Anyone know where i might be able to find a good amount of slate in/near Cass County? We are setting up a 125 gal tank for our 2 map turtles, mollies, and plecos. I understand that no substrate is preferable with turtles, but we prefer to have something. Possibly some sand as well. We have lots of quarries nearby, but most of those are limestone, i believe. I'd like some larger pieces of slate. Thanks!