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| Northwest Africa 8007 | |||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 8007 This is an OFFICIAL meteorite name. Abbreviation: NWA 8007 Observed fall: No Year found: 2013 Country: Morocco Mass:  664 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 17 approved meteorites classified as L3.2. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||
| Comments: | Approved 14 Oct 2013 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 102:
Northwest Africa 8007 (NWA 8007) Morocco Purchased: 2013 Classification: Ordinary chondrite (L3.2) History: Purchased from a dealer in Morocco in 2013 by Steve Witt and Mr. Smara Addi. Physical characteristics: Three matching stones, dark brown weathered exterior, no fusion crust, sawn surface reveals densely packed chondrules of variable size. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous unequilibrated chondrules, many are porphyritic, apparent mean diameter 523±308 μm, range 150-2000 μm, n=52. Abundant opaque matrix, most chondrules with glass or mesostasis. Aluminous augite, Fe,Ni-metal, sulfide present. Geochemistry: (C. Agee and N. Muttik, UNM) Ferroan olivine Fa17.0±10.1, Fe/Mn=63±43, Cr2O3=0.14±0.17 wt%, range Cr2O3=0.01-0.58 wt%, CaO=0.11±0.08 wt%, n=32; low-Ca pyroxene Fs9.5±5.1Wo1.3±2.0, Fe/Mn=26±21, n=29. Classification: Ordinary chondrite (L3.2), transitional between type 3.2 and 3.15 based on ferroan olivine mean Cr2O3 content and sigma from Grossman and Brearley (2005). Weathering grade W1. Specimens: 25.7 g including a probe mount on deposit at UNM, Steve Witt holds the main mass. | ||||||||||||||||||||||||||
| Bibliography: |
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| Data from: MB102 Table 0 Line 0: |
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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) |
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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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| Photos: |
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Geography:
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Statistics: This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||