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Northwest Africa 7550 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7550 This is an OFFICIAL meteorite name. Abbreviation: NWA 7550 Observed fall: No Year found: 2012 Country: Morocco Mass: 225 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 128 approved meteorites classified as CK4. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 6 May 2013 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7550 (NWA 7550) Morocco Purchased: 2012 Classification: Carbonaceous chondrite (CK4) Physical characteristics: Moderately fresh fusion crust with friable white to gray interior. Petrography: Well-defined chondrules. Geochemistry: Olivine, Fa33.1 (FeO/MnO = 95); orthopyroxene, Fs24.7Wo 2.1; magnetite Cr2O3 = 4.1 wt %. Classification: CK4 Specimens: A total of 21 g are at PSF, DGregory holds the main mass | ||||||||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) 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 Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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