Meteoritical Bulletin: Entry for Northwest Africa 10278

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Northwest Africa 10278

Basic information

Name: Northwest Africa 10278
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10278
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 6.3 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	CK3
Recommended:			CK3 [explanation]

This is 1 of 79 approved meteorites classified as CK3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites

Comments:

Approved 3 Oct 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 10278 (NWA 10278)

(Northwest Africa)

Purchased: 2014 Sep

Classification: Carbonaceous chondrite (CK3)

History: Purchased by Dr. David Gregory in September 2014 from a Moroccan dealer at the Denver Show.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, separated chondrules (apparent diameter up to 3.5 mm) containing Cr-magnetite plus fine-grained amoeboid CAI are set in a deep brown, turbid matrix.

Geochemistry: Olivine (Fa_1.4-44.3, N = 3), orthopyroxene (Fs_0.8Wo_5.0; Fs_11.5Wo_1.0, N = 2), subcalcic augite (Fs_4.3Wo_26.8), diopside (Fs_1.9-2.2Wo_50.4-59.0, N = 2). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively, δ¹⁷O -5.487, -6.781, -12.996; δ¹⁸O -1.735, -3.623, -9.745; Δ¹⁷O -4.571, -4.868, -7.851 per mil.

Classification: Carbonaceous chondrite (CK3).

Specimens: The entire specimen including a polished thin section is reposited at ROM.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Denver
Date:	P 2014 Sep
Mass (g):	6.27
Pieces:	1
Class:	CK3
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	1.4-44.3
Ferrosilite (mol%):	0.8; 11.5; 4.3; 1.9-2.2
Wollastonite (mol%):	5.0; 1.0; 26.8; 50.4-59.0
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	6.27
Type spec location:	ROM
Main mass:	ROM
Comments:	ROM 101; submitted by A. Irving

Plots:

O isotopes:

Institutions
and collections

ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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