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Francesco Moser

Northwest Africa 17755 (NWA 17755)

(Northwest Africa)

Purchased: 2024 Jan

Classification: Carbonaceous chondrite (CV3)

History: Mitchell Wright purchased multiple stones from Ahmad Aide. Place and date of find, unknown.

Petrography: (C. Herd and W. Bannerman, UAb) Optical and microprobe examination of a polished thin section shows PO and POP chondrules, CAIs and AOAs (~5-10 vol%) in a clastic matrix that comprises ~40 vol% of the sample. Average chondrule size 0.8±0.5 mm (n=42). Metal is present within chondrules, whereas the matrix has been extensively oxidized.

Geochemistry: (C. Herd, W. Bannerman, and A. Locock, UAb) Data obtained by EMP examination of carbon-coated thin section: no matrix olivine (too altered); chondrule olivine: Fa4.3±6.0 (range 0-31; n=27); chondrule opx: Fs0.7±0.1En97.4±2.1Wo1.9±2.0 (Fs range 0.6-0.8; n=2); chondrule cpx: Fs0.8±0.1En58.2±7.3Wo41±7.4 (n=6).

Classification: CV3 chondrite

I am a member of the Meteoritical Society (#7743) and have been collecting meteorites for over 15 years.



Northwest Africa - Sahara Desert

NWA 17755 - Carbonaceous chondrite (CV3) - 50 g

Minerals & Meteorites

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Period

Paleogene, Eocene (56 - 33.9 million years)

1970-1980

Cretaceous, Lower (145 - 100.5 million years)

1990-2000

Neogene, Miocene (23.03 - 5.33 million years)

2020+

Paleogene (66 - 23.03 million years)

1650-1700

2024

2026

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GEM-TECH Istituto Gemmologico

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NWA 17755 - Carbonaceous chondrite (CV3) - 50 g

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