NWA 10869 (5,743 g)

NWA 10869 (5,743 g)

Northwest Africa 10869 (NWA 10869)

(Northwest Africa)

Purchased: June 2016

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was purchased in 2016 from a meteorite dealer at the mineral fair in St.Marie aux mines, France.

Physical characteristics: The individual lacks any fusion crust and shows a grayish interior.

Petrography: The meteorite is a breccia dominantly composed of coarse- and more fine-grained basaltic clasts and minor clastic matrix. Calcic plagioclase and exsolved pyroxenes are the dominant mineral phases and are up to 1 mm in size. Minor phases are FeS, chromite, ilmenite, SiO2 and metallic iron. The meteorite contains shock melt veins.

Geochemistry:

low-Ca pyroxene: Fs60.8±0.6Wo2.6±0.4 (Fs60.0-61.9Wo2.0-3.6, n=15, FeO/MnO=30-32);

Ca-pyroxene: Fs26.2±0.4Wo43.8±0.8 (Fs25.6-27.2Wo42.8-45.1, n=14, FeO/MnO=28-32);

calcic plagioclase: An89.0±1.7 (An85.8-93.8, n=15)

 

Place of purchase: St.Marie aux Mines, France

Date: P June 2016

Mass (g): 228

Pieces :1

Class: Eucrite-br

Shock stage: moderate

Weathering grade: low

Ferrosilite (mol%): 60.8; 26.2

Wollastonite (mol%): 2.6; 43.8

Classifier: A. Greshake, MNB

Type spec mass (g): 23.6

Type spec location: MNB

Main mass: Hanno Strufe

Comments: Submitted by Ansgar Greshake

 

    69,00 €Preis
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