碳质 CM2 型陨石,NWA 15523。 没有保留价。 - 3.22 g





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碳质CM2陨石,NWA 15523,来自西北非区(NWA),起源于阿尔及利亚哈西·赫比,重量3.22 g。
卖家的描述
Northwest Africa 15523 (NWA 15523)
Purchased: 2022 May
Classification: Carbonaceous chondrite (CM2)
History: 据报道于2022年初在阿尔及利亚哈西基比(Hassi Khebi)发现。
Petrography: (K. Metzler, IfP) 角闪石、角粒碎片、CAIs(钙铝包体),以及 PCP(TCI) 粒子嵌入在细粒黑质基质中(基质约占50体积%)。绝大多数角粒属于化学类型I。角粒大小大多在50至300 μm之间;也有少量角粒尺寸可达1.5 mm。许多角粒被细粒尘埃包覆。配件包括三铁镁铁矿、方镁石和方解石。
Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa7.2±12.1 (Fa0.3-40.7); n=13. Mean composition of low-Ca pyroxene: Fs1.4±0.7 Wo2.4±1.8 (Fs0.7-2.7 Wo0.9-5.7; n=10)
Classification: CM2 chondrite based on the occurrence of CAIs and PCP (TCI) particles, small chondrule size, chondrule-matrix ratio, and mineral chemistry.
Shock stage: C-S2
Weathering grade: Moderate
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.
Northwest Africa 15523 (NWA 15523)
Purchased: 2022 May
Classification: Carbonaceous chondrite (CM2)
History: 据报道于2022年初在阿尔及利亚哈西基比(Hassi Khebi)发现。
Petrography: (K. Metzler, IfP) 角闪石、角粒碎片、CAIs(钙铝包体),以及 PCP(TCI) 粒子嵌入在细粒黑质基质中(基质约占50体积%)。绝大多数角粒属于化学类型I。角粒大小大多在50至300 μm之间;也有少量角粒尺寸可达1.5 mm。许多角粒被细粒尘埃包覆。配件包括三铁镁铁矿、方镁石和方解石。
Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa7.2±12.1 (Fa0.3-40.7); n=13. Mean composition of low-Ca pyroxene: Fs1.4±0.7 Wo2.4±1.8 (Fs0.7-2.7 Wo0.9-5.7; n=10)
Classification: CM2 chondrite based on the occurrence of CAIs and PCP (TCI) particles, small chondrule size, chondrule-matrix ratio, and mineral chemistry.
Shock stage: C-S2
Weathering grade: Moderate
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.

