独一无二的狄奥杰尼特Erg Chech 010切片具有粗粒的前晶粒状结构 - 1.21 g - (1)

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由Francesco Moser精选

Northwest Africa 15627 (NWA 15627) (Northwest Africa) Purchased: July, 2022 Classification: HED achondrite (Diogenite) History: The meteorite was purchased from a meteorite dealer in Temara, Morocco. Physical characteristics: Three light brownish fragments lacking fusion crust. Petrography: Coarse-grained protogranular aggregate predominantly composed of up to 4 mm sized orthopyroxene and subordinate plagioclase grains . Minor phases include silica, troilite, chromite and FeNi metal. Cavities are sometimes filled with secondary calcite. Geochemistry: low-Ca pyroxene: Fs27.7±0.2Wo3.8±0.3 (Fs27.4-28.0Wo3.1-4.1, FeO/MnO=26-28, n=10); calcic plagioclase: An93.0±1.6 (An88.9-95.8, n=10)

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独一无二的狄奥杰尼特Erg Chech 010切片具有粗粒的前晶粒状结构 - 1.21 g - (1)

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Northwest Africa 15627 (NWA 15627)

(Northwest Africa)

Purchased: July, 2022

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased from a meteorite dealer in Temara, Morocco.

Physical characteristics: Three light brownish fragments lacking fusion crust.

Petrography: Coarse-grained protogranular aggregate predominantly composed of up to 4 mm sized orthopyroxene and subordinate plagioclase grains . Minor phases include silica, troilite, chromite and FeNi metal. Cavities are sometimes filled with secondary calcite.

Geochemistry: low-Ca pyroxene: Fs27.7±0.2Wo3.8±0.3 (Fs27.4-28.0Wo3.1-4.1, FeO/MnO=26-28, n=10); calcic plagioclase: An93.0±1.6 (An88.9-95.8, n=10)