1.43 grams NWA 6859 Meteorite fragment (Class CV3) found in NorthWest Africa COA for Sale

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1.43 grams NWA 6859 Meteorite fragment (Class CV3) found in NorthWest Africa COA For Sale

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1.43 grams NWA 6859 Meteorite fragment (Class CV3) found in NorthWest Africa COA:
$6.99

Northwest Africa 6859 Basic informationName: Northwest Africa 6859
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6859
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 710 g

Meteoritical is 1 of 448 approved meteorites classified as CV3.Approved 7 Mar 2015

Northwest Africa 6859(NWA 6859)

(Northwest Africa)

Purchased: 2010

Classification: Carbonaceous chondrite (CV3)

Petrography: (R. Andreasen, UHou) In thin section, ~55% chondrules of different types (PO, BO, and to a lesser extent POP) with an apparent diameter of about 1 mm, ~3% CAIs of different morphologies, small 1-2 mm irregular CAIs common, larger ~10 mm near spherical CAIs less common, ~1% Fe-Ni sulfide (pentlandite), weathered in places (~10%) and replaced by oxides. Contains ~40% light-gray, fine-grained crystalline matrix that appears fresh. No metal (or replacement products of metal weathering) was observed and no opaque phases were seen in the chondrules studied.

Geochemistry: Mineral Composition and Geochemistry: (R. Andreasen, UHou - EPMA analyses performed on the JSC microprobe) Chondrule olivine Fo98.3±1.5 (Fo93.7-99.8, n=45). Matrix olivine, variable in composition, mean Fo56.6±4.8 (Fo51.3-60.3, n=7). Chondrule pyroxene, En93.5±1.0Fs1.3±0.6Wo4.8±1.0. Sulfides (pentlandite) Ni 18.1±0.6 wt%, Co 0.9±0.1 wt%, (n=19)

Classification: Carbonaceous chondrite (CV3, oxidized subgroup).

Specimens: Thin section at UHou. 20.7 g at the AMSA.

Place of purchase:Erfoud, MoroccoDate:P 2010Mass (g):710Pieces:manyClass:CV3Shock stage:lowWeathering grade:low

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