洛德拉陨石。NWA 17904。 这块陨石是一块经退火的角砾岩。 - 23.57 g





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Lodranite NWA 17904 陨石是一块来自西北非区域(NWA)的退火碎屑状陨石,主要矿物为橄榄石。
卖家的描述
西北非洲 17904 (NWA 17904)
毛里塔尼亚
分类:原始熔融陨石(Lodranite)
History: The meteorite was purchased by Mohamed Ali Loud in July 2025 from a dealer in Nouadhibou, Mauritania .
物理特征:多块深褐色岩石,带有一些融壳。
岩石学: 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.
该陨石为退火碎裂岩,主要由大小不等、最大约7毫米的橄榄石和低钙辉石颗粒组成,这些大颗粒之间夹有由橄榄石、低钙辉石和透辉石晶体组成的细晶区,晶体尺寸约30至500微米,且常在120度的三相点相交。微相包括 Whitlockite、无钛铬铁矿、FeS,以及部分氧化的 FeNi 金属。未检测到长石。
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)
地球化学:橄榄石:Fa12.0±0.5(Fa11.3-12.7,FeO/MnO=51±6,n=10);低钙辉石:Fs11.8±0.2 Wo1.2±0.1(Fs11.5-12.0 Wo1.1-1.3,FeO/MnO=31±2,n=10);Ca辉石:Fs4.1±0.2 Wo47.6±0.4(Fs3.8-4.6 Wo47.1-48.2,FeO/MnO=27±6,n=10)
Shock stage: low
Weathering grade: moderate
Classifier: A. Greshake, MNB
冲击阶段:低
风化等级:中等
鉴定者:A. Greshake,MNB
This lot comes with certificate of authenticity, thanks for your interest.
本批次附有真实性证书,感谢您的关注。
西北非洲 17904 (NWA 17904)
毛里塔尼亚
分类:原始熔融陨石(Lodranite)
History: The meteorite was purchased by Mohamed Ali Loud in July 2025 from a dealer in Nouadhibou, Mauritania .
物理特征:多块深褐色岩石,带有一些融壳。
岩石学: 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.
该陨石为退火碎裂岩,主要由大小不等、最大约7毫米的橄榄石和低钙辉石颗粒组成,这些大颗粒之间夹有由橄榄石、低钙辉石和透辉石晶体组成的细晶区,晶体尺寸约30至500微米,且常在120度的三相点相交。微相包括 Whitlockite、无钛铬铁矿、FeS,以及部分氧化的 FeNi 金属。未检测到长石。
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)
地球化学:橄榄石:Fa12.0±0.5(Fa11.3-12.7,FeO/MnO=51±6,n=10);低钙辉石:Fs11.8±0.2 Wo1.2±0.1(Fs11.5-12.0 Wo1.1-1.3,FeO/MnO=31±2,n=10);Ca辉石:Fs4.1±0.2 Wo47.6±0.4(Fs3.8-4.6 Wo47.1-48.2,FeO/MnO=27±6,n=10)
Shock stage: low
Weathering grade: moderate
Classifier: A. Greshake, MNB
冲击阶段:低
风化等级:中等
鉴定者:A. Greshake,MNB
This lot comes with certificate of authenticity, thanks for your interest.
本批次附有真实性证书,感谢您的关注。

