Newsletter |
44,1 |
Location |
Mt. Prestrud |
Field Number |
24725 |
Dimensions (cm) |
2.1 x 2.4 x 2.1 |
Weight (g) |
15.47 |
Original Classification |
R3 CHONDRITE |
Pairing |
PRE 95404;
PRE 17271;
PRE 17272;
PRE 95410;
PRE 95411;
PRE 95412;
|
Fayalite (mol%): 12-44;Ferrosilite (mol%): 6-13 |
A/B |
B |
Patchy black fusion crust covers about 70% of exterior. It is rough, fractured and pitted with some larger areas of iridescent weathering. Exposed areas are dark grey-brown matrix with numerous round inclusions that range in size up to 1mm and some deep pits, almost vesicular. Fresh interior is also grey-brown matrix with inclusion s that range in color from light to dark grey and some orange rust near exterior edges. |
These sections are similar enough that one description suffices. The sections consist of ~50% distinct chondrules (up to 1 mm) and chondrule fragments set in a slightly recrystallized matrix of silicates, sulfides and chromite. Olivine compositions are Fa12-47 with most at Fa39, while pyroxenes range from Fs2-25. The meteorites are heavily shocked. The meteorites are R chondrites and may be associated with the PRE 95404 pairing group. |