Results of the Streak Test

Describing the Colors of Minerals

Our class did a streak test on minerals to see their true color. We had to wear gloves while handeling the minerals because it could irritate our skin. We worked in groups of two. We tested about 12 minerals with one black and one white tile. One of the green and white minerals turned out black on the white block. We could not touch the minerals. One mineral appeared completely white but when scratched appeared black. All of us wrote what the streak color was in our journals. Some minerals kind of surprised us because of how the streak color turned out.