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Långhalsen meteorite, Vrena, Nyköping, Södermanland, Sweden

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Latitude & Longitude (WGS84): 58° 51' 0'' North , 16° 43' 59'' East
Latitude & Longitude (decimal): 58.85000,16.73333
Other regions containing this locality:Scandinavia
Non-native locality type:Meteorite
Köppen climate type:Dfb : Warm-summer humid continental climate
Name(s) in local language(s):, Södermanland, Sverige

Ordinary Chondrite (L4)
Fell, 6 February 1947; 2.3 kg

With an accompanying whistling sound a meteoritic stone fell during the afternoon onto the Lake Långhalsen ice and broke into 4 fragments. Mineralogy [prominent olivine (Fa24) and pyroxene (Fs20)], textures [chondrules, grains, and matrix], and chemistry [bulk iron (~22 wt%)] indicated an 'Olivine-bronzite chondrite' — today's L chondrite chemical group.

Långhalsen is one of 9 confirmed meteorite Swedish falls listed at the Meteoritical Bulletin Database as of late 2015. Of these, only Långhalsen and Lundsgård are listed as exactly 'L6' chondrites (Low bulk iron, largely equilibrated silicates and metal). The main mass is at Stock­holm's Naturhistoriska riksmuseet.

Mineral List

1 valid mineral.

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Krinov, E.L. (1961) Meteoritical Bulletin, no.20. Moscow.

Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27: 1011-1023.

van Schmus, W.R. & Koffman, D.M. (1967) Equilibration Temperatures of Iron and Magnesium in Chondritic Meteorites: Science, New Series 155 (3765): 1009-1011. (Feb 1967).

Van Schmus, W.R. & Ribbe, P.H. (1968) The composition and structural state of feldspar from chondritic meteorites: Geochimica et Cosmochimica Acta 32(12): 1327-1342. (Dec. 1968).

Fredriksson, K.. Nelsen, J. & Fredriksson, B.J. (1968) The LL-Group Chondrites. In: Ahrens, L.H., Editor: Origin and Distribution of the Elements, pages 457-466.

Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.

Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.

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