Malmberget

Mindat.org

Gällivare, Norrbotten County, Sweden

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Key Information

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  • Malmberget is located in Gällivare Municipality, Norrbotten County, Sweden, about 5 km north of Gällivare, north of the Arctic Circle.

  • It is famous for iron ore (magnetite and hematite) and also hosts minerals like calcite, apatite, and copper minerals such as azurite and bornite, with golden calcite being particularly notable.

  • The geological structure involves igneous rocks (Kiruna Porphyry) from the Baltic Shield, formed in a volcanic environment during the Proterozoic era.

  • Mining began in 1741, expanded significantly in 1888 with rail transport, and is currently operated by LKAB, with the town being relocated due to mining activities.

  • The area has a strong mining culture, highlighted by the LKAB Gruvmuseum and Kåkstan museum, and is in a subarctic climate with cold winters and brief summers, impacting the local ecology with mining altering the landscape.

Geographic Location

Malmberget sits in the Arctic region of Sweden, about 5 km north of Gällivare in Norrbotten County, north of the Arctic Circle. This location means it experiences a subarctic climate with long, cold winters and short, cool summers, making it a unique setting for mineral exploration.

Minerals Produced

While iron ore, specifically magnetite and hematite, is the main draw, Malmberget also features a variety of other minerals. Calcite, apatite, chalcopyrite, pyrite, and copper minerals like azurite and bornite are found here. The golden calcite is especially famous among collectors for its striking appearance and rarity.

Geological Structure

The iron ore deposits are hosted in igneous rocks known as the Kiruna Porphyry, part of the Baltic Shield. These deposits, of the iron-oxide apatite type, formed in a volcanic or subvolcanic environment during the Proterozoic era, with the ore bodies appearing as large, eastward-inclined sheets, primarily gneissic due to metamorphism.

Mining History

Mining started in 1741 at Illuvaara mountain, with significant growth in 1888 when rail transport began. Owned by Luossavaara-Kiirunavaara AB (LKAB), one of Europe's largest mining companies, the mine remains active, producing substantial iron ore. The ongoing relocation of Malmberget town due to mining activities underscores its operational scale and impact.

Local Culture and Characteristics

Malmberget's culture is deeply rooted in mining, with the LKAB Gruvmuseum and Kåkstan, a historical shantytown museum, offering insights into the region's industrial past and miners' lives. The town's current relocation to accommodate the expanding mine adds a unique cultural narrative, reflecting adaptation to industrial needs.

Climate and Ecology

The subarctic climate features temperatures dropping well below freezing in winter and brief, mild summers. The ecology includes flora and fauna adapted to cold conditions, but mining activities have significantly altered the landscape, creating large open pits that affect the natural environment.