漂亮的火星 Shergottite 結殼輝長岩紋理西北地區16050 - 15 g

由Francesco Moser精選

Northwest Africa 16050 (NWA 16050) (Northwest Africa) Purchased: 2023 May Classification: Martian meteorite (Shergottite) Physical characteristics: Four brownish fragments mostly covered with fusion crust. Petrography: The meteorite shows a gabbroic texture and is predominantly composed of up to 1.5 mm sized prismatic, irregularly zoned pyroxene, angular, partly euhedral olivine often containing magmatic inclusions, and interstitial maskelynite. Minor phases include chromite, ilmenite, and FeS. The meteorite is highly shocked and contains shock melt veins and pockets. Geochemistry: olivine: Fa39.7±0.4 (Fa39.1-40.2, FeO/MnO=51±1, n=7); zoned pyroxene: Fs27.9±2.9Wo9.3±2.8 (Fs23.5-34.2Wo3.3-13.0, FeO/MnO=31±2, n=12); maskelynite (An57.6-60.0Ab38.9-41.2Or1.0-1.4, n=7)

編號 83174149

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漂亮的火星 Shergottite 結殼輝長岩紋理西北地區16050 - 15 g

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Northwest Africa 16050 (NWA 16050)

(Northwest Africa)

Purchased: 2023 May

Classification: Martian meteorite (Shergottite)

Physical characteristics: Four brownish fragments mostly covered with fusion crust.

Petrography: The meteorite shows a gabbroic texture and is predominantly composed of up to 1.5 mm sized prismatic, irregularly zoned pyroxene, angular, partly euhedral olivine often containing magmatic inclusions, and interstitial maskelynite. Minor phases include chromite, ilmenite, and FeS. The meteorite is highly shocked and contains shock melt veins and pockets.

Geochemistry: olivine: Fa39.7±0.4 (Fa39.1-40.2, FeO/MnO=51±1, n=7); zoned pyroxene: Fs27.9±2.9Wo9.3±2.8 (Fs23.5-34.2Wo3.3-13.0, FeO/MnO=31±2, n=12); maskelynite (An57.6-60.0Ab38.9-41.2Or1.0-1.4, n=7)