I found a small shell fossil on a piece and there seems to be other fossil imprints that have sadly wore away. I was wondering however, if I should try and break it open. Being such a minute find, it's not a huge deal if it is lost, but I am also new to this and don't know how likely it would be to find more fossils within.
Note 01: The shell mold is very faint in the image and more pronounced in person. Seen on image No. 01.
Note 02: There seems - to me - to be a fold or seam in the rock that would seem to make it easier to split with a chisel. Seen on image No. 01, on the bottom right.
Note 03: There are crystalline elements on the surface, much like small quartz formations or granite particulate, possible suggesting a geode?
.