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Black Streak Plate – Mineral Streak & Hardness Testing Tile
This black streak plate is an essential tool for mineral identification, used to perform both the streak test and basic hardness testing. Measuring 2" x 2", each tile provides a smooth, durable surface that clearly reveals a mineral’s true streak color—often more reliable than surface color alone.
Made for repeated classroom and home use, these streak plates clean easily with soap and water and are built to last for years of geology study. The plate is flat on both sides, allowing students to perform the streak test on one side and use the other for simple demonstrations—yes, even streak-writing their name during activities.
This tool is ideal for Earth science labs, mineral testing kits, rock collections, and hands-on geology lessons, helping students practice proper testing techniques while building confidence in mineral identification.
Important Note for CC Directors:
This is the correct type of streak plate required for Cycle 1, Week 14 – Streak Test Experiment. The flat, double-sided design makes it especially student-friendly for that activity.
A simple, durable, and highly effective tool for anyone studying minerals, rocks, and geology.