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Catalog Data

Expedition:
Antarctic Search for Meteorites (ANSMET)  Search this
Place:
Antarctica
Collection Date:
1991
Notes:
# NASA data for WIS 91627 Weathering: B/C Fracturing: A Fa: 26-8 mol % Fs: 2-22 mol %
Oxidation haloes are present in the black fusion crust which covers 75% of WIS91627. Light gray and white inclusions/chondrules are visible in the mostly brown colored interior. Metal is obvious.
The section shows numerous chondrules and chondrule fragments, up to 1.2 mm across, in a granular matrix consisting largely of olivine and pyroxene, with a moderate amount of nickel-iron and minor troilite. Some weathering is indicated by brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa₈₋₂₆, mean Fa₁₈ (CV FeO is 28); pyroxene, Fs₂₋₂₂. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron H group, hence the meteorite is classified as an H3 chondrite (estimate H3.7).
Record Last Modified:
21 Sep 2023
Specimen Count:
1
See more items in:
Mineral Sciences
Meteorites
Antarctic Polished Thin Section Collection
Digital Collection: Micrographs
Data Source:
NMNH - Mineral Sciences Dept.
GUID:
http://n2t.net/ark:/65665/34969f03f-f210-43c6-9443-5366cd070c10
EDAN-URL:
edanmdm:nmnhmineralsciences_1038936