Muy contento con el vendedor, envío rápido, embalaje perfecto y articulo idéntico al de las fotos. Repetiría sin dudarlo.
Se oversettelseUreilitt-meteoritt, NWA 17031. Med forekomst av betydelige mengder grafitt. Ikke reserver pris. - 22.83 g - (1)
Nr. 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.
- 198
- 3
- 0
All perfect.
Se oversettelseWonderful transaction, beautiful pieces, great seller!
Se oversettelseDziękuję za ekspresową dostawę
Se oversettelseThanks very muchfir zending the stone
Se oversettelseAlways very nice specimens, good price, good service!
Se oversettelseFast shipping , item as described thank you.
Se oversettelseDie Lieferung erfolgte zeitnah. Das angebotene Zertifikat für das Produkt fehlt! Somit ist das Produkt nicht vollständig.
Se oversettelseParfait. Merci.
Se oversettelsebien emballé bien reçu je suis satisfaite MERCI
Se oversettelseGreat quality. Thank you for the good care! kind regards. David van Ooijen
Se oversettelseFast delivery, very well packaged. Quality of product as promised. Very satisfied with purchase.
Se oversettelseEnvoi très rapide, vendeur très professionnel. Je recommande vivement!
Se oversettelseAll perfect. 100% professionnal.
Se oversettelsePerfectly package, the meteorites are beautiful and very clean , all good thank you
Se oversettelseExcelente!!
Se oversettelseNice object and it was very well packed
Se oversettelseEverything arrived very good item as described thank you.
Se oversettelseAll as described.
Se oversettelseJe recommande, merci 👌🏻
Se oversettelseExcelent very good very recommened++++ Muy recomendado+++
Se oversettelseVery happy with this very nice specimen!
Se oversettelsegreat seller
Se oversettelseEverything went smoothly, extremly fast shipping
Se oversettelse- 198
- 3
- 0
Muy contento con el vendedor, envío rápido, embalaje perfecto y articulo idéntico al de las fotos. Repetiría sin dudarlo.
Se oversettelse