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Northwest Africa 7256 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7256 This is an OFFICIAL meteorite name. Abbreviation: NWA 7256 Observed fall: No Year found: 2004 Country: Morocco Mass: 4.93 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||
Comments: | Approved 17 May 2012 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 100:
Northwest Africa 7256 (NWA 7256) Morocco Purchased: 2004 Classification: Carbonaceous chondrite (CV3) History: Purchased by Blaine Reed, Erfoud, Morocco, 2004. Physical characteristics: Many fragments, saw cut reveals numerous chondrules up to 5 mm set in dark brown matrix, parallel fractures. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a variety of chondrules PO, POP, and a few CAIs, fine-grained matrix, weathering veins. Geochemistry: (C. Agee and N. Wilson, UNM) Type I chondrules: olivine Fa1.9±1.4, Cr2O3=0.26±0.13 wt%, n=24; low-Ca pyroxene Fs2.6±2.2Wo1.5±1.2, Fe/Mn=14±7, n=18, Type II chondrules: Fa41.2±13.9, Fe/Mn=122±19, n=27. Classification: Carbonaceous chondrite (CV3), weathering grade W3. Specimens: 25.5 g including a probe mount on deposit at UNM, Reed holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1699: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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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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