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地點:非洲西北部,具體位置不明。
 發現:2008。
 類型:Diogenite橄欖石

A fresh, dense, heterogeneous rock. It consists of 57 vol.% olivine (Fa30.2, FeO/MnO = 46.6) and 42 vol.% orthopyroxene (Fs24.8Wo1.8, FeO/MnO = 25.6) with minor chromite [Cr/(Cr+Al) = 0.828, TiO2 = 0.71 wt.%], troilite and Ni-free metal; Plagioclase is absent; Olivine occurs as brown polygranular clusters and as tiny rounded grains within larger yellow-green oikocrysts of orthopyroxene; most chromite is very fine grained but sporadic, larger grains are up to 1.5 cm across. At hand specimen scales, olivine is seen to be distributed in schlieren-like bands, possibly consistent with magmatic or plastic flow within a stress field. We suggest that NWA 5480 may be a sample of the Vestan mantle, representing a partial melting residue that has experienced recrystallization and plastic deformation at relatively high temperatures and pressures.

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品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA54800.27
價格 :NTD 1620
    RMB: 331


品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA54800.28
已售出


品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA54800.32
價格 :NTD 1920
    RMB: 392


品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA54800.33
價格 :NTD 1980
    RMB: 404


品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA54800.75
價格 :NTD 4500
    RMB: 918


品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA54802.76
價格 :NTD 8280
    RMB: 1,690


品名 :NWA 5480 橄榄石紫蘇辉石无球粒陨石
編號 :NWA5480F
已售出

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