碳质 CM2 型陨石，NWA 15523。 无保留价。 - 1.31 g
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NWA 15523 碳质球粒陨石，CM2 型，来自西北非地区的 Northwest Africa (NWA)，重量 1.31 g，据称在阿尔及利亚哈西·基比发现。
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卖家的描述
Northwest Africa 15523 (NWA 15523)
Purchased: 2022 May
Classification: Carbonaceous chondrite (CM2)
History: Reportedly found in early 2022 in Hassi Khebi, Algeria.
Petrography: (K. Metzler, IfP) Chondrules, chondrule fragments, CAIs, and PCP(TCI) particles are embedded in a fine-grained black matrix (about 50 vol% matrix). The vast majority of chondrules belong to the chemical type I. Chondrule sizes are mostly between 50 and 300 µm; a few chondrules with sizes up to 1.5 mm are present. Many chondrules are mantled by fine-grained dust. Accessories are troilite, pentlandite, and calcite.
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:\tC-S2
Weathering grade:\tModerate
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: Reportedly found in early 2022 in Hassi Khebi, Algeria.
Petrography: (K. Metzler, IfP) Chondrules, chondrule fragments, CAIs, and PCP(TCI) particles are embedded in a fine-grained black matrix (about 50 vol% matrix). The vast majority of chondrules belong to the chemical type I. Chondrule sizes are mostly between 50 and 300 µm; a few chondrules with sizes up to 1.5 mm are present. Many chondrules are mantled by fine-grained dust. Accessories are troilite, pentlandite, and calcite.
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:\tC-S2
Weathering grade:\tModerate
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.
详细资料
陨石名称
Meteorite Carbonaceous CM2, NWA 15523.
陨石类型
Do not reserve price.
重量
1,31 g
国家
NWA
