陨石。Diogenite - 异常的,(Djebel Chaab 004) 罕见且难以获得。这是仅有的13块被批准归类为 Diogenite-an 的陨石之一。 - 10.67 g - (1)





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隕石,異常性二歐頓石(Diogenite-an),源自阿爾及利亞阿德拉爾的 Djebel Chaab 004,重量 10.67 g,附有真實性證書。
賣家描述
Djebel Chaab 004 (Cha 004) 25.33805°N, 1.14363°E
Adrar, Algeria
Find: 2022 Dec 27
Classification: HED achondrite (Diogenite, anomalous)
History: 据报道,一群陨石猎人在2022年12月27日于阿尔及利亚的Djebel Chaab DCA发现了此物质的若干碎片。
Petrography (K. Metzler, IfP): 多岩质变克组合陨石角砾岩,由矿物碎片和少量岩质夹碎片(diogenitic与eucritic)嵌于细粒相关碎屑中。材料经历冲击致密化,存在薄的冲击脉。Diogenite成分>90体积%;这块角砾岩以橄榄石和低Ca辉石碎片为主,化学组成范围异常广。Eucrite成分以矿物碎片(渗出型辉石、斜长石、SiO2同晶型)及小型岩质夹碎片的形态存在。辅料为Cr-自旋晶和含Ni金属(3-4 wt% Ni)。
Geochemistry: Mineral compositions and geochemistry: Diogenitic clasts: Mean olivine composition: Fa15.9±5.8 (Fa8.7-28.4); Fe/Mn (at.): 44.8; n=18. Mean pyroxene composition: Fs23.5±5.9Wo2.3±1.1 (Fs11.9-31.2Wo0.4-3.9); Fe/Mn (at.): 28; n=15. Eucrite clasts: Mean composition of low-Ca pyroxene (host): Fs63.3±0.3Wo2.4±0.4 (Fs62.8-63.7Wo1.9-2.8); Fe/Mn (at.): 33; n=5. Mean composition of Ca-rich pyroxene (exsolution lamellae): Fs25.7±4.5Wo40.7±1.8 (Fs21.2-31.5Wo36.6-42.2); Fe/Mn (at.): 33; n=11. Mean plagioclase composition: An89.6±5.1Or0.4±0.5 (An78.3-95.1Or0.0-1.5); n=15.
Classification: Diogenite (polymict, anomalous). 该diogenite成分以橄榄石和辉石的化学变幅异常巨大为特征,使本岩石有别于其他多岩质diogenites。
Shock stage: high
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.
Djebel Chaab 004 (Cha 004) 25.33805°N, 1.14363°E
Adrar, Algeria
Find: 2022 Dec 27
Classification: HED achondrite (Diogenite, anomalous)
History: 据报道,一群陨石猎人在2022年12月27日于阿尔及利亚的Djebel Chaab DCA发现了此物质的若干碎片。
Petrography (K. Metzler, IfP): 多岩质变克组合陨石角砾岩,由矿物碎片和少量岩质夹碎片(diogenitic与eucritic)嵌于细粒相关碎屑中。材料经历冲击致密化,存在薄的冲击脉。Diogenite成分>90体积%;这块角砾岩以橄榄石和低Ca辉石碎片为主,化学组成范围异常广。Eucrite成分以矿物碎片(渗出型辉石、斜长石、SiO2同晶型)及小型岩质夹碎片的形态存在。辅料为Cr-自旋晶和含Ni金属(3-4 wt% Ni)。
Geochemistry: Mineral compositions and geochemistry: Diogenitic clasts: Mean olivine composition: Fa15.9±5.8 (Fa8.7-28.4); Fe/Mn (at.): 44.8; n=18. Mean pyroxene composition: Fs23.5±5.9Wo2.3±1.1 (Fs11.9-31.2Wo0.4-3.9); Fe/Mn (at.): 28; n=15. Eucrite clasts: Mean composition of low-Ca pyroxene (host): Fs63.3±0.3Wo2.4±0.4 (Fs62.8-63.7Wo1.9-2.8); Fe/Mn (at.): 33; n=5. Mean composition of Ca-rich pyroxene (exsolution lamellae): Fs25.7±4.5Wo40.7±1.8 (Fs21.2-31.5Wo36.6-42.2); Fe/Mn (at.): 33; n=11. Mean plagioclase composition: An89.6±5.1Or0.4±0.5 (An78.3-95.1Or0.0-1.5); n=15.
Classification: Diogenite (polymict, anomalous). 该diogenite成分以橄榄石和辉石的化学变幅异常巨大为特征,使本岩石有别于其他多岩质diogenites。
Shock stage: high
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.

