Some probable sandstone fragments, mn crust, dark minerals, CaCo3 crust (?), adhering to dark mineral; bone. Possible most derived from basaltic origins. See also trigger weight. RC15-D13TW
Cite the IMLGS database as: Curators of Marine and Lacustrine Geological Samples Consortium. The Index to Marine and Lacustrine Geological Samples (IMLGS). National Geophysical Data Center, NOAA. doi:10.7289/V5H41PB8 [date of access].