I have quite a few casts (too many to post here) of small shells. They are preserved in extremely soft matrix and I am worried about the matrix falling apart over time. The matrix also appears to dissolve quickly when exposed to water. I've lost a few specimens to my failed attempts at extraction with water (lesson learned). I live in Virginia which can be very wet and humid at times, especially in the spring/late summer. I'm trying to avoid posting pics (I'm inherently very lazy) but I will if need be. Thanks.