Skip to main content
Conference Proceedings

Iron Ore 2019

Conference Proceedings

Iron Ore 2019

PDF Add to cart

Ore type characterisation of the Per Geijer iron ore deposits in Kiruna, Northern Sweden

Kiruna in Northern Sweden is famous for its economically important iron-oxide apatite (IOA) deposits, consistently mined by Luossavaara-Kiirunavaara AB (publ.), commonly known as LKAB, for over 100 years. The so called Per Geijer orebodies northeast of the Kiirunavaara mine constitute significant mineral resources in form of hematite-magnetite mineralisation. First identified in the late 1900s, the Per Geijer deposits were mined in four separate orebodies namely Nukutus, Henry, Rektorn and Haukivaara mainly during the 1960s, 70s and 80s. The fifth buried orebody Lappmalmen is only known from drilling and geophysics. The Per Geijer ore deposits show a large variation in texture, mineralogy and their relation to wall rocks. They reveal mostly high phosphorus grade and/or pure hematite ores, respectively. The highly elevated content of apatite as gangue mineral contributes to the high phosphorus grade of these ores, partly responsible for the final close-down of production in 1987. In last recent years, there has been new ideas to exploit these deposits in the future and to increase the mineral resources in the Kiruna area. The establishment of reliable, sufficient and detailed information about the mineralogy, texture of the ore and its modal mineral distribution, in context with the local geology is therefore key incitement for this project. This study has the focus on the characterisation of eleven ore types based on the magnetite/hematite ratio, silicate and apatite content. The modal mineral abundance and mineral associations vary between the ore types. Very fine-grained iron ores and the occurrence of sulfides, carbonates and barite may affect the beneficiation process. Furthermore, Ti-rich hematite can affect the chemistry of a potential hematite concentrate. The knowledge about the mineralogy of the in situ ore provides a better understanding of the future behaviour of each ore type during planned mineral processing tests. CITATION:Krolop, P, Niiranen, K, Gilbricht, S and Seifert, T, 2019. Ore type characterisation of the Per Geijer iron ore deposits in Kiruna, Northern Sweden, in Proceedings Iron Ore 2019, pp 349359 (The Australasian Institute of Mining and Metallurgy: Melbourne).
Return to parent product
  • Ore type characterisation of the Per Geijer iron ore deposits in Kiruna, Northern Sweden
    PDF
    This product is exclusive to Digital library subscription
  • Ore type characterisation of the Per Geijer iron ore deposits in Kiruna, Northern Sweden
    PDF
    Normal price $22.00
    Member price from $0.00
    Add to cart

    Fees above are GST inclusive

PD Hours
Approved activity
  • Published: 2018
  • PDF Size: 1.359 Mb.
  • Unique ID: p201903039

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.