NWA 12537Achondrite Meteorite - 5×3×2 cm - 25 g - (1)

This unique Officially Classified meteorite NWA 12537 Eucrite genomict breccia Was recently found and purchased on July 2018 from an Algerian dealer In Algeria and classified by world renowned and profoundly respected Anthony J. Irving and team at University of Washington. Northwest Africa 12537 this is an official meteorite name This is very rare and fresh Eucrite genomict breccia meteorite On offer complete individual specimen of 25 gram fresh, crusted and beautiful With flight marked primary fusion crust NWA 12537 EUCRITE GENOMICT BRECCIA TOTAL : 25 GRAM GUARANTEED AUTHENTICITY The authenticity of this meteorite has a 100% guarantee. Signed Certificate of Authenticity Included. First class delivery and provenance provided. TRULY A BEAUTIFUL MUSEUM QUALITY SHOWPIECE FRESH FUSION CRUST WITH VELVETY TEXTURE AND TONS OF CONTRACTION CRACKS OFFICIAL CLASSIFICATION DATA SOURCE: THE METEORITICAL SOCIETY INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE LUNAR AND PLANETARY INSTITUTE METEORITICAL BULLETIN DATABASE header\t Northwest Africa 12537 Basic information\t. Name: Northwest Africa 12537 This is an OFFICIAL meteorite name. Abbreviation: NWA 12537 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: help 36 g Classification history: \t Recommended: \t\t\t. Eucrite-br This is 1 of 160 approved meteorites classified as Eucrite-br. Comments: \t. Approved 5 Apr 2019 Writeuphelp\t Writeup from MB 108: Northwest Africa 12537 (NWA 12537) (Northwest Africa) Purchased: 2018 Jul Classification: HED achondrite (Eucrite, brecciated) History: Purchased by Mbark Arjdal in July 2018 from an Algerian dealer. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of closely-packed eucrite clasts in a very sparse matrix (~2 vol. %) . The clasts exhibit two very different textures: fine-grained ophitic and very fine-grained granulitic with larger pyroxene and plagioclase relics. Minerals are unexsolved pigeonite (of the same color in both lithologies) , anorthite, silica polymorph, ilmenite and troilite. Geochemistry: Pigeonite (Fs51. 4-53. 0Wo14. 0-11. 0, Fe. O/Mn. O = 32-35, N = 3) , anorthite (An90. 6-90. 8Or0. 4, N = 2) . Classification: Eucrite (genomict breccia) . Specimens: 7. 3 g including one polished thin section at UWB; remainder with Mr. M. Arjdal. Data from: MB108 Table 0 Line 0: \t Place of purchase: \t. Algeria Date: \t. P 2018 Jul Mass (g) : \t36 Pieces: \t1 Class: \t. Eucrite-br Shock stage: \tlow Weathering grade: \tlow Ferrosilite (mol%) : \t51. 4-53. 0 Wollastonite (mol%) : \t14. 0-11. 0 Classifier: \t. A. Irving and S. Kuehner, UWS Type spec mass (g) : \t7. 3 Type spec location: \t. UWB Main mass: \t. M. Arjdal Comments: \t. Work name Arj 128; submitted by A. Irving