火星陨石(舍尔戈石,橄榄石含量丰富) NEA 053. - 1.05 g - (1)





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火星陨石(Shergottite,含橄榄石)NEA 053,来自利比亚(东北非),重量1.05 g,附有真实性认证。
卖家的描述
Northeast Africa 053 (NEA 053).
Purchased: 2023
Classification: Martian meteorite (Shergottite)
History: 据称此石在利比亚发现。
Petrography: (K. Metzler, IfP) 火成岩,主要由延长的辉石晶粒(低钙-辉石和高钙辉石),最大至3 mm,以及等轴自生橄榄石晶粒,最大至2.5 mm,之间以片状晶格状斜方辉石和辉石晶粒的间质混合物相连。橄榄石和辉石晶体表现出熔体化学分区。对薄片图片的点计数显示体积比为:橄榄石33%,辉石40%,斜方辉石27%。后者已完全转变为Maskelynite(隐晶质)。附随物为SiO2多晶型、赤铁矿(Ilmenite)和钛磁铁矿(Titanomagnetite)。
Geochemistry: Mineral compositions and geochemistry: Mean mineral compositions: Olivine Fa46.0±12.9 (Fa28.5-62.9); Fe/Mn (at.): 52.9; n=11. Low-Ca pyroxene Fs31.4±9.5 Wo7.2±2.8 (Fs25.4-47.6Wo4.7-12.6); Fe/Mn (at.): 29.9; n=12. Ca-rich pyroxene Fs23.0±1.4Wo30.5±3.7 (Fs21.5-25.9Wo26.0-37.2); Fe/Mn (at.): 32.4; n=14. Plagioclase (maskelynite) An46.3±2.3Or2.4±0.5 (An43.0-49.8Or1.7-3.1); n=12. Fusion crust composition (wt%): Na2O: 1.3; MgO: 14.5; Al2O3: 6.2; SiO2:48.1; P2O5: 0.8; K2O: 0.1; CaO: 7.4; TiO2: 0.8; Cr2O3: 0.4; MnO: 0.5; FeO: 19.7
Classification: Martian (Shergottite, olivine-bearing), based on texture and mineral chemistry.
Shock stage: M-S4
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.
Northeast Africa 053 (NEA 053).
Purchased: 2023
Classification: Martian meteorite (Shergottite)
History: 据称此石在利比亚发现。
Petrography: (K. Metzler, IfP) 火成岩,主要由延长的辉石晶粒(低钙-辉石和高钙辉石),最大至3 mm,以及等轴自生橄榄石晶粒,最大至2.5 mm,之间以片状晶格状斜方辉石和辉石晶粒的间质混合物相连。橄榄石和辉石晶体表现出熔体化学分区。对薄片图片的点计数显示体积比为:橄榄石33%,辉石40%,斜方辉石27%。后者已完全转变为Maskelynite(隐晶质)。附随物为SiO2多晶型、赤铁矿(Ilmenite)和钛磁铁矿(Titanomagnetite)。
Geochemistry: Mineral compositions and geochemistry: Mean mineral compositions: Olivine Fa46.0±12.9 (Fa28.5-62.9); Fe/Mn (at.): 52.9; n=11. Low-Ca pyroxene Fs31.4±9.5 Wo7.2±2.8 (Fs25.4-47.6Wo4.7-12.6); Fe/Mn (at.): 29.9; n=12. Ca-rich pyroxene Fs23.0±1.4Wo30.5±3.7 (Fs21.5-25.9Wo26.0-37.2); Fe/Mn (at.): 32.4; n=14. Plagioclase (maskelynite) An46.3±2.3Or2.4±0.5 (An43.0-49.8Or1.7-3.1); n=12. Fusion crust composition (wt%): Na2O: 1.3; MgO: 14.5; Al2O3: 6.2; SiO2:48.1; P2O5: 0.8; K2O: 0.1; CaO: 7.4; TiO2: 0.8; Cr2O3: 0.4; MnO: 0.5; FeO: 19.7
Classification: Martian (Shergottite, olivine-bearing), based on texture and mineral chemistry.
Shock stage: M-S4
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.

