Antarctic Search for Meteorites (ANSMET) Search this
Place:
Antarctica
Collection Date:
1997
Notes:
# NASA data for QUE 97990 Weathering: Be Fracturing: B Fa: 0-61 mol % Fs: 0-1 mol %
Exterior of this carbonaceous chondrite has rough purplish black fusion crust on 50% of the surface. Polygonal fractures and evaporites are also visible. The interior matrix is black and contains white and rust colored chondrules up to 1 mm in size.
The sections consist of a few small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. A slight lineation, with some chondrule flattening, is present. Olivine compositions are Fa₀₋₆₁, with many Fa₀₋₂, orthopyroxene is Fs₀₋₁. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.
