Great quality. Thank you for the good care! kind regards. David van Ooijen
Visualizza traduzioneMeteorite Winonaite NWA 13790. Ferro alto. - 29.13 g
N. 88482645
Northwest Africa 13790 (NWA 13790)
Purchased: 2020 Nov
Classification: Primitive achondrite (Winonaite)
Physical characteristics: Some fragments have fusion crust. The main mass is 131.4 g.
Petrography: (K. Metzler, IfP) Coarse-grained mafic rock, consisting of olivine (~45 vol%), low-Ca pyroxene (~10 vol%), Ca-rich pyroxene (~20 vol%), plagioclase (~10 vol%), Fe-Ni metal (~15 vol%), and small amounts of troilite. Olivine grains with reverse chemical zoning (Mg-rich reduction rims) occur. Metal occurs as isolated grains and as veins up to several cm in length. The rock shows a metamorphic texture with frequent 120° triple junctions at crystal boundaries and partly poikilitic intergrowths. Typical grain sizes vary between 100 and 500 µm. However, cm-sized areas of olivine and pyroxene, respectively, show identical optical orientation.
Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa3.4±0.6 (Fa2.0-4.1; n=15); Fe/Mn (at.): 15.8. The mean low-Ca pyroxene composition is Fs4.4±0.3Wo1.9±0.2 (Fs3.9-5.0Wo1.6-2.2; n=15); Fe/Mn (at.): 12.6. The mean composition of Ca-rich pyroxene is Fs1.3±0.3Wo43.8±0.6 (Fs0.9-2.2Wo42.9-45.1; n=15); Fe/Mn (at.): 10.7. The mean feldspar composition is An20.9±0.7Or3.0±0.5 (An19.9-22.1Or2.1-3.8; n=10).
Classification: Winonaite, based on the mineral chemistry and the high abundance and shape of Fe-Ni metal.
Shock stage: M-S1
Weathering grade: Low
Classifier: K. Metzler, IfP.
This lot comes with certificate of authenticity.
Thanks for your interest.
Northwest Africa 13790 (NWA 13790)
Purchased: 2020 Nov
Classification: Primitive achondrite (Winonaite)
Physical characteristics: Some fragments have fusion crust. The main mass is 131.4 g.
Petrography: (K. Metzler, IfP) Coarse-grained mafic rock, consisting of olivine (~45 vol%), low-Ca pyroxene (~10 vol%), Ca-rich pyroxene (~20 vol%), plagioclase (~10 vol%), Fe-Ni metal (~15 vol%), and small amounts of troilite. Olivine grains with reverse chemical zoning (Mg-rich reduction rims) occur. Metal occurs as isolated grains and as veins up to several cm in length. The rock shows a metamorphic texture with frequent 120° triple junctions at crystal boundaries and partly poikilitic intergrowths. Typical grain sizes vary between 100 and 500 µm. However, cm-sized areas of olivine and pyroxene, respectively, show identical optical orientation.
Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa3.4±0.6 (Fa2.0-4.1; n=15); Fe/Mn (at.): 15.8. The mean low-Ca pyroxene composition is Fs4.4±0.3Wo1.9±0.2 (Fs3.9-5.0Wo1.6-2.2; n=15); Fe/Mn (at.): 12.6. The mean composition of Ca-rich pyroxene is Fs1.3±0.3Wo43.8±0.6 (Fs0.9-2.2Wo42.9-45.1; n=15); Fe/Mn (at.): 10.7. The mean feldspar composition is An20.9±0.7Or3.0±0.5 (An19.9-22.1Or2.1-3.8; n=10).
Classification: Winonaite, based on the mineral chemistry and the high abundance and shape of Fe-Ni metal.
Shock stage: M-S1
Weathering grade: Low
Classifier: K. Metzler, IfP.
This lot comes with certificate of authenticity.
Thanks for your interest.
Minerale principale/ Nome meteorite
Meteorite Winonaite NWA 13790.
Forma minerale/Tipi di meteorite
Ferro alto.
Supplemento
Non prenotare il prezzo.
Peso
29,13 g
Paese d’origine
N.W.A.
388 recensioni (207 negli ultimi 12 mesi)
- 205
- 2
- 0
Fast delivery, very well packaged. Quality of product as promised. Very satisfied with purchase.
Visualizza traduzioneEnvoi très rapide, vendeur très professionnel. Je recommande vivement!
Visualizza traduzioneAll perfect. 100% professionnal.
Visualizza traduzionePerfectly package, the meteorites are beautiful and very clean , all good thank you
Visualizza traduzioneExcelente!!
Visualizza traduzioneNice object and it was very well packed
Visualizza traduzioneEverything arrived very good item as described thank you.
Visualizza traduzioneAll as described.
Visualizza traduzioneJe recommande, merci 👌🏻
Visualizza traduzioneExcelent very good very recommened++++ Muy recomendado+++
Visualizza traduzioneVery happy with this very nice specimen!
Visualizza traduzionegreat seller
Visualizza traduzioneEverything went smoothly, extremly fast shipping
Visualizza traduzioneAnother great piece arrived, quick posting, very good deal, happy with it! Have done several purchases and never any complaints! Recommended seller!
Visualizza traduzioneJe suis très satisfait du produit et à la vitesse qu'il m'a été livré. L'emballage était impeccable et le certificat d'authenticité était bien présent.
Visualizza traduzioneSehr schöne Stücke, schnelle und sichere Lieferung top seller.
Visualizza traduzioneNice moon meteorite to add to the collection, at a really good price! Have bought several meteorites before from this person, never dissapointed...! ;)
Visualizza traduzioneparfait très bien emballé correspond à la description livraison rapide vendeur serieux
Visualizza traduzione4th time I bought from this person, a total of 6 meteorites. Has been a good experience, nice specimens at a good price. Maybe people hesitate as for the name (user...) but they shouldn't! Good stuff!
Visualizza traduzioneThank you very much! A priceless object.
Visualizza traduzionefast and good delivery, I recommend 👍
Visualizza traduzioneEncore une fois, tout est conforme et l'emballage comme l'expédition sont soignés, Merci ! Steve.
Visualizza traduzioneTrès bien !
Visualizza traduzione388 recensioni (207 negli ultimi 12 mesi)
- 205
- 2
- 0
Great quality. Thank you for the good care! kind regards. David van Ooijen
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