アカプルコ石隕石(NWA 16397). 極めて珍しい隕石。 - 0.32 g

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Acapulcoite meteorite (NWA 16397), an extremely rare meteorite from Western Sahara in Northwest Africa, weighing 0.32 g.

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Description from the seller

ノースウェスト・アフリカ 16397(NWA 16397)

Purchased: 2022 Oct

Classification: Primitive achondrite (Acapulcoite)

History: おそらくこの石は西サハラで見つかったと報告されている

Petrography:(K. Metzler, IfP)再結晶化した岩で、豊富な120°三接合を含み、オリビン、低-Ca輝石、Ca-rich輝石、斜長石、Fe-Ni金属からなる。副相としてトロイル石、Cr-スピネル、メリリット。シリケート粒径は主に100–200 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.

ノースウェスト・アフリカ 16397(NWA 16397)

Purchased: 2022 Oct

Classification: Primitive achondrite (Acapulcoite)

History: おそらくこの石は西サハラで見つかったと報告されている

Petrography:(K. Metzler, IfP)再結晶化した岩で、豊富な120°三接合を含み、オリビン、低-Ca輝石、Ca-rich輝石、斜長石、Fe-Ni金属からなる。副相としてトロイル石、Cr-スピネル、メリリット。シリケート粒径は主に100–200 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.

Details

隕石の名前
Acapulcoite meteorite (NWA 16397).
隕石の種類
Extremely rare meteorite.
付録
Do not reserve price.
重量
0.32 g
産地 (地域/都市)
Western Sahara
原産国
NWA
スペインVerified
2047
Objects sold
100%
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