17 pieces of claystone-intensly burrowed with a few worm tubes present and thin crust of manganese. 5 pieces of possible schist-rich in mica-biotite with quarzt and feldspar.
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].