Description: Very RARE NEW Classification 1 of only 3 - NWA 15208 (L5-7) - 13.9 g meteorite slice (with Type 7 igneous looking areas). This is my 16th classification and is a nice-looking unique meteorite. SIZE: 72x39x2.4 mm The classification of NWA 15208 was done by A. Irving, UWS, and J. Boesenberg, BrownU in 2022. Northwest Africa 15208 (NWA 15208)(Northwest Africa)Purchased: 2004Classification: Ordinary chondrite (L5-7)History: Purchased in 2004 from a dealer in Toronto, who had obtained the material from a Moroccan source.Petrography: (A. Irving, UWS and J. Boesenberg, BrownU.) Breccia composed of Type 5 chondrite clasts within a sparse fine-grained matrix, and at least three large (3 to 5 mm) Type 7 chondrite clasts (analyzed in the studied thin section). The predominant lithology consists of sparse glass-free chondrules set in a recrystallized matrix containing stained kamacite, sodic plagioclase, augite, troilite, chromite, merrillite and chlorapatite. The Type 7 clasts have triple grain junction textures with no chondrule structures and are composed of more magnesian olivine and low-Ca pyroxene together with sodic plagioclase, augite, troilite, and chlorapatite.Geochemistry: Olivine (Fa25.3±0.6, range Fa24.6-26.2, N = 6), low-Ca pyroxene (Fs21.2±0.9Wo1.6±0.3, range Fs20.4-23.6Wo1.1-1.9, N = 9). Type 7 clast: olivine (Fa22.4±0.3, range Fa21.9-22.6, N = 7), low-Ca pyroxene (Fs19.3±0.5Wo2.2±0.6, range Fs18.9-19.7Wo1.8-2.6, N = 2), augite (Fs21.9Wo38.3).Classification: Ordinary chondrite (L5-7 breccia).Specimens: 24.3 g including one polished thin section at UWB Place of purchase:TorontoDate:P 2004Mass (g):559Pieces:1Class:L5-7Shock stage:S2Weathering grade:W1Fayalite (mol%):25.3±0.6Ferrosilite (mol%):21.2±0.9Wollastonite (mol%):1.6±0.3Classifier:A. Irving, UWS, and J. Boesenberg, BrownU.Type spec mass (g):24.3Type spec location: UWBMain mass:J. DivelbissComments:Work name JD22-12; submitted by A. Irving
Price: 59 USD
Location: Reading, Pennsylvania
End Time: 2025-01-08T19:10:06.000Z
Shipping Cost: 0 USD
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All returns accepted: ReturnsNotAccepted
Country/Region of Manufacture: United States
Modified Item: No
