Newsletter |
43,1 |
Location |
Grosvenor Mountains |
Field Number |
25769 |
Dimensions (cm) |
4.4 x 5.2 x 3.4 |
Weight (g) |
121.65 |
Original Classification |
L3.4 Chondrite |
Pairing |
GRO 17026;
GRO 17167;
GRO 17177;
|
Fayalite (mol%): 1-35;Ferrosilite (mol%): 5-12 |
Be |
A/B |
70% - 90% of the exteriors are covered with black/brown rough fusion crust with some pitting, larger fractures and numerous small iridescent weathering spots. Areas without fusion crust show abundant inclusions/chondrules in grey matrix with some red-brown varnish also present. Interiors are dark grey to black matrix with abundant inclusions/chondrules, some large (up to 4 mm) that range in color from dark brown to light grey. Oxidation is scattered throughout and there are areas of rust. |
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 abundant. The meteorite is moderately weathered. Silicates are unequilibrated; olivines range from Fa6-23, with most grains Fa22, and pyroxenes from Fs3-24. The meteorite is an L3 chondrite (estimated subtype 3.8). |