Includes twelve streak plates Used to determine a mineral's color in powder form, or to identify the mineral content of a rock Great for geology and earth science classrooms Streak plates can be cleaned and reused again and again Each plate is made of off-black, unglazed porcelain Streak plates measure 1.9 in
long, 1.9 in
wide, and 0.2 in
high By scraping a specimen across the unglazed, porcelain plates, students learn to identify minerals by examining the powder color of the streak