Sample No.: EETA79006

Location: Elephant Moraine

Field No.: 1042

Weight (gms): 716.4

Meteorite Type: Howardite

Physical Description: Roberta Score

Dull to shiny black fusion crust appears on only part of one surface on this achondrite. Many vugs are apparent, some of which have clasts in their interior. The medium gray matrix contains a variety of clasts (dark gray, yellow, white colored clasts), the largest being 1 cm in its longest dimension. Several rounded spots of oxidation are obvious and several cracks appear to penetrate the sample. Dimensions: 14 x 8.5 x 4.5 cm.

Petrographic Description: Arch Reid

The thin section shows a fine breccia with angular pyroxene and feldspar fragments and less common opaques. The larger pyroxene fragments up to 1 mm are commonly deformed and some show exsolution. There are a variety of clast types and these include the following: 1) small eucritic fragments with fine grain size, clasts up to 2 mm; 2) polymineralic pyroxene-feldspar intergrowths; 3) fragments of brown devitrified glass, up to 1 mm; 4) one fragment, 2 mm, with feldspar >> pyroxene; 5) one fragment, 2 mm, with pyroxene >> feldspar, and; 6) one 4.5 mm recrystallized eucrite clast with mosaic texture. Analysis of pyroxenes yields a wide range of compositions from Wo1En80Fs19 to Wo15En28Fs57. The meteorite contains a variety of clast types and a wide range of pyroxene compositions and is classed as a howardite.