Antarctic Search for Meteorites (ANSMET) Search this
Place:
Antarctica
Collection Date:
1991
Notes:
# NASA data for PCA 91077 Weathering: A Fracturing: A Fs: 25 mol %
This dome-shaped fragment has very black fusion crust covering about 60% of its surface. Small areas have been physically plucked out. One exterior surface shows a light gray-green matrix with small darker clasts. The material exposed by chipping of this meteorite is gray with darker gray clasts.
The section consists almost entirely of orthopyroxene clasts, up to 1.5 mm in maximum dimension, in a matrix of comminuted orthopyroxene. The pyroxene is uniform in composition, Wo3</aub>Fs<sub>25. The meteorite is a diogenite.
