. The recovery of gold from Sample 1 and Sample 2 was 65% and 85%, respectively.

scholarly journals Limnological Characteristics Reveal Metal Pollution Legacy in Lakes near Canada’s Northernmost Mine, Little Cornwallis Island, Nunavut

ARCTIC ◽  
2021 ◽  
Vol 74 (2) ◽  
pp. 167-174
Author(s):  
Branaavan Sivarajah ◽  
Neal Michelutti ◽  
Xiaowa Wang ◽  
Christopher Grooms ◽  
John P. Smol
Keyword(s):  
Heavy Metals ◽  
Water Chemistry ◽  
Base Metal ◽  
Metal Pollution ◽  
Climatic Conditions ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Resolute Bay ◽  
Cornwallis Island

We compared modern limnological characteristics of three lakes near the world’s northernmost base metal (lead-zinc) mine, Polaris Mine, which operated from 1981 to 2002 on Little Cornwallis Island (Nunavut, Canada), to a suite of sites from Resolute Bay (Qausuittuq), Cornwallis Island. Although both study regions are underlain by broadly similar geology and experience nearly identical climatic conditions, present-day water chemistry variables differed markedly between sites on the two islands. Specifically, the lakes near the Polaris Mine recorded substantially higher concentrations of zinc and lead, as well as several other heavy metals (cadmium, molybdenum, nickel, uranium, vanadium), relative to the sites on Cornwallis Island. Although the Polaris Mine closed in 2002, elevated levels of heavy metals in our 2017 survey are likely a legacy of contamination from prior operations. 

scholarly journals Emergence and Applications of Base Metals (Fe, Co, and Ni) in Hydroboration and Hydrosilylation

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3194 ◽  
Author(s):  
Sem Raj Tamang ◽  
Michael Findlater
Keyword(s):  
Metal Complexes ◽  
Base Metal ◽  
Precious Metals ◽  
Review Article ◽  
Metal Salts ◽  
Base Metals ◽  
Metal Catalysis ◽  
Recent Advances

Base metal catalysis offers an alternative to reactions, which were once dominated by precious metals in hydrofunctionalization reactions. This review article details the development of some base metals (Fe, Co, and Ni) in the hydroboration and hydrosilylation reactions concomitant with a brief overview of recent advances in the field. Applications of both commercially available metal salts and well-defined metal complexes in catalysis and opportunities to further advance the field is discussed as well.

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