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149g Winonaite Primitive Achondrite Meteorite - TOP METEORITE For Sale
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149g Winonaite Primitive Achondrite Meteorite - TOP METEORITE:
$600.00
On Offer:149gramwinonaiteprimitive achondrite meteorite
Official name:NWA 13790
Class:Winonaite -primitiveachondriteOrigin:Northwest Africa
Year found:2020
Description:149gram Primitive AchondriteWinonaite Meteoritewith official name NWA 13790.The winonaite class has been connected to the IAB iron meteorite parent body, which seems to support the idea that these two very different meteorites come from different parts of the same partially differentiated asteroid that was broken up and reformed after a massive collision.The primitive achondrites as awhole are thought to represent a transitional phase between chondrites and achondrites.
What you get:149gWinonaite Meteorite NWA 13790 as shown, and signed Certificate of Authenticity.I offer a 100% no questions asked30 day return policy. SEE OFFICIAL METEORITICAL BULLETIN DATABASE ENTRY BELLOW
Northwest Africa 13790Basic informationName:Northwest Africa 13790
This is an OFFICIAL meteorite name.
Abbreviation:NWA 13790
Observed fall:No
Year found:2020
Country:(Northwest Africa)
Mass:838 is 1 of 85 approved meteorites (plus 1 unapproved name) classified as Winonaite.
Search for other:Primitive 28 Mar 2021WriteupWriteup fromMB 110:
Northwest Africa 13790(NWA 13790) (Northwest Africa) 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 n=15); Fe/Mn (at.): 12.6. The mean composition of Ca-rich pyroxene is n=15); Fe/Mn (at.): 10.7. The mean feldspar composition is n=10). Classification: Winonaite, based on the mineral chemistry and the high abundance and shape of Fe-Ni metal.Specimens: Main mass with Ben Hoefnagels. 180 g (14 pieces) with Mohamed Ali Loud. Data from:
MB110
Table 0
Line 0:Place of purchase:Nouadhibou, MauritaniaDate:P 2020 NovMass (g):838Pieces:27Class:WinonaiteShock stage:M-S1Weathering grade:LowFayalite (mol%):3.4±0.6Ferrosilite (mol%):4.4±0.3; 1.3±0.3Wollastonite (mol%):1.9±0.2; 43.8±0.6Classifier:K. Metzler, IfPType spec mass (g):20Type spec location:IfPMain mass:Ben HoefnagelsComments:Submitted by K. Metzler, IfP
149g Winonaite Primitive Achondrite Meteorite - TOP METEORITE $600.00
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