57 gm muonionalusta Meteorite slice Sweden iron nickel ring for Sale

57 gm muonionalusta Meteorite slice Sweden iron nickel ring For Sale

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57 gm muonionalusta Meteorite slice Sweden iron nickel ring:
$112.46

certificate of authenticity comes with every meteorite I sell.
muonionalusta Meteorite slab, Sweden, Complete Individual Specimen. 57 gms 1.75x1.25 inch. 7 mm thick. great for rings; from Sweden, You can Google quite a bit of history of this meteorite fall. Meteorite, muonionalusta, near arctic circle.ETCHEDMuonionalusta meteoriteThe Muonionalusta meteorite, on loan to thePrague National Museumin 2010. It is the largest meteorite ever exhibited in the Czech Republic.TypeIVA (Of)Structural classificationFine Ga, fallNoFound date1906Strewn fieldYesRelated media on Wikimedia Commons

TheMuonionalusta meteorite(Finnish ameteoriteclassified as fineoctahedrite, type IVA (Of) which impacted in northernScandinavia, west of the border betweenSwedenandFinland, about one million years BCE.

The first fragment of the Muonionalusta meteorite was found in 1906 near the village of Kitkiöjärvi.[2]Around forty pieces are known today, some being quite large. Other fragments have been found in a 25-by-15-kilometre (15.5mi ×9.3mi) area in thePajala districtofNorrbotten County, approximately 140 kilometres (87mi) north of theArctic Circle.

The meteorite was first described in 1910 by Professor A. G. Högbom, who named it after the nearby place Muonionalusta on theMuonio River. It was studied in 1948 by ProfessorNils Göran David Malmqvist.[3]The Muonionalusta meteorite, probably the oldest known meteorite (4.5653 ± 0.0001 billion years),[4]marks the first occurrence ofstishovitein an iron meteorite.

The nameMuonionalustais Finnish: it comes from the name Muonio (+ possessive particle-(o)n-) andalusta, which in this context means "a place below", i.e. downstream fromMuonio.

Description[edit]

Studies have shown it to be the oldest discovered meteorite impacting the Earth during theQuaternaryPeriod, about one million years ago. It is quite clearly part of the iron core or mantle of a planetoid, which shattered into many pieces upon its fall on our planet.[5]Since landing on Earth the meteorite has experienced four ice ages. It was unearthed from a glacial moraine in the northerntundra. It has a strongly weathered surface covered with cemented faceted pebbles.

CompositionNew analysis of this strongly shock-metamorphosed iron meteorite has shown a content of 8.4%nickeland trace amounts of rare elements—0.33 ppmgallium, 0.133 ppmgermaniumand 1.6 ppmiridium. It also contains the inclusions oftroilite.[3]For the first time, analysis has proved the presence of a form ofquartzaltered by extremely high pressure—stishovite,[3]probably a pseudomorphosis aftertridymite. From the article "First discovery of stishovite in an iron meteorite":[2]

Stishovite, a high pressure polymorph of SiO2, is an exceptionally rare mineral...and has only been found in association with a few meteorite impact structures.... Clearly, the meteoritic stishovite cannot have formed by isostatic pressure prevailing in the core of the parent asteroid.... One can safely assume then that stishovite formation(in the Muonionalusta meteorite)is connected with an impact event. The glass component might have formed directly as a shock melt....