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Textural setting of gold and its implications on mineral processing: preliminary results from three gold deposits in northern Sweden
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0001-9846-1793
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0003-4711-7671
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.ORCID-id: 0000-0002-8032-9388
2013 (engelsk)Inngår i: Mineral deposit research for a high-tech world: Proceedings of the 12th Biennial SGA Meeting, 12–15 August 2013, Uppsala, Sweden, Uppsala: Sveriges Geologiska Undersökning , 2013, s. 302-305Konferansepaper, Meeting abstract (Fagfellevurdert)
Abstract [en]

Within the European Union (EU27) the two most important gold producers are Finland and Sweden, covering more than two thirds of the European market. Due to the high gold prize mining companies are looking to extract more of the metal by improving recovery. We have done textural analysis on three gold-bearing deposits to better understand how the gold-textures seen in drill cores might affect the processing of different gold-ore types. In the Nautanen IOCG deposit, gold deportment is different whether gold is associated with pyrite or magnetite, and this must be considered when optimising the future mine and process planning. In the VMS-type Kristineberg deposit, the gold is associated with pyrite, sphalerite, and galena. Low gold recoveries from flotation could be explained by the occurrence of gold-inclusions in the pyrite. In the epigenetic Svartliden lode gold deposit, the gold is rather coarse-grained and associated with arsenopyrite-löllingite, and silicates. The relatively large grain size of gold can result in incomplete breakdown of the largest gold grains in the cyanide leaching process. To properly understand gold deportment in ores and to be able to improve mine planning and predict metal recoveries a comprehensive textural analysis of gold in drill core-samples is essential.

sted, utgiver, år, opplag, sider
Uppsala: Sveriges Geologiska Undersökning , 2013. s. 302-305
Emneord [en]
Earth sciences - Endogenous eartn sciences
Emneord [sv]
Gold, ore texture, northern Sweden, process mineralogy, in-situ analysis, Geovetenskap - Endogen geovetenskap
HSV kategori
Forskningsprogram
Malmgeologi; Mineralteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-29702Lokal ID: 34114906-4747-4988-859a-ec6c7a9b81ddISBN: 978-91-7403-207-9 (digital)OAI: oai:DiVA.org:ltu-29702DiVA, id: diva2:1002927
Konferanse
Biennial SGA Meeting : Mineral deposit research for a high-tech world 12/08/2013 - 15/08/2013
Merknad
Godkänd; 2013; 20130819 (bark)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-03-15bibliografisk kontrollert

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Bark, GlennWanhainen, ChristinaPålsson, Bertil

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Totalt: 508 treff
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