Sample No.:	GRA 06189
Location:	Graves Nunataks
Field No.:	17753
Dimensions (cm):	1.5 x 1.5 x 1.0
Weight (g):	2.941
Meteorite Type:	Eucrite (Unbrecciated)

Macroscopic Description: Kathleen McBride
Shiny black fusion crust with fine "wrinkles" covers the exterior of this achondrite. The interior matrix ranges from dark to light gray with patches of yellow brown areas.

 

Thin Section (,2) Description: Tim McCoy, Lauren LaCroix and Linda Welzenbach
The section consists of a coarse-grained unbrecciated gabbro composed of pyroxene and plagioclase with grain sizes reaching 3 mm. Shock effects are pervasive, including mosaicism in both pyroxene and plagioclase. Silicates are homogeneous with orthopyroxene of Fs₆₀Wo₂, clinopyroxene of Fs₂₆Wo₄₃ (Fe/Mn~30) and plagioclase of An₉₀. The meteorite is an unbrecciated eucrite.

Thin Section Images

Plane-Polarized Light GRA 06189	Cross Polarized Light GRA 06189

Lab Images