1.02 grams NWA 7197 Meteorite ( class L3.8 ) fragment Northwest Africa with COA for Sale

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1.02 grams NWA 7197 Meteorite ( class L3.8 ) fragment Northwest Africa with COA For Sale

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1.02 grams NWA 7197 Meteorite ( class L3.8 ) fragment Northwest Africa with COA:
$5.49

Northwest Africa 7197Basic informationName: Northwest Africa 7197
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7197
Observed fall: No
Year found: 2009
Country: Morocco
Mass: 1149 g
Classification
history:Meteoritical Bulletin: (2012) L3.8Recommended: L3.8 This is 1 of 68 approved meteorites classified as L3.8.
Comments:Approved 8 Mar 2012

Northwest Africa 7197 (NWA 7197)

Morocco

Purchased: 2009

Classification: Ordinary chondrite (L3.8)

History: Purchased by B. Reed in Tucson, 2009.

Physical characteristics: Cut surface shows gray matrix with some patches of red-brown oxidation, chondrules to 3mm, some rimmed by metal or sulfide.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows olivine, orthopyroxene, clinopyroxene, feldspathic mesostasis, BO, PO, POP chondrules, ubiquitous troilite, Fe-Ni metal, and weathered iron oxide.

Geochemistry: (C. Agee and N. Wilson, UNM) Olivine Fa25.6±4.3, Fe/Mn=59±16, n=37, low-Ca pyroxene Fs14.5±7.2Wo1.1±0.9, Fe/Mn=32±15, n=33, high-Ca pyroxene Fs20.1±3.1Wo27.2±7.9, Fe/Mn=32±3, n=5.

Classification: Ordinary chondrite (L3.8), subtype statistically based on olivine sigma of Fa=4.3 or PMD=15 (n=37) and low-Ca pyroxene sigma of Fs=7.2 or PMD=47 (n=33). Weathering grade W3.

Specimens: 25.1 g including a probe mount on deposit at UNM, Reed holds the main mass.

Place of purchase:TucsonDate:P 2009Mass (g):1148.5Pieces:1Class:L3.8Weathering grade:W3

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Thanks, John Humphries, P.O. BOX 310, Tombstone, AZ 85638