D4K: Rocks and Minerals
Special | 28m 49s | Video has closed captioning.
Idaho's geology makes it a special place for finding many different kinds of rocks and minerals. Minerals are made from 92 chemical elements that join together in many different ways. A rock is a material made of one or more minerals. Dr. Virginia Gillerman and Professor Scott Hughes answer students’ questions about rocks and minerals.
Aired: 05/20/08
