Type 1 Unequilibrated Eucrite 43.69g I NWA 11897
Northwest Africa 11897 | |||||||||||||||||||||||||||||
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Basic information |
Name: Northwest Africa 11897 This is an OFFICIAL meteorite name. Abbreviation: NWA 11897 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 43.9 g |
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Classification history: |
This is 1 of 81 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites |
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Comments: | Approved 2 Sep 2018 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11897 (NWA 11897) (Northwest Africa) Purchased: 2018 Classification: HED achondrite (Eucrite, unbrecciated) History: Purchased in March 2018 by Craig Zlimen and Dustin Dickens from a Moroccan meteorite dealer. Physical characteristics: Fusion crusted exterior; sawcut reveals a fine-grained, gray interior. Petrography: (C. Agee, UNM) This meteorite is a porphyritic basalt with pigeonite phenocrysts set in a groundmass of fine-grained quench crystals of pyroxene, plagioclase, silica, chromite, and Fe-sulfide. Pigeonite phenocrysts show igneous zoning. Geochemistry: (C. Agee, UNM) pigeonite Fs45.5±8.4Wo5.2±2.0, Fe/Mn=36±2, n=16. Classification: Unequilibrated, porphyritic eucrite; unbrecciated Specimens: 8.9 g including a probe mount on deposit at UNM, Craig Zlimen and Dustin Dickens hold the main mass. |
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Data from: MB107 Table 0 Line 0: |
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