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Österplana 065
Basic information Name: Österplana 065
     This is an official name for a relict meteorite. Relict meteorites are composed mostly of terrestrial minerals, but are thought to have once been meteorites. Note: evidence that this was once a meteorite may not have been critically evaluated.
Abbreviation: Öst 065
Observed fall: No
Year found: 2011
Country: Sweden
Recommended:  Relict meteorite    [explanation]

Comments: Entered 14 Mar 2016
Writeup from MB 105:

Österplana 065 (Öst 065)        58°35’N, 13°26’E

Skaraborgs, Sweden

Find: 2011 June 26

Classification: Relict meteorite

History: On June 26, 2011, the quarry workers in the Thorsberg Quarry at Kinnekulle, southern Sweden, were removing limestone beds of low industrial quality from the upper part of the quarry. In the uppermost quarried bed, Glaskarten 3, the workers identified an 8 × 6.5 × 2 cm prominent gray clay inclusion as a relict meteorite. All the ca. 100 relict meteorites found so far in the quarry are almost completely replaced mainly by calcite and clay minerals, and spinel minerals are the only common relict components. Based on the chemistry of the spinels in the new meteorite it was soon obvious that it was of another kind than all the other recovered relict meteorites. In order to confirm that it indeed was a relict meteorite and not, e.g., an altered volcanic bomb, 187Os/188Os and Os analyses were performed on bulk material. The meteorite is as high in Os as recent chondrites, and has the same Os isotopic composition, clearly establishing that this is an extraterrestrial object. Chromium and oxygen-three isotopic analyses have shown that the meteorite is of a kind not represented in our collection of recent meteorites. For further details, see Schmitz et al. (2014) Earth and Planetary Science Letters 400: 145-152

Classification: Chromium and oxygen-three isotopic studies by Qing-zhu Yin and Matt Sanborn, UCD, and Gary Huss and Caroline Caplan, UHaw, show that this relict meteorite is the remains of a type of meteorite that has no equivalent among the meteorites falling on Earth today. The oxygen isotopes indicate affinity with primitive achondrites, whereas the chromium isotopes show affinity with the ordinary chondrites.

   and collections
UHaw: Hawai'i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, United States (institutional address; updated 25 Oct 2011)
UCD: University of California Dept Earth and Planetary Sciences 2119 Earth and Physical Sciences One Shields Avenue Davis, CA 95616, United States (institutional address; updated 18 Nov 2014)
Relict meteorite
Name: Österplana 065
Origin/pseudonym: Österplana, Sweden
Purchase or find date: 2011 June 26
Lat/long: 58°35'N, 13°26'E
Mass: 8 x 6.5 x 2 cm
Specimens: FMNH
Name assigned to:
Date assigned:
Assigned by:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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