Sample No.: ALH84126

Location: Allan Hills

Weight (g): 41.2

Field No.: 2006

Dimensions (cm): 3.5 x 3.5 x 2

Meteorite Type: LL3 Chondrite

Macroscopic Description,: Roberta Score

This fragment retains four small patches of fusion crust. The overall exterior color is brown. Numerous chondrule/inclusions show relief on the surface, giving the exterior a rough texture. Weathering has extended deep into the interior. The less weathered material is medium gray with abundant rounded and irregular shaped inclusions.

Thin Section (,2) Description: Brian Mason

The section shows a close-packed aggregate of chondrules, chondrule fragments, and angular clasts, ranging up to 3 mm across. Many of the chondrules have dark rims. A variety of chondrule types is present, including porphyritic olivine, granular olivine and olivine-pyroxene, and radiating pyroxene. A few grains of nickel-iron and troilite are present. Olivine and pyroxene have variable compositions. Olivine composition ranges Fa7-31 with a mean of Fa16 (% mean deviation of FeO is 46). Pyroxene composition ranges Fs3-24, with a mean of Fs9 (% mean deviation of FeO is 45). The texture and variable mineral compositions are those of type 3, and the amount of metal suggests LL group, hence the meteorite is tentatively classified as an LL3 chondrite.