This came from Mark Lyon at the Denver mineral show in September of 2022

Name: Erg Chech 003 
Abbreviation: EC 003
Observed fall: No
Year found: 2021
Country: Algeria
Mass:  1100 g
Meteoritical Bulletin, (2022): CR2
Recommended: CR2 

This is 1 of 204 approved meteorites classified as CR2.  
Approved 17 Oct 2021

Erg Chech 003 (EC 003)        26°01.92’N, 1°36.66’W

Adrar, Algeria    Find: 2021

Classification: Carbonaceous chondrite (CR2)

History: Found in 2021 by Ali Mustapha near the town of In Zghmir. Later purchased in 2021 by Shun-Chung Yang.

Physical characteristics: Sample contains visible fusion crust. A slice taken of the sample reveals an assortment of chondrules and metal grains.

Petrography: (D. Sheikh, Cascadia) This sample is composed of chondrules (Primarily porphyritic Type I, Av. 1.3 mm, up to 2.5 mm, ~70 vol. %) set within a fine-grained, hydrous matrix (~30 vol. %). Metal occurs either as blobs within chondrules or as rims around chondrules.

Geochemistry: Type I Olivine (Fa1.7±0.4, range Fa1.0-2.3, n=21), Type II Olivine (Fa38.2, n=1), Low-Ca Pyroxene (Fs3.0±1.4Wo0.8±0.2, range Fs1.3-6.8Wo0.5-1.3, n=11). Average EPMA analytical totals in the matrix 81.9 wt. % (n=10).

Classification: Carbonaceous chondrite (CR2) based on texture, mineral compositions and low matrix analytical totals.

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