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Northwest Africa 12429
Basic information Name: Northwest Africa 12429
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12429
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 1400 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  H6
Recommended:  H6    [explanation]

This is 1 of 6213 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Jan 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12429 (NWA 12429)

(Northwest Africa)

Purchased: 2018 Jun

Classification: Ordinary chondrite (H6)

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

Petrography: (K. Metzler, IfP) Ordinary chondrite with recrystallization texture, high metal content and few visible chondrules. Secondary feldspar grains mostly >50 µm.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa19.1±0.2 (Fa18.8-19.5; n=12). The mean low-Ca pyroxene composition is Fs16.8±0.3Wo1.3±0.2 (Fs16.1-17.2Wo1.0-1.6; n=12).

Classification: H chondrite based on mineral chemistry. Petrologic type 6 based on the equilibrated state of olivine and pyroxene and grain size of secondary plagioclase.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Sainte-Marie-aux-Mines, France
Date:P 2018 Jun
Mass (g):1400
Pieces:1
Class:H6
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.1±0.2
Ferrosilite (mol%):16.8±0.3
Wollastonite (mol%):1.3±0.2
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Leonard Behner, Hamburg, Germany
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 Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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