NWA 15027 Mesosiderite breccia meteorite Found in January 2022 in Niger. 37 Grams GUARANTEED AUTHENTICITY. You are buying a 100 % guaranteed authentic meteorite combined with a signed certificate of authenticity. Shipping: First class express delivery and tracing will be provided. Free shipping worldwide via express delivery service, tracked and traced. Official classification data source: Northwest Africa 15027 Basic information Name: Northwest Africa 15027 This is an OFFICIAL meteorite name. Abbreviation: NWA 15027 Observed fall: No Year found: 2022 Country: Niger Mass: 985 g Classification8 Mesosiderite Comments: Approved 4 Mar 2023 Writeup Writeup from MB 112: Northwest Africa 15027 (NWA 15027) Niger Purchased: 2022 Jan Classification: Mesosiderite History: Found in Niger and in January 2022. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) This specimen is a heterogeneous breccia containing sporadic larger, polygranular aggregates of olivine (up to 7 by 8 mm in size) and smaller clasts of anorthite in a matrix composed in some places of intergrown orthopyroxene and anorthite with minor silica polymorph and in other places composed of intergrown metal and orthopyroxene. Kamacite (typically altered to Fe oxides) is distributed irregularly. The original metal content is estimated to ~40 vol%. Accessory phases include troilite, Al-Mg-rich chromite and merrillite. Cross-cutting veinlets of secondary Fe hydroxides are present. Geochemistry: Orthopyroxene (Fs28.0-28.8Wo1.5-2.1; Fs35.4-36.1Wo3.2-3.5; FeO/MnO = 26-29; N = 4), olivine (Fa27.2-30.1, FeO/MnO = 41-43, N = 6), anorthite (An90.2-93.6Or0.2, N = 3). Classification: Mesosiderite (breccia). Data from: MB112 Table 0 Line 0: Place of purchase: Niger Date: P 2022 Jan Mass (g): 985 Pieces: many Class: Mesosiderite Shock stage: low Weathering grade: moderate Fayalite (mol%): 27.2-30.1 Ferrosilite (mol%): 28.0-36.1 Wollastonite (mol%): 1.5-3.4 Classifier: A. Irving, UWS, and P. Carpenter, WUSL Type spec mass (g): 23.0 Type spec location: UWB