ロドラナイト隕石。NWA 17904。 その隕石はアニーリング処理を施したブレックシャである。 - 10.75 g
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Lodranite meteorite NWA 17904, an annealed breccia, from Northwest Africa (NWA).
AI-assisted summary
Description from the seller
Northwest Africa 17904 (NWA 17904)
Mauritania
Classification: Primitive achondrite (Lodranite)
History: The meteorite was purchased by Mohamed Ali Loud in July 2025 from a dealer in Nouadhibou, Mauritania .
Physical characteristics: Many dark brownish rocks with some fusion crust.
Petrography: The meteorite is an annealed breccia predominantly composed of large of to 7 mm sized olivine and low Ca-pyroxene grains separated by fine-grained regions consisting of 30 to 500 µm sized olivine, low-Ca pyroxene, and diopside crystals often meeting in 120 degree triple junctions. Minor phases include whitlockite, Ti-free chromite, FeS, and partly altered FeNi-metal. No feldspar detected.
Geochemistry: olivine: Fa12.0±0.5 (Fa11.3-12.7, FeO/MnO=51±6, n=10); low-Ca pyroxene: Fs11.8±0.2Wo1.2±0.1 (Fs11.5-12.0Wo1.1-1.3, FeO/MnO=31±2, n=10); Ca-pyroxene: Fs4.1±0.2Wo47.6±0.4 (Fs3.8-4.6Wo47.1-48.2, FeO/MnO=27±6, n=10)
Shock stage: low
Weathering grade: moderate
Classifier: A. Greshake, MNB
This lot comes with certificate ofauthenticity, thanks for your interest.
Northwest Africa 17904 (NWA 17904)
Mauritania
Classification: Primitive achondrite (Lodranite)
History: The meteorite was purchased by Mohamed Ali Loud in July 2025 from a dealer in Nouadhibou, Mauritania .
Physical characteristics: Many dark brownish rocks with some fusion crust.
Petrography: The meteorite is an annealed breccia predominantly composed of large of to 7 mm sized olivine and low Ca-pyroxene grains separated by fine-grained regions consisting of 30 to 500 µm sized olivine, low-Ca pyroxene, and diopside crystals often meeting in 120 degree triple junctions. Minor phases include whitlockite, Ti-free chromite, FeS, and partly altered FeNi-metal. No feldspar detected.
Geochemistry: olivine: Fa12.0±0.5 (Fa11.3-12.7, FeO/MnO=51±6, n=10); low-Ca pyroxene: Fs11.8±0.2Wo1.2±0.1 (Fs11.5-12.0Wo1.1-1.3, FeO/MnO=31±2, n=10); Ca-pyroxene: Fs4.1±0.2Wo47.6±0.4 (Fs3.8-4.6Wo47.1-48.2, FeO/MnO=27±6, n=10)
Shock stage: low
Weathering grade: moderate
Classifier: A. Greshake, MNB
This lot comes with certificate ofauthenticity, thanks for your interest.
Details
隕石の名前
Lodranite Meteorite. NWA 17904.
隕石の種類
The meteorite is an annealed breccia.
付録
Do not reserve price.
重量
10.75 g
産地 (地域/都市)
NWA
原産国
NWA
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