Achondrite meteoriet - 1.836 g

Omschrijving
Achondrite meteoriet - 1.836 g
Marokko

FRAGMENTS - Weight: 1.836 g slice and stub.

Delivered with certificate of authenticity.

Place of purchase: Mauritania.
Date: P 2015
Mass (g): 3,300.
Pieces: 27.
Class: Lunar.
Shock stage: High.
Weathering grade: Moderate.
Fayalite (mol%): 52.9.8±7.1, 30.6±3.0, 40.3±2.9.
Ferrosilite (mol%): 31.1±15.8, 39.4±15.8, 35.4±14.3.
Wollastonite (mol%): 22.1±7.6, 21.7±10.9, 23.3±10.0.
Classifier: C. Agee, UNM.
Type spec mass (g): 24.
Type spec location: UNM.
Main mass: Aziz Habibi.
Comments: AH-170; submitted by C. Agee, UNM
Northwest Africa 10203 (NWA 10203).

(Northwest Africa).

Purchased: 2015.

Classification: Lunar meteorite.

History: purchased by Aziz Habibi in 2015; reportedly found near the border between Mauritania and Mali.

Physical characteristics: Twenty-seven pieces of identical appearance were reportedly found together. Irregular exterior, no fusion crust. Saw cutting reveals a polymict breccia with numerous fragmented light and dark clasts.

Petrography: (C. Agee, UNM) this polymict breccia has at least four distinct lithologies. 1) unbrecciated olivine gabbro with zoned clinopyroxene (~75%), acicular, plumose plagioclase (~15%), olivine (~5%), and minor titanomagnetite; 2) fragmental anorthositic gabbro breccia with ~75% plagioclase; 3) fragmental gabbroic breccia with approximately equal proportions of plagioclase, pyroxene and olivine; 4) shock melt veins and pools, some of which are vesicular. Accessory FeNi-metal, silica, ilmenite, troilite, chromite, and phosphate were observed in the fragmental breccias.
Classification: Lunar (polymict breccia).

Kavelgegevens
Minerale vorm / Soort meteoriet
Achondrite meteoriet
Supplement
Maan. Hiel en volle hak NWA 10203
Gewicht
1,84 g
Oorsprong (Land)
Marokko
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