Y-790260, 71-2

         An oblong almost complete stone with considerable fusion crust covering most of the meteorite. Two sides have less fusion crust, where abundant lithic and mineral clasts can be seen. The textures of clasts range from fine-grained, variolitic to coarse-grained, ophitic to subophitic. The largest clast reaches 1.5 cm in diameter. Mineral clasts include white angular plagioclases and honey brown pyroxenes.

         Thin section Y-790260, 71-1 reveals a breccia with plagioclase and pyroxene fragments in a dark matrix which appears to be partly shock-recrystallized. Many pyroxene fragments do not show distinct outer shape and their rims merge into the matrix, making angular plagioclase fragments more prominent. One large plagioclase clast reaches 3 mm in the longest dimension. Very large pyroxene fragments up to 5 mm in diameter are common. They have uniform cores rich in Mg (Ca₇Mg₆₄Fe₂₉) and dark brown rims (Ca₉Mg₄₅Fe₄₆), and reveal many dark fractures filled with Fe-rich olivines (Fa₆₆). These pyroxenes filled with olivine veins resemble those of the Y-75011, 84 clast. Pyroxene with exsolution textures are rare. One clast consists of fine-grained irregular aggregates of pyroxene rich in opaque inclusions and elongates patches of plagioclase, which do not show well-defined outer shape. One basaltic clast 1 mm in diameter shows a subophitic texture and contains chemically zoned pyroxenes of the Pasamonte type.