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| Northwest Africa 15301 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 15301 This is an OFFICIAL meteorite name. Abbreviation: NWA 15301 Observed fall: No Year found: 2011 Country: Morocco Mass:  4.49 kg | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||
| Comments: | Approved 1 Oct 2022 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Northwest Africa 15301 (NWA 15301) Morocco Purchased: 2011 Classification: Ordinary chondrite (H4) History: Sample was purchased in 2011 at the Tucson mineral show from AAaronson who acquired it from Morocco. Sample is catalogued at ROM as M60307. Physical characteristics: Incomplete fusion crust showing regmaglypts. Broken surfaces have visible chondrules. All surfaces show mature desert polish. Petrography: Cut faces show abundant metal in a rusty brown chondritic matrix. In polished thin section, chondrules of types POP, PO, RP, CC and BO are well-defined in a dark matrix, and have average diameter 463±210 µm (n=45). Chondrule mesostasis is amorphous to finely recrystallized. Olivine and pyroxene grains typically show sharp extinction. Metal grains are surrounded by Fe oxides. In BSE images, Ca-poor pyroxene shows subtle compositional zoning. Geochemistry: EPMA: Olivine: Fa17.50±0.51 (n=29); Ca-poor pyroxene: Fs14.36±3.22 Wo1.26±0.90 (n=22); Ca-rich pyroxene: Fs6.05±0.76Wo41.36±5.25 (n=11). Magnetic susceptibility measured on a 27.18 g endpiece is log χ (× 10-9 m3/kg) = 4.89. Classification: Ordinary chondrite: H4 (S1) W3. Chondrule measured size and definition is consistent with an H chondrite. EPMA olivine and pyroxene compositions and compositional variation indicate H4 chondrite. Bulk magnetic susceptibility is consistent with a weathered H chondrite. Specimens: Type specimen location: ROM. Main mass: Gregory. | ||||||||||||||||||||||||||||||||
| Data from: MB111 Table 0 Line 0: |
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| Institutions and collections |
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011) UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015) DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography:
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Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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| Revision history: |
This lists important revisions made to data for this record.
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