这是仅有的 8 颗陨石中的 1 颗,被认定为无球粒陨石-原始-未分组。 西北地区 15061 - 21.01 g - (1)
编号 84184433
碳质陨石 CR2,NWA 15524。 不保留价格。 - 7.42 g - (1)
编号 84184433
碳质陨石 CR2,NWA 15524。 不保留价格。 - 7.42 g - (1)
Northwest Africa 15524 (NWA 15524)
(Northwest Africa)
Purchased: 2022 Oct
Classification: Carbonaceous chondrite (CR2)
History: Reportedly found in 2021 in the area of In Salah, Algeria.
Petrography: (K. Metzler, IfP) Unequilibrated chondrite, consisting of metal-bearing chondrules, chondrule fragments, and few CAIs, embedded in a fine-grained brownish matrix (~40 vol% matrix). The chondrule population is dominated by porphyritic type I chondrules, some of which contain Ca-rich plagioclase. A few type II chondrules were observed. Many type I chondrules are (multi-)layered, showing igneous rims and layers of metal beads. Apparent chondrule sizes are mostly between 400 and 1000 µm; a few chondrules with sizes up to 3 mm are present. The interchondrule matrix contains clusters of magnetite (platelets and framboids), indicative of aqueous alteration processes.
Classification: CR2 chondrite based on chondrule size and texture, mineral chemistry, and occurrence of magnetite clusters in the interchondrule matrix.
Shock stage: C-S2
Weathering grade: W2
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.