Stunning new Saharan Iron NWA 4703 specimen with unusual heat altered etch pattern! NWA 4703 is the Official name for this lovely IAB, octahedrite from the Saharan desert.
Writeup from Meteoritical Bulletin online:
Northwest Africa 4703 (NWA 4703)
Classification: Iron meteorite (IAB-sLL)
Petrography: Etched surface is curious: some bands mirror-like in their brightness, others dull. Differences depend on crystallographic orientation because dull crosses bright. Abundant Neumann lines. One 3x9 mm FeS inclusion. Silicates and schreibersite not identified.
Geochemistry: Co (mg/g) 4.79, Ni (mg/g) 85.2, Ga (µg/g) 76.9, Ge (µg/g) 269, As (µg/g) 16.6, Ir (µg/g) 2.78, Au (µg/g) 1.82.
Submitter: J. T. Wasson, UCLA.
NEW! Superb, 87g Thumbprinted NWA 4703 Main Mass! Price: Please enquire!
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