Acapulcoite meteorite (NWA 16397). Extremely rare meteorite. - 0.9 g

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Francesco Moser
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Seleccionado por Francesco Moser

Más de 20 años coleccionando meteoritos; excurador y restaurador de museo.

Estimación  € 120 - € 170
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Meteorito Acapulcoite (NWA 16397), meteorito acapulcoite extremadamente raro procedente del Sáhara Occidental, África del Norte Occidental, peso 0,90 g.

Resumen redactado con la ayuda de la IA

Descripción del vendedor

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.

Datos

Nombre del meteorito
Acapulcoite meteorite (NWA 16397).
Tipos de meteoritos
Extremely rare meteorite.
Suplemento
Do not reserve price.
Peso
0,9 g
Origen (región / ciudad)
Western Sahara
País de origen
NWA
Vendido por
EspañaVerificado
1706
Objetos vendidos
100%
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