NWA 13499 (eucrite) – 153g main mass

675.00 

1 in stock

Description

153g main mass. Sold with label/certificate of authenticity.

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Northwest Africa 13499 (NWA 13499)

Algeria

Purchased: 2020 Jan

Classification: HED achondrite (Eucrite)

Petrography: (J. Gattacceca, CEREGE) Igneous rock with subopthitic texture. Main minerals are pyroxene (exsolved) and plagioclase with typical grain size 600 µm. Other minerals: metal, troilite, chromite, ilmenite. Vesicles up to 200 µm are present.

Geochemistry: Low-Ca pyroxene Fs42.9±0.9Wo3.7±0.9 (n=7), Ca-pyroxene Fs25.0Wo35.5 (n=2), Fs16.5Wo44.9 (n=2), FeO/MnO = 27.8±2.0 (n=11). Plagioclase An92.2±0.5Ab7.5±0.4Or0.4±0.0 (n=4).

Classification: Achondrite (eucrite).


Place of purchase:GuelmimDate:P 2020 JanMass (g):177.7Pieces:1Class:EucriteWeathering grade:lowMagnetic suscept.:2.45Classifier:J. Gattacceca, CEREGEType spec mass (g):21.2Type spec location:CEREGEMain mass:Pierre-Marie PeléComments:work name PM20AC1; submitted by Jérôme Gattacceca