Newsletter |
36,2 |
Location |
LaPaz Ice Field |
Field Number |
22972 |
Dimensions (cm) |
3.5 x 2.2 x 1.5 |
Weight (g) |
15.43 |
Original Classification |
Howardite |
Fayalite (mol%): 34-41;Ferrosilite (mol%): 15-56 |
A/B |
A/B |
The exterior has 15% black fusion crust with oxidation haloes. Exposed interior is gray in color. The interior is light gray matrix with some oxidation. Inclusions of various sizes and color are visible. |
This meteorite is dominated by fine-grained (~100-200 micron average grain size) basaltic material which occurs as both the matrix and larger individual pyroxene clasts within the meteorite. Two composite clasts are present in the section; one appears to be a melt clast with pyroxene grains with reaction rims, and the other looks like a multi-domained pyroxene that may have been recrystallized. Pyroxene compositions range from Fs15Wo1-5 and plagioclase is An64-99Or0-3. Two olivine analyses of Fa34 and Fa41 were obtained. The Fe/Mn ratio of the pyroxene is ~27-35. The meteorite is a howardite. |