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Northwest Africa 14319
Basic information Name: Northwest Africa 14319
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14319
Observed fall: No
Year found: 2021
Country: Morocco
Mass:help 76 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 614 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 11 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14319 (NWA 14319)

Morocco

Purchased: 2021 August

Classification: Carbonaceous chondrite (CM2)

History: The meteorite was purchased from a dealer in Morocco.

Physical characteristics: Many small dark grayish to black and brown individuals mainly without fusion crust.

Petrography: Carbonaceous chondrite composed of small (apparent mean diameter about 300 µm) chondrules, chondrule pseudomorphs, mineral fragments, and rare CAIs many of which surrounded by fine-grained dust rims set into abundant fine-grained matrix. Matrix is Fe-rich with abundant Fe-sulfides and rare Ca-carbonates. Low analytical totals of matrix analyses suggest the presence of hydrous phyllosilicates. No apparent lithologies with different petrologic type on thin section scale.

Geochemistry: The olivines and low Ca-pyroxenes are highly variable in composition with Fa0.4-38.4 (mean Fa4.1±7.5; n = 31) and Fs0.7-4.6 (mean Fs1.6±0.8; n = 30). Oxygen isotopic composition (A. Pack, UGött): δ17O = -1.437, δ18O = 3.504 (all permil).

Classification: Carbonaceous chondrite (CM2)

Data from:
  MB110
  Table 0
  Line 0:
Origin or pseudonym:Desert
Place of purchase:Dealer in Morocco
Date:P 2021 August
Mass (g):76.0
Pieces:several
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):4.1±7.5 (n=31)
Ferrosilite (mol%):1.6±0.8 (n=30)
Wollastonite (mol%):1.2±0.6 (n=30)
Classifier:K.Klemm, M.Patzek
Type spec mass (g):17.6
Type spec location:IfP
Main mass:Gregor Pacer
Comments:Working name: CM Markus; submitted by Klemm K.
Plots: O isotopes:  
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
UGött: Geowissenschaftliches Museum, Georg-August-Universität Göttingen, Goldschmidtstr. 3, 37077 Göttingen, Germany; Website (institutional address; updated 26 Nov 2020)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1894 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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