隕石 CVox3 NWA 4502 的最終鏡頭 碳質球粒隕石 - 4.7 g - (1)
編號 92884563
Northwest Africa 15813 (NWA 15813)
(Northwest Africa)
Purchased: February, 2023
Classification: Carbonaceous chondrite (CV3)
History: The meteorite was purchased from a meteorite dealer in Morocco.
Physical characteristics: Four black fragments partly covered with fusion crust.
Petrography: Carbonaceous chondrite composed of large up to 3 mm sized chondrules, up to 4 mm sized whitish CAIs, and olivine amoeboids all set into a fine-grained almost black matrix. Some chondrules show brownish staining due to terrestrial alteration. Opaque phases include magnetite, sulfides, and FeNi metal. Cracks are often filled with secondary calcite.
Geochemistry: Ni in sulfides 23.6±2.5 wt%, N=5
Classification: Carbonaceous chondrite (CVox3). Oxidized subgroup based on high concentrations of Ni in sulfides (Gattacceca et al., 2020)
Northwest Africa 15813 (NWA 15813)
(Northwest Africa)
Purchased: February, 2023
Classification: Carbonaceous chondrite (CV3)
History: The meteorite was purchased from a meteorite dealer in Morocco.
Physical characteristics: Four black fragments partly covered with fusion crust.
Petrography: Carbonaceous chondrite composed of large up to 3 mm sized chondrules, up to 4 mm sized whitish CAIs, and olivine amoeboids all set into a fine-grained almost black matrix. Some chondrules show brownish staining due to terrestrial alteration. Opaque phases include magnetite, sulfides, and FeNi metal. Cracks are often filled with secondary calcite.
Geochemistry: Ni in sulfides 23.6±2.5 wt%, N=5
Classification: Carbonaceous chondrite (CVox3). Oxidized subgroup based on high concentrations of Ni in sulfides (Gattacceca et al., 2020)
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