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Jdiriya 004
Basic information Name: Jdiriya 004
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2020
Country: Western Sahara
Mass:help 142 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 63 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 28 Mar 2021
Writeuphelp
Writeup from MB 110:

Jdiriya 004        27°17.45417’N, 10°22.03850’W

Saquia el Hamra, Western Sahara

Purchased: 2020

Classification: Rumuruti chondrite (R3)

History: Nomads recovered the 142 g sample in the region between Jdirya and Afra Valley in Western Sahara. The sample was obtained by Zaid Oualguirah and subsequently sold to Jean Redelsperger in 2020.

Physical characteristics: Sample is partially coated in a dark brown flow-lined, regmaglypted fusion crust. The cut face shows the interior of the sample is dark brown in color and shows well-defined chondrules and sulfides.

Petrography: Description and classification (A. Love, App) Sample is a breccia composed of two different lithologies: A - clast composed of close-packed chondrules and fragments (avg. dia. 527 µm, n=41); B - host composed of dispersed (~20 vol%) chondrules (with an avg. dia 34 5µm, n=23) set within a recrystallized matrix (Fa39, n=6). Additional minerals: clinoenstatite, albitic plagioclase (from clast - 35.97 µm, n=11), pentlandite, troilite, chromite and apatite.

Geochemistry: Host: Olivine (Fa30.3±11.5, range Fa4.3-39.1, CV%=38, Cr2O3=0.1±0.1, NiO=0.1±0.1, Fe/Mn-80.4±11.9, n=17); low Ca pyroxene (Fs16.4±10.2Wo2.0±1.7, Fe/Mn=29.2±20.9, n=9), high Ca pyroxene (Fs13.9-19.7Wo44.2-30.4, Fe/Mn=14.6-61.4, n=2). Clast: Olivine (Fa36.2±1.4, Fe/Mn=75.9±2.8, n=12); low Ca pyroxene (Fs25.3±5.3Wo1.2±1.0, Fe/Mn=42.8±10.2, n=13).

Classification: Rumuruti chondrite (R3-4, C-S2, wi-3). Magnetic susceptibility, chondrule diameters, mineral chemistry and textures suggest this is an R3-4 breccia.

Specimens: Jean Redelsperger holds the main mass. A slice weighing 21.34 g and a polished thin section are on deposit at App.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Saquia el Hamra
Date:P 2020
Latitude:27°17.45417'N
Longitude:10°22.03850'W
Mass (g):142
Pieces:1
Class:R3
Shock stage:C-S2
Weathering grade:wi-3
Fayalite (mol%):30.3±11.5;36.2±1.4
Ferrosilite (mol%):16.4±10.2; 25.3±5.3
Wollastonite (mol%):2.0±1.7; 1.2±1.0
Magnetic suscept.:3.35
Classifier:A. Love, App
Type spec mass (g):21.34
Type spec location:App
Main mass:Jean Redelsperger
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:

Western Sahara
Coordinates:
     Recommended::   (27° 17' 27"N, 10° 22' 2"W)

Statistics:
     This is 1 of 105 approved meteorites from Saguia el Hamra, Western Sahara
     This is 1 of 261 approved meteorites from Western Sahara (plus 20 unapproved names)
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