The 15 rocks in this group are those derived from preexisting rocks through the processes of erosion, followed by compaction and chemical precipitation. Specimens are about 1 1/2" and are number coded and keyed to a list. In compartmented container.
Specimens are about 1 1/2" and are number coded and keyed to a list
In compartmented container
The 15 rocks in this group are those derived from preexisting rocks through the processes of erosion, followed by compaction and chemical precipitation. Specimens are about 1 1/2" and are number coded and keyed to a list. In compartmented container.