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Northwest Africa 10723
Basic information Name: Northwest Africa 10723
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10723
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 70 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  CK5
Recommended:  CK5    [explanation]

This is 1 of 162 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 16 Jul 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10723 (NWA 10723)

(Northwest Africa)

Purchased: Dec 2016

Classification: Carbonaceous chondrite (CK5)

History: The meteorite was bought in 2016 from a meteorite dealer in Zagorra, Morocco.

Physical characteristics: The meteorite displays a light-grayish to greenish interior.

Petrography: Sparse, clearly defined and separated chondrules are set into abundant matrix dominantly composed of olivine and less abundant intermediate feldspar, Cr-rich magnetite, low-Ca pyroxene and Ca-pyroxene. All mafic minerals are compositionally equilibrated. Chondrules measure up to 1.2 mm; feldspar grains are 100-150 μm in size.

Geochemistry: olivine: Fa31.2±0.2, FeO/MnO is 137.8±17.3, n=21; low-Ca pyroxene: Fs27.6Wo1.9 (N=2); Ca-pyroxene: Fs10.2Wo43.9 (N=32); Cr2O3 in magnetite: 4.6 wt% (N=5).

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Zagorra, Morocco
Date:P Dec 2016
Mass (g):70
Pieces:7
Class:CK5
Shock stage:S2
Weathering grade:low
Fayalite (mol%):31.2±0.2 (n=21)
Ferrosilite (mol%):27.6; 10.2
Wollastonite (mol%):1.9; 43.9
Classifier:A. Greshake, MNB
Type spec mass (g):14.1
Type spec location:MNB
Main mass:Hanno Strufe
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7328 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

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