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Northwest Africa 11435 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11435 This is an OFFICIAL meteorite name. Abbreviation: NWA 11435 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 199 approved meteorites classified as CK5. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 13 Oct 2017 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 106:
Northwest Africa 11435 (NWA 11435) (Northwest Africa) Purchased: 2017 May Classification: Carbonaceous chondrite (CK5) Petrography: (K. Metzler, IfP) Chondrules with apparent diameters up to 1.3 mm and CAIs are embedded in a fine-grained brownish matrix. Opaques are Cr-bearing magnetite and pentlandite. No metal was found . Geochemistry: Mineral compositions and geochemistry: Olivine composition Fa31.7±0.2 (31.5-32.2; n=15). Composition of low-Ca pyroxene Fs26.2±0.5 (25.4-27.5); Wo0.8±0.3 (0.5-1.6; n=15). Composition of Ca-rich pyroxene Fs9.9; Wo45.7 (n=2).The compositional range of feldspar (n=2) is An38-40. One plagioclase grain in a CAI shows An86. Most abundant opaques are Magnetite and Pentlandite. No metal was found. Magnetite shows significant concentrations of elements other than Fe (n=4): MgO 0.4 wt%; Al2O3 1.9 wt%; Cr2O3 5.4 wt%. Classification: CK chondrite based on mineral chemistry. Petrologic type 5 based on the equilibrated state of olivine and pyroxene and clear visibility of chondrules. | ||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |