Acapulcoite meteorite (NWA 16397). Extremely rare meteorite. - 0.51 g
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Acapulcoite meteorite (NWA 16397), an extremely rare primitive achondrite, originates from Western Sahara, Northwest Africa, and weighs 0.51 g.
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Description from the seller
Northwest Africa 16397 (NWA 16397)
Purchased: October 2022
Classification: Primitive achondrite (Acapulcoite)
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: October 2022
Classification: Primitive achondrite (Acapulcoite)
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.
Details
Name of meteorite
Acapulcoite meteorite (NWA 16397).
Type of meteorite
Extremely rare meteorite.
Supplement
Do not reserve price.
Weight
0.51 g
Origin (Region/ City)
Western Sahara
Country of Origin
NWA
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