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Northwest Africa 8300
Basic information Name: Northwest Africa 8300
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8300
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 48.9 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  CM2
Recommended:  CM2    [explanation]

This is 1 of 541 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 14 Mar 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8300 (NWA 8300)

Morocco

Purchased: June 2013

Classification: Carbonaceous chondrite (CM2)

Petrography: (M.A. Ivanova, Vernad) The meteorite consists of chondrules, their fragments, and refractory inclusions embedded in a fine-grained matrix. Mesostasis of many chondrules replaced by carbonate material. The main minerals of chondrules are olivine and pyroxene. The minor phases are plagioclase, spinel, chromite, sulfides, Fe,Ni metal grains and carbonates. The main minerals of refractory inclusions are spinel, Al-Ti-diopside, melilite, and anorthite.

Geochemistry: Mineral composition and geochemistry: Olivine (EMP) is Fa0.85-41.6. Pyroxene is represented by low-Ca pyroxene Fs0.9-43Wo0.7-3.8 and augite Fs0.7-2.1Wo32-43. Oxygen isotopic composition (I.A. Franchi, OU): δ17O = 2.36, δ18O = 10.51, Δ17O = -3.14 (all ‰).

Classification: carbonaceous chondrite (CM2)

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Sainte Marie, France
Date:P June 2013
Mass (g):48.9
Pieces:1
Class:CM2
Classifier:M. A. Ivanova, Vernad
Type spec mass (g):10
Type spec location:Vernad
Main mass:DMUH
Comments:Field name is Rum-D; submitted by C.A. Lorenz
Plots: O isotopes:  
Institutions
   and collections
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
DMUH: Dedovsk Museum of Universe History, Russia; Website (institutional address; updated 26 Sep 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1503 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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