Northwest Africa 14682 | |||||||||||||||
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Name: Northwest Africa 14682 This is an OFFICIAL meteorite name. Abbreviation: NWA 14682 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 14 kg | |||||||||||||||
This is 1 of 117 approved meteorites classified as Eucrite-unbr. | |||||||||||||||
Approved 16 May 2022 | |||||||||||||||
Writeup from MB 111: Northwest Africa 14682 (NWA 14682) (Northwest Africa) Purchased: 2020 Classification: HED achondrite (Eucrite, unbrecciated) History: Purchased January, 2020, by Mark Lyon from a Northwest African dealer Physical characteristics: Single stone with black fusion crust. Interior shows unbrecciated texture with millimeter-sized dark green pyroxenes and white plagioclase crystals. Cut and broken surfaces shows equigranular, medium grained, basaltic texture. Petrography: (A. Ross, UNM; D. Dickens, NMMS; C. Agee, UNM) Microprobe examination of a polished mount shows approximately equal amounts of pyroxene and plagioclase grains often in poikiloblastic arrangement. Some pyroxenes have exsolution. Ubiquitous silica, ilmenite, and troilite. No metal was observed. Geochemistry: (A. Ross, UNM) Low-Ca pyroxene Fs61.7±0.2Wo1.8±0.2, Fe/Mn=33±1, n=7; high-Ca pyroxene Fs29.5±5.0Wo40.0±5.8, Fe/Mn=32±2, n=5; plagioclase An84.7±4.3, n=7; Classification: Achondrite (equilibrated unbrecciated eucrite). Equilibration and clear compositional separation of low-calcium and high-calcium pyroxenes is consistent with type 6 eucrites. Specimens: 28.6 g including a probe mount on deposit at UNM, Mark Lyon holds the main mass. | |||||||||||||||
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This gorgeous meteorite would make a fine addition to any collection. This material is very solid and displays nicely. I spend a great deal of time preparing these meteorites for your collection.
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