Sample region is more oblong than -025, angular edges, more football sized; Many pieces broken into several pieces, black. massive serpentinite, possible gabbro dike
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].