Muy contento con el vendedor, envío rápido, embalaje perfecto y articulo idéntico al de las fotos. Repetiría sin dudarlo.
Ver traducciónUreilite meteorite, NWA 17031. With occurrence of considerable amounts of graphite. No reserve price. - 22.83 g - (1)
N.º 89683347
Northwest Africa 17031 (NWA 17031)
Purchased: 2024
Classification: Ureilite
History: Reportedly found in Algeria in January 2024 and bought later in Mauritania by Mohamed Ali Loud from Al Bouhali Mahmoud-Hamadat
Petrography: (K. Metzler, IfP) Coarse-grained ultramafic rock, consisting of olivine and pyroxene grains with sizes up to several mm. Reduction features in olivine, i. e., reverse zoning and occurrence of tiny Ni-free metals at the margins, along cracks, and within the grains. Graphite occurs along silicate grain boundaries.
Geochemistry: Mineral compositions and geochemistry: Mean mineral chemistry: Olivine cores: Fa20.7±0.2 (Fa20.4-21.1); Fe/Mn (at.): 50.3; CaO: 0.4 wt% (n=12). Low-Ca pyroxene: Fs17.1±0.2 Wo9.1±0.2 (Fs16.9-17.6 Wo8.7-9.4); n=13. The mean concentration of Cr2O3 (wt%) in olivine and pyroxene is 0.6 and 1.3, respectively.
Classification: Ureilite, based on modal composition, mineral chemistry, occurrence of considerable amounts of graphite, and typical reduction features in olivine.
Shock stage: U-S2
Weathering grade: moderate
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.
Northwest Africa 17031 (NWA 17031)
Purchased: 2024
Classification: Ureilite
History: Reportedly found in Algeria in January 2024 and bought later in Mauritania by Mohamed Ali Loud from Al Bouhali Mahmoud-Hamadat
Petrography: (K. Metzler, IfP) Coarse-grained ultramafic rock, consisting of olivine and pyroxene grains with sizes up to several mm. Reduction features in olivine, i. e., reverse zoning and occurrence of tiny Ni-free metals at the margins, along cracks, and within the grains. Graphite occurs along silicate grain boundaries.
Geochemistry: Mineral compositions and geochemistry: Mean mineral chemistry: Olivine cores: Fa20.7±0.2 (Fa20.4-21.1); Fe/Mn (at.): 50.3; CaO: 0.4 wt% (n=12). Low-Ca pyroxene: Fs17.1±0.2 Wo9.1±0.2 (Fs16.9-17.6 Wo8.7-9.4); n=13. The mean concentration of Cr2O3 (wt%) in olivine and pyroxene is 0.6 and 1.3, respectively.
Classification: Ureilite, based on modal composition, mineral chemistry, occurrence of considerable amounts of graphite, and typical reduction features in olivine.
Shock stage: U-S2
Weathering grade: moderate
Classifier: K. Metzler, IfP.
This lot has no reserve price and comes with its certificate of authenticity.
Thanks for your interest.
Número de artículos
1
Mineral principal / Nombre del meteorito
Ureilite meteorite, NWA 17031.
Forma mineral / Tipos de meteoritos
With occurrence of considerable amounts of graphite. No reserve price.
Peso
22,83 g
Origen (región / ciudad)
NWA
País de origen
NWA
402 valoraciones (201 en los últimos 12 meses)
- 198
- 3
- 0
All perfect.
Ver traducciónWonderful transaction, beautiful pieces, great seller!
Ver traducciónDziękuję za ekspresową dostawę
Ver traducciónThanks very muchfir zending the stone
Ver traducciónAlways very nice specimens, good price, good service!
Ver traducciónFast shipping , item as described thank you.
Ver traducciónDie Lieferung erfolgte zeitnah. Das angebotene Zertifikat für das Produkt fehlt! Somit ist das Produkt nicht vollständig.
Ver traducciónParfait. Merci.
Ver traducciónbien emballé bien reçu je suis satisfaite MERCI
Ver traducciónGreat quality. Thank you for the good care! kind regards. David van Ooijen
Ver traducciónFast delivery, very well packaged. Quality of product as promised. Very satisfied with purchase.
Ver traducciónEnvoi très rapide, vendeur très professionnel. Je recommande vivement!
Ver traducciónAll perfect. 100% professionnal.
Ver traducciónPerfectly package, the meteorites are beautiful and very clean , all good thank you
Ver traducciónExcelente!!
Ver traducciónNice object and it was very well packed
Ver traducciónEverything arrived very good item as described thank you.
Ver traducciónAll as described.
Ver traducciónJe recommande, merci 👌🏻
Ver traducciónExcelent very good very recommened++++ Muy recomendado+++
Ver traducciónVery happy with this very nice specimen!
Ver traduccióngreat seller
Ver traducciónEverything went smoothly, extremly fast shipping
Ver traducción402 valoraciones (201 en los últimos 12 meses)
- 198
- 3
- 0
Muy contento con el vendedor, envío rápido, embalaje perfecto y articulo idéntico al de las fotos. Repetiría sin dudarlo.
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