Meteoritical Bulletin: Entry for Boura 002

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Boura 002

Basic information

Name: Boura 002
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Algeria
Mass: 1958 g

Classification
history:

Meteoritical Bulletin:	MB 112	(2024)	Mesosiderite
Recommended:			Mesosiderite [explanation]

This is 1 of 279 approved meteorites classified as Mesosiderite. [show all]
Search for other: Mesosiderites, Metal-rich meteorites

Comments:

Approved 15 Jul 2023

Writeup

help

Writeup from MB 112:

Boura 002 26°46’54"N, 0°59’21"W

Adrar, Algeria

Find: 2021 Nov

Classification: Mesosiderite

Petrography: (K. Metzler, IfP) Metal-rich achondritic breccia, consisting of mineral fragments (mainly pyroxene and plagioclase) up to several mm, set in a finer grained recrystallized matrix. Many pyroxene grains show thin exsolution lamellae. Modal amount of plagioclase >10 vol%. Severe metal oxidation with crisscrossed oxide veins throughout the sample. Accessories are a silica polymorph and troilite. Metal and associated weathering products make up ~30 vol% of the meteorite.

Geochemistry: Mineral compositions and geochemistry: Low-Ca pyroxene (host): Fs_33.1±4.5Wo_3.4±0.7(Fs_23.4-40.5Wo_2.2-4.3); mean Fe/Mn (at.): 25; n=15. Ca-rich pyroxene (exsolution lamellae): Fs_32.0±1.2Wo_38.4±0.2(Fs_30.8-33.3Wo_38.2-38.6); mean Fe/Mn (at.): 23; n=3. Plagioclase: An_92.8±3.1Or_0.1±0.1(An_86.5-96.7Or_0.0-0.3); n=13.

Classification: Mesosiderite, based on texture, modal composition and mineral chemistry.

Data from:
  MB112
  Table 0
  Line 0:

State/Prov/County:	Adrar
Place of purchase:	Tindouf, Algeria
Date:	2021 Nov
Latitude:	26°46'54"N
Longitude:	0°59'21"W
Mass (g):	1958
Pieces:	Several
Class:	Mesosiderite
Shock stage:	M-S1
Weathering grade:	high
Ferrosilite (mol%):	33.1±4.5; 32.0±1.2
Wollastonite (mol%):	3.4±0.7; 38.4±0.2
Classifier:	K. Metzler, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	Meteorite Museum & Shop, Stephan Decker, Oberwesel, 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?

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Photos:

Credit	Photos
Public domain photographs:
Knut Metzler

Geography:

Algeria

Algeria

Coordinates:
Recommended::	(26° 46' 54"N, 0° 59' 21"W)

Statistics:
This is 1 of 210 approved meteorites from Adrar, Algeria (plus 1 unapproved name)
This is 1 of 1402 approved meteorites from Algeria (plus 33 unapproved names) (plus 4 impact craters)

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