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Northwest Africa 8164 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8164 This is an OFFICIAL meteorite name. Abbreviation: NWA 8164 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 77 approved meteorites classified as CK6. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 29 Dec 2013 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 8164 (NWA 8164) (Northwest Africa) Purchased: Oct 2013 Classification: Carbonaceous chondrite (CK6) History: Bought by Michael Farmer in October 2013 from a meteorite dealer in Morocco. Physical characteristics: Single, 62.0 g bullet-shaped stone with weathered fusion crust. Sawn surface dominated by asparagus-green olivine. Petrography: (L. Garvie, ASU) Coarse-grained recrystallized matrix. Scattered large chondrules (mainly 200 to 800 μm, one to 2 mm), commonly mantled by opaques. Mineralogy dominated by olivine, pyroxene with a wide range of compositions, plagioclase, and Cr-rich magnetite, and minor Ca-Cl phosphate and Fe-rich Ni sulfide. Plagioclase to 150 μm. Most sulfides weathered. Geochemistry: Olivine Fa30.6±0.2, NiO=0.48±0.07, FeO/MnO=108.2±14, n=6. Pyroxenes - low Ca pyx Fs25.6±0.2Wo0.6±0.2, n=2; pigeonite Fs24.0Wo6.7; augite Fs13.7±3.1Wo32.9±9.2, n=2; and diopside Fs8.4Wo47.4. Magnetite Cr2O3=4.1±0.1 wt% and NiO=0.27±0.02 wt%, n=2. Classification: Carbonaceous chondrite CK6. Moderately weathered. Specimens: 13.5 g and polished mount at ASU. Fredric Stephan holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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Institutions and collections |
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |