NWA 7023 (EUC-PMCT) Meteorite - 103g Main Mass

Brand: Eucrites
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Availability: 1
Price: $3,600.00

This is an absolutely beautiful Eucrite.  It's large to boot and has 2 cut faces which display a beautiful matrix.  The exterior is characteristic of a eucrite crust as seen in the pictures.  It rests nicely in several poses and would be a beautiful addition to any collection.

The total known weight of this meteorite is 473 grams.  This is the main mass--the largest intact piece.

Provenance: G. Catterton, original purchaser and person to submit it for analysis and classification.  A. Irving, classifying scientist, UW.

Writeup from the Meteoritical Bulletin:

Northwest Africa 7023 (NWA 7023)

(Northwest Africa)

Purchased: 2003

Classification: HED achondrite (Eucrite, polymict)

Petrography: (A. Love, App) Breccia consisting of 2.4-6.0 mm angular to subrounded clasts of dominant (~22 vol.%) fine- to medium-grained cumulate-textured eucrite, subordinate (~7%) fine-grained variolitic-textured eucrite, granulated and glassy breccia clasts, and vitrophyric clasts set within a finer grained fragmental matrix of plagioclase, augite, pigeonite, orthopyroxene, ilmenite and troilite.

Geochemistry: (A. Irving and S. Kuehner, UWS) Unexsolved pigeonite (core Fs38.4Wo7.3, rim Fs53.9Wo6.1, Fe/Mn=28-31). Exsolved pigeonite consists of host orthopyroxene (Fs47.7-55.1Wo5.6-4.8, Fe/Mn=27-29), with exsolution lamellae of clinopyroxene (Fs23.0-26.8Wo39.8-41.5, Fe/Mn=27-28).

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