陨石。迪欧根岩—异常型,(Djebel Chaab 004). 罕见且难以获得。这是仅有的12块经批准归类为 Diogenite-an 的陨石之一。 - 5.37 g - (1)
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Diogenite 异常型陨石（Djebel Chaab 004），5.37 g，来自阿尔及利亚阿德拉尔地区，Diogenite-an 之一的经批准的 Diogenite-an 陨石。
AI辅助摘要
卖家的描述
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，一组陨石猎人在2022年12月27日于阿尔及利亚的 Djebel Chaab DCA 地区发现了几块此材料的碎片。
Petrography (K. Metzler, IfP): 多晶质流纹岩性陨石碎块，含矿物碎片和少量岩质碎屑（位偏 Diogenitic 与 eucritic），嵌入在细粒相关碎屑中。材料经历冲击致密化，存在薄层冲击脉。Diogenite 成分占比>90体积%。此脉岩以橄榄石和低-Ca辉石碎片为主，化学组成的变异范围异常广泛。Eucrite 成分以矿物碎片形态出现（解溶辉石、斜长石、SiO2 同晶型）及小岩质碎片。配件包含 Cr-尖晶石与含镍金属（Ni 含量3-4 wt%）。
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). The diogenite component is characterized by unusually large chemical variations of both olivine and pyroxene, which distinguishes this rock from other polymict 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，一组陨石猎人在2022年12月27日于阿尔及利亚的 Djebel Chaab DCA 地区发现了几块此材料的碎片。
Petrography (K. Metzler, IfP): 多晶质流纹岩性陨石碎块，含矿物碎片和少量岩质碎屑（位偏 Diogenitic 与 eucritic），嵌入在细粒相关碎屑中。材料经历冲击致密化，存在薄层冲击脉。Diogenite 成分占比>90体积%。此脉岩以橄榄石和低-Ca辉石碎片为主，化学组成的变异范围异常广泛。Eucrite 成分以矿物碎片形态出现（解溶辉石、斜长石、SiO2 同晶型）及小岩质碎片。配件包含 Cr-尖晶石与含镍金属（Ni 含量3-4 wt%）。
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). The diogenite component is characterized by unusually large chemical variations of both olivine and pyroxene, which distinguishes this rock from other polymict diogenites.
Shock stage: high
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.
详细资料
物品件数
1
陨石名称
Meteorite. Diogenite - Anomalous,(Djebel Chaab 004).
陨石类型
Rare and difficult to obtain. This is 1 of only 12 approved meteorites classified as Diogenite-an.
重量
5,37 g
原产地（地区/城市）
Adrar
国家
Algeria
