Mineral Replacement Set

Mineral Replacement Set – Soft Minerals for Testing Activities During hands-on testing activities, some minerals break, flake, or crumble easily—that’s part of their natural physical properties. The Mineral Replacement Set is designed to replace those commonly damaged specimens so students can continue testing and learning without interruption. This set includes one replacement specimen of each soft mineral, numbered to match Cornerstone’s Deluxe Mineral Kit for easy organization and reference. Included Minerals #6 Biotite mica #7 Calcite #10 Sulfur #13 Kaolin clay #15 Muscovite mica These minerals are frequently used in hardness, streak, and physical property tests, where breakage is expected and educational. The Mineral Replacement Set helps keep your collection complete and ready for continued hands-on geology and mineral identification.