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24.08g H5 Chondrite Melt Breccia Meteorite Slice I NWA 12924 - TOP METEORITE For Sale
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24.08g H5 Chondrite Melt Breccia Meteorite Slice I NWA 12924 - TOP METEORITE:
$240.00
On Offer: 24.08 gram slice of the H5 Melt Breccia NWA 12924. Dimensions: 88.2mm x 51mm x 1.83mm Official Name: NWA 12924 Description: A 24.08g. amazing slice of NWA 12924 H5 melt breccia. This meteorite specimens display a very desirable metal distribution pattern, with large rounded partial-melt clasts packed with metal flecks and blebs. Some of the larger blebs display a beautiful symplectite-like amoeboid structure. The more fully melted matrix is nearly devoid of metal. Found: 2018 Location:Niger What you get: H5 melt breccia meteorite slice as shown with signed certificate of authenticity. We offer a 100% no questions asked 30 day return policy.
SEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW Northwest Africa 12924
Basic information
Name:Northwest Africa 12924
This is an OFFICIAL meteorite name.
Abbreviation:NWA 12924
Observed fall:No
Year found:2018
Country:Niger
Mass:5.7 Bulletin:(2020)H5-melt brecciaRecommended:H5-melt breccia
This is 1 of 29 approved meteorites classified as H5-melt breccia.Comments:
Approved 21 Nov 2019
Writeup
Writeup fromMB 108:
Northwest Africa 12924(NWA 12924) Niger Purchased: January 2018 Classification: Ordinary chondrite (H5, melt breccia) History: Mendy Ouzillou and Dustin Dickens purchased a single 5.7 kg stone directly from a dealer in Laayoune, Morocco in January 2018. Petrography: (C. Herd,UAb) Examination of a ~3 × 4.5 cm slice and a ~1 × 2 cm slice (later used to make the thin section) shows dark-gray rounded clasts containing metal and silicates with some microporosity, surrounded by lighter-gray microcrystalline domains which often have vein-like morphology relative to the clasts. Metal grains in the clasts are mostly <0.5 mm, but locally up to 8 mm in longest dimension. At thin section scale, the clasts consist of poorly delineated chondrules, metal and sulfides in a typical equilibrated ordinary chondrite texture. Microcrystalline domains are glassy in places, and contain fragments of the larger clasts; these are likely shock melt veins. Other shock effects include strong mosaicism in olivine. Geochemistry: (C. Herd and L. Tunney,UAb) Data obtained by EMP examination of carbon-coated thin section, grey clasts only: Olivine Fa18.8±0.4(n=8); Low-Ca Pyroxene Fs16.3±0.2, Wo1.3±0.2(n=5); Feldspar Or2.5Ab81(n=1). Classification: Ordinary chondrite, H5-melt breccia. Likely paired with Tassedet 004. Specimens: Type specimen of 20.1 g, including one thin section, atUAb. Mendy Ouzillou 2.85 kg, Dustin Dickens 2.85 kg.
Data from:
MB108
Table 0
Line 0:Place of purchase:LaayouneDate:P January 2018Mass (g):5700Pieces:1Class:H5-melt brecciaFayalite (mol%):18.8±0.4 (n=8)Ferrosilite (mol%):16.3±0.2 (n=5)Wollastonite (mol%):1.3±0.2 (n=5)Classifier:C. Herd and L. Tunney, UAbType spec mass (g):20.1Type spec location:UAbMain mass:Mendy Ouzillou, Dustin DickensComments:Field number MMO-2018-3E; submitted by C. Herd
Institutions
and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada;(institutional address; updated 17 Oct 2011)
24.08g H5 Chondrite Melt Breccia Meteorite Slice I NWA 12924 - TOP METEORITE $240.00
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