Geolabstuff is a forum where academic geologists can trade materials, chat about textbooks, review venders, and exchange ideas about labs and teaching.

Maybe over the years you have collected your weight in shatter cones. You're glad to have one or two to show the students, but you realize that you don't really need several drawers full of them. And they're way too nice to throw away. This is the place where you can trade those extra treasures that accumulate in all geology labs for the samples that you need and want for your classes. Go to the forum.