GRA 98019	GRA 98037	GRA 98055

Macroscopic Description: Kathleen McBride
These fine-grained achondrites vary in color from gray to tan to greenish and also contain various colored clasts.  All possess varying amounts of fusion crust that is brown-black in color and usually contains small shiny patches.  Most of them are “vuggy” and show varying degrees of weathering.  Thin, black glassy veins are visible in the matrix.  Some (usually the greenish ones) have areas of rusty-red minerals that have stained the adjacent minerals red.

Thin Section Description: Tim McCoy

GRA 98019	GRA 98037	GRA 98039	GRA 98042	GRA 98043	GRA 98052
GRA 98097	GRA 98113	GRA 98114	GRA 98157	GRA 98158	GRA 98159

These meteorites are dominated by fine-grained (~200 micron average grain size) basaltic material which occurs as both the host and clasts within these meteorites.  Occasional coarser-grained clasts, with grain sizes up to 0.5 mm, are observed in some members of the group, including GRA 98042, GRA 98052 and GRA 98055.  Mineral compositions are similar and homogeneous with orthopyroxene (Fs₆₄Wo₂), with lamellae of augite (Fs₂₈Wo₄₄), and plagioclase (An₈₉Or_0.5). The Fe/Mn ratio of the pyroxene is ~28.  The meteorites are brecciated eucrites.