Meteoritical Bulletin: Entry for Northwest Africa 6436

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Northwest Africa 6436

Basic information

Name: Northwest Africa 6436
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6436
Observed fall: No
Year found: 2009
Country: Morocco
Mass: 115.7 g

Classification
history:

Meteoritical Bulletin:	MB 101	(2012)	Mesosiderite-B2
Recommended:			Mesosiderite-B2 [explanation]

This is 1 of 10 approved meteorites classified as Mesosiderite-B2. [show all]
Search for other: Class B mesosiderites, Mesosiderites, and Metal-rich meteorites

Comments:

Had been released on 30 Aug 2012 as NWA 5436.
Approved 31 Aug 2012

Writeup

Writeup from MB 101:

Northwest Africa 6436 (NWA 6436)

Morocco

Found: 2009

Classification: Mesosiderite (group B2)

Petrography: Partially recrystallized orthopyroxene breccia with minor pigeonite, plagioclase, SiO₂, metal, and merrilite. Moderate weathering and low shock. Orthopyroxene, Fs_27.3Wo_2.2, Fe/Mn=34; pigeonite, Fs₄₅Wo₈; plagioclase, An₉₃Or_3.Mesosiderite B2 (based on the greater amount of orthopyroxene to plagioclase and low degree of recrystallization).

Data from:
  MB101
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	2009
Mass (g):	115.7
Pieces:	11
Class:	Mesosiderite-B2
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	30.1
Ferrosilite (mol%):	25.6
Wollastonite (mol%):	2.2
Classifier:	T. Bunch and J. Wittke, NAU
Type spec mass (g):	22.65
Type spec location:	PSF
Main mass:	F. Kuntz
Comments:	Submitted by Wittke

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
Kuntz: Fabien Kuntz, France; Website (private address)
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States (institutional address; updated 12 Apr 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015

Find references in NASA ADS:
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Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater)

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