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Rafsa 007
Basic information Name: Rafsa 007
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2023
Country: Algeria
Mass:help 531 g
Classification
  history:
Recommended:  Angrite    [explanation]

This is 1 of 53 approved meteorites classified as Angrite.   [show all]
Search for other: Achondrites, Angrites
Comments: Approved 31 Jan 2024
Writeuphelp
Writeup from MB 113:

Rafsa 007        28.642936°N, 8.199231°W

Tindouf, Algeria

Purchased: 2023

Classification: Angrite

History: Reportedly several groups of Sahrawi meteorite hunters found several fragments of this meteorite in an area ~100 km north of Tindouf at the end of summer 2023.

Petrography: (K. Metzler, IfP) Ultramafic rock with granular texture, mainly consisting of Ca-rich olivine (up to several mm) which encloses Al-Ti-bearing diopside (up to ~1 mm) and small amounts of Cr-bearing pleonast spinel (up to ~0.5 mm) and anorthite. The latter frequently occurs as thin (<~30 µm) rims around spinel grains. Accessories are Fe-Ni metal, troilite, and merrillite. Much of the metal has been terrestrially altered and forms thin veins crosscutting the entire rock.

Geochemistry: Mineral compositions and geochemistry: Olivine composition: Fa39.0±0.4 (Fa38.4-39.5); Fe/Mn (at.): 87.4; CaO = 1.0-1.3 wt%; n=13. Pyroxene composition: Fs10.7±0.6 Wo52.9±0.6 (Fs9.7-11.6 Wo51.8-54.0); Fe/Mn (at.): 52.9; Al2O3 (wt%) = 6.9-9.5; TiO2 (wt%) = 1.6-2.4; n =11. Feldspar composition: An99.4±0.5 Or0.0±0.0 (An98.5-100.0 Or0.00); n=12. Pleonast spinel: Mg/(Mg+Fe (at.) = 0.47-0.50; Cr2O3 (wt%) = 4.5-5.5; Al2O3 (wt%) = 56.9-58.6; n=14.

Classification: Plutonic angrite, based on mineral chemistry and texture.

Data from:
  MB113
  Table 0
  Line 0:
State/Prov/County:Tindouf
Place of purchase:Algeria
Date:P 2023
Latitude:28.642936°N
Longitude:8.199231°W
Mass (g):531
Pieces:Several
Class:Angrite
Shock stage:U-S1
Weathering grade:Moderate
Fayalite (mol%):39.0±0.4
Ferrosilite (mol%):10.7±0.6
Wollastonite (mol%):52.9±0.6
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Mohamed Ali Loud
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. 113, in preparation (2024)
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Photos:
CreditPhotos
Public domain photographs:
Knut Metzler      
Geography:

Algeria
Coordinates:
     Recommended::   (28° 38' 35"N, 8° 11' 57"W)

Statistics:
     This is 1 of 61 approved meteorites from Tindouf, Algeria (plus 1 impact crater)
     This is 1 of 1364 approved meteorites from Algeria (plus 31 unapproved names) (plus 4 impact craters)
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