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Northwest Africa 3358 | |||||||||||||||||||||||
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Basic information | Name: Northwest Africa 3358 This is an OFFICIAL meteorite name. Abbreviation: NWA 3358 Observed fall: No Year found: 2001 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||
Classification history: |
This is 1 of 5 approved meteorites classified as H3.10. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||
Comments: |
Approved 3 Feb 2005 Revised 8 Jun 2018: Reclassified | ||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 3358 (NWA 3358) (Northwest Africa) Find: 2001 Classification: Ordinary chondrite (H3.10) History: Purchased from a Moroccan dealer at the mineral show in Sainte-Marie-aux-Mines, France. Petrography: (K. Metzler, IfP): Unshocked ordinary chondrite of very low petrologic type, consisting of small chondrules (chemical types I and II) of all major textural types (PO, POP, PP, BO, C, Al-rich). Chondrules with sulfide rims and igneous rims were observed. Several porphyritic chondrules contain mesostasis glass. The apparent mean chondrule size is 250 μm. Geochemistry: Olivine composition: Fa12.7±9.0 (0.6-28.1; n=32); Low-Ca pyroxene composition: Fs11.3±9.3 (1.4-29.9); Wo1.1±0.9 (0.2-4.3; n=31). Ferroan olivine in type II chondrules (EPMA): Cr2O3=0.34±0.09 wt% (n=20.) Oxygen isotope values of an acid-washed aliquot of ~1 g bulk sample (A. Pack, Univ. Göttingen): δ17O = 2.91, δ18O = 4.67, Δ17O = 0.46 (linearized, all permil). Classification: Ordinary chondrite (H3.10). H chondrite based on small mean apparent chondrules size and high amount of metal. Petrologic type 3.10 based on the mean Cr2O3 content of olivine in type II chondrules using the nomogram of Grossman and Brearley (2005). The sigma value for Cr2O3 variation is fairly low but comparable to that for the H3.10 chondrite NWA 8061. | ||||||||||||||||||||||
Bibliography: |
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Data from: MB90 Table 2 Line 211: |
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Plots: | O isotopes: | ||||||||||||||||||||||
Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) Mun: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006) Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Photos: |
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Geography: |
Statistics: This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |