Change search
ReferencesLink to record
Permanent link

Direct link
Mineral Chemistry of Gangue Minerals in the Kiirunavaara Iron Ore
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The iron-ore of Kiirunavaara is one of the largest magnetite-apatite mineralisation in the world. It is well known for its purity and size and its origin has been the subject of an intense debate for over a century. The composition of the most important minerals from an economic point of view, magnetite and apatite, has been well studied but little is known about the composition and role of the silicate minerals. Nowadays, even the silicates have been targeted for investigations, both in Kiirunavaara and in similar deposits elsewhere, e.g., Sierra la Banderra, Chile. The growing interest derives mainly from the importance of the gangue minerals in ore processing but also because they might hold the key to the origin of the ores.In this study, a large scale microprobe investigation of over 250 analyses has been carried out mainly focussing on silicates within the ore body but also to some extent on sulphates, phosphates and carbonates. Most of the analysed grains belonged to either the amphibole group or the mica group. Amphiboles and micas are by far the most abundant silicates within the ore body.Through (EMPA) analysis of 198 separate mineral grains, this investigation led to the broadest and most updated characterisation of silicates within the Kiirunavaara ore body. It also briefly looks at setting and chemistry of sulphates, phosphates, and carbonates.This study indicates that silicates may have been formed during shifting periods of crystallization and chemical environments, and that the mineral assemblage and composition do not oppose a magmatic origin.

Place, publisher, year, edition, pages
2012. , 47 p.
Keyword [en]
Life Earth Science
Keyword [sv]
Bio- och geovetenskaper, malmgeologi, mineralkemi, kiruna-typ malm, silikater
URN: urn:nbn:se:ltu:diva-43100Local ID: 10270414-e447-40d9-a482-f2a702c78d5cOAI: diva2:1016328
Subject / course
Student thesis, at least 30 credits
Educational program
Geosciences, master's level
Validerat; 20121223 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

Open Access in DiVA

fulltext(3644 kB)1 downloads
File information
File name FULLTEXT02.pdfFile size 3644 kBChecksum SHA-512
Type fulltextMimetype application/pdf
fulltext(297 kB)0 downloads
File information
File name FULLTEXT03.xlsxFile size 297 kBChecksum SHA-512
Type fulltextMimetype application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Search in DiVA

By author/editor
Nordstrand, Joakim

Search outside of DiVA

GoogleGoogle Scholar
Total: 1 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

ReferencesLink to record
Permanent link

Direct link