Mariana Trench. Three buckets of samples available each individually labeled 2,3, and 4.
2 1/2 bags large + small Manganese concretions; 1/2 bag siltstone, large to med.; 1 small bag hard rocks. Total: ~300 lbs.
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].