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Northwest Africa 15430
Basic information Name: Northwest Africa 15430
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15430
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 111 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L6
Recommended:  L6    [explanation]

This is 1 of 12780 approved meteorites (plus 11 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15430 (NWA 15430)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (L6)

History: Purchased from a Moroccan dealer at the mineral show in Sainte-Marie-aux-Mines, France

Physical characteristics: Individual with mostly intact fusion crust.

Petrography: (K. Metzler, IfP) Brecciated and strongly shocked ordinary chondrite of high petrologic type. A few chondrule relicts occur. Secondary feldspar grains mostly >50 μm; all feldspar has been shock-transformed to maskelynite. Moderate amounts of Fe-Ni metal, partly oxidized by terrestrial weathering. Crosscutted by shock veins, containing ringwoodite grains up to 200 uµm in size.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa24.8±0.2 (Fa24.4-25.3; n=12) and the mean low-Ca pyroxene composition is Fs20.7±0.4Wo1.6±0.3 (Fs20.1-21.5Wo1.1-2.1; n=10).

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Sainte-Marie aux Mines, France
Date:P 2013
Mass (g):111
Pieces:1
Class:L6
Shock stage:C-S5
Weathering grade:W2
Fayalite (mol%):24.8±0.2
Ferrosilite (mol%):20.7±0.4
Wollastonite (mol%):1.6±0.3
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Anonymous
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Photos:
CreditPhotos
Public domain photographs:
Knut Metzler         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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