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Northwest Africa 13529 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13529 This is an OFFICIAL meteorite name. Abbreviation: NWA 13529 Observed fall: No Year found: 2018 Country: Morocco Mass: 1690 g | ||||||||||||||||||||||||||||
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 11 Nov 2020 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13529 (NWA 13529) Morocco Purchased: 2018 Apr Classification: Ordinary chondrite (H4) History: Purchased in Morocco by Sergey Vasiliev and Marc Jost in April 2018. Physical characteristics: Total mass 1690 g. The crust is gray and reddish-brown in weathered surface. The interior of the meteorite is dark gray with visible, abundant chondrules and metal particles. Petrography: (P. Yu. Plechov, FMMR). Petrographic observation of a polished section shows that the meteorite consists of chondrules with sizes from 150 to 700 µm in an oxidized matrix. Chondrules have sharp boundaries. PO-IIA-type prevails among chondrules (also present POP-chondrules and in fewer non porphyric chondrules). Feldspar is submicrometer size in chondrule matrix. Matrix contains a lot partially oxydized of troilite and metal blebs. These features indicate that meteorite corresponds to petrologic type 4. Olivine has no undulatory extinction, there are no shock veins or melt pockets. Geochemistry: Mineral composition and Geochemistry: EDS analyses (P. Yu. Plechov, FMMR). Olivine Fa17.6±0.3 (N=6), Low-Ca pyroxene Fs13.5±2.2Wo0.47±0.12 (N=5). Kamacite Fe 93.26 wt%, Ni 6.65 wt%, Co 0.96 wt%. Taenite (N=2) Ni 51.32 wt%, Co 0.36 wt.%. H2O 2.8±0.7 wt%, C 0.17 wt.% (CNH elemental analyzer). Classification: (P. Yu. Plechov, FMMR). Ordinary chondrite. H4, S1, W2. Specimens: 31 g and thin section, FMMR. | ||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
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Institutions and collections |
FMMR: Fersman Mineralogical Museum, Leninskiy prospekt 18 korpus 2, Moscow, Russia, 119071, Russia; Website (institutional address; updated 24 Feb 2018) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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