5. Hardness testers—penny, square of window glass, pocket knife, or
nail.
6. Streak plate—piece of unglazed white porcelain (such as the back of a
tile) for testing the color of the streak of minerals.
7. Notebook and pencil for keeping records of the locality and bed from
which specimens are collected.
8. Collecting bag—a musette bag, a knapsack, or similar bag of strong
material.