阿卡普洛伊特陨石（NWA 16397） 极其罕见的陨石。 - 0.26 g
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來自西撒哈拉的 Acapulcoite隕石（NWA 16397），西北非地區，為極為罕見的 Acapulcoite 隕石，重量為 0.26 g。
AI輔助摘要
賣家描述
Northwest Africa 16397 (NWA 16397)
Purchased: 2022 Oct
Classification: Primitive achondrite (Acapulcoite)
History: Reportedly this stone was found in Western Sahara
Petrography: (K. Metzler, IfP) Recrystallized rock with abundant 120° triple junctions, consisting of olivine, low-Ca pyroxene, Ca-rich pyroxene, plagioclase, and Fe-Ni metal. Accessory phases are troilite, Cr-spinel and merrillite. Silicate grain sizes are mostly between 100 and 200 µm.
Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa8.3±0.2 (Fa7.9-8.5); Fe/Mn (at.): 15.5; n=10. Mean low-Ca pyroxene composition: Fs8.4±0.2 Wo1.8±0.6 (Fs8.0-8.8 Wo0.8-2.6); Fe/Mn (at.): 10.7; n=11. Mean composition of Ca-rich pyroxene: Fs3.5±0.3 Wo44.0±0.7 (Fs3.1-4.3 Wo42.0-44.6); Fe/Mn (at.): 11.2; n=11. Mean feldspar composition: An14.2±1.2 Or2.4±0.4 (An12.4-15.8 Or1.7-3.0); n=11.
Classification: Acapulcoite, based on mineralogy, mineral chemistry and mean grain size of silicates.
Shock stage: M-S1
Weathering grade: Low
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.
Northwest Africa 16397 (NWA 16397)
Purchased: 2022 Oct
Classification: Primitive achondrite (Acapulcoite)
History: Reportedly this stone was found in Western Sahara
Petrography: (K. Metzler, IfP) Recrystallized rock with abundant 120° triple junctions, consisting of olivine, low-Ca pyroxene, Ca-rich pyroxene, plagioclase, and Fe-Ni metal. Accessory phases are troilite, Cr-spinel and merrillite. Silicate grain sizes are mostly between 100 and 200 µm.
Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa8.3±0.2 (Fa7.9-8.5); Fe/Mn (at.): 15.5; n=10. Mean low-Ca pyroxene composition: Fs8.4±0.2 Wo1.8±0.6 (Fs8.0-8.8 Wo0.8-2.6); Fe/Mn (at.): 10.7; n=11. Mean composition of Ca-rich pyroxene: Fs3.5±0.3 Wo44.0±0.7 (Fs3.1-4.3 Wo42.0-44.6); Fe/Mn (at.): 11.2; n=11. Mean feldspar composition: An14.2±1.2 Or2.4±0.4 (An12.4-15.8 Or1.7-3.0); n=11.
Classification: Acapulcoite, based on mineralogy, mineral chemistry and mean grain size of silicates.
Shock stage: M-S1
Weathering grade: Low
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.
詳細資料
隕石名稱
Acapulcoite meteorite (NWA 16397).
隕石種類
Extremely rare meteorite.
補給品
Do not reserve price.
重量
0,26 g
原產地（地區／城市）
Western Sahara
原產國
NWA
