Antarctic Search for Meteorites (ANSMET) Search this
Place:
Antarctica
Collection Date:
2005
Notes:
# NASA data for MCY 05229 Weathering: B Fracturing: B Pairing: MCY 05229 Fa: 1-28 mol %
The fusion crust on the exteriors of these carbonaceous chondrites range from brown to black to purplish patches and some have polygonal fractures. The interiors are a black soft matrix with mm sized white inclusions.
The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa₀₋₄₀, pyroxene is Fs₁₋₆. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.
