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Northwest Africa 7875
Basic information Name: Northwest Africa 7875
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7875
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 476 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H7
Recommended:  H7    [explanation]

This is 1 of 21 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 29 May 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7875 (NWA 7875)

Morocco

Purchased: Feb 2013

Classification: Ordinary chondrite (H7)

History: Purchased by Mendy Ouzillou from a Moroccan meteorite dealer, February 2013.

Physical characteristics: Single stone, dark-brown exterior, saw cuts reveal many sub-millimeter metal blebs, but a few up to 3 mm, set in a fine-grained, dark-brown, crystalline matrix.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a recrystallized chondritic texture though lacking chondrules. Plagioclase up to 200 μm, numerous texturally equilibrated metal domains 300-500 μm, ~50% of metal is oxidized, oxide veinlets throughout.

Geochemistry: (C. Agee and L. Burkemper, UNM) Fa19.2±0.1, Fe/Mn=39±1, n=5; low-Ca pyroxene Fs16.5±0.3Wo4.2±0.8, Fe/Mn=24±1, n=6; high-Ca pyroxene Fs9.2±0.2Wo37.4±1.0, Cr2O3=1.32 wt%, Fe/Mn=19±1, n=2; plagioclase Ab70An27Or2.

Classification: Ordinary chondrite (H7), type 7 based on high Wo-content in orthopyroxene and absence of chondrules, weathering grade W2.

Specimens: 21 g including a probe mount on deposit at UNM, Mendy Ouzillou holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P Feb 2013
Mass (g):476
Pieces:1
Class:H7
Weathering grade:W2
Fayalite (mol%):19.2±0.1
Ferrosilite (mol%):16.5±0.3, 9.2±0.2
Wollastonite (mol%):4.2±0.8, 37.4±1.0
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Mendy Ouzillou
Comments:Submitted by C. Agee
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1417 approved meteorites from Morocco (plus 15 unapproved names) (plus 1 impact crater)

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