I've been looking for
identification of one of my gastropod fossils for a long time. I bought
it in an obscure little shop somewhere in the middle of nowhere, where
they had no information on it what so ever. I was giving it another
go on the Internet, to no avail. But there you were.
I was hoping you could place a photograph of this shell on your page,
so that I may finally find peace.
- 3 cm (1.2 inches),
and I bought it in a shop in Holland.The shell itself has crystallized
into what I think is quartz. It came with zero information, unfortunately.
- I suspect that it is calcite rather than quartz, although localities
exist with quartz either replacing or casting shells. Calcite often
has about that color. There are some easy but destrutive ways to tell
the two apart, but if he can make out individual crystals the shape
will help. There's no fixed amount of time required for this sort
of preservation-it can be in the Pliestocene or the Cambrian.
Identifying the snail is difficult with no idea of just where it came
from. Does it seem likely that it came from somewhere in the general
area (northwest Europe), or might this be something from anywhere
in the world?
Anything visible in the rock? It probably contains microfossils of
some sort, but they require fancy preparation techniques and a high-power
microscope. You might be able to get someone at a local college geology
department to take a look ( e.g., by assigning a piece of the rock
as an unknown for a student to work on).
If the rock is soft enough, clearing it away to expose the opening
of the snail could help.--
Dr. David Campbell