Small rural school needs a classroom rock and mineral collection

Adam Mitchell, Hi-Plains School District R-23

Description of Desired Specimens

I'm the science teacher at a small rural high school, and this year we've added Earth Science to the curriculum. The school doesn't have any rocks or minerals, or a budget to buy them. I'm also a Biologist by training, so I don't really know what rocks or minerals I even need. Anything will help! Thank you!