Newsletter |
29,1 |
Location |
LaPaz Ice Field |
Field Number |
16432 |
Dimensions (cm) |
1.25 x 1.0 x 0.75 |
Weight (g) |
2.06 |
Original Classification |
H3 Chondrite |
Updated Classification |
H3.8 Chondrite |
Fayalite (mol%): 6-37;Ferrosilite (mol%): 8-22 |
B |
A/B |
50% of this ordinary chondrite's exterior has brown/black fusion crust with oxidation halos. The interior has a black matrix with rust and mm sized gray chondrules. |
The section exhibits numerous well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. Silicates are unequilibrated; olivines range from Fa6-37, with most grains Fa18, and pyroxenes from Fs8-22. The meteorite is an H3 chondrite (estimated subtype 3.8). |
Classification updated to H3.8. |