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Demonstrates Irregular Breakage |
Each specimen illustrates a type of mineral breakage that does not leave a smooth cleavage surface. The set is housed in a compartmented collection box, and an identification list is included.Contents:6 numbered samples, 1″ x 1″Minerals:Even Fracture: lithographic limestoneUneven Fracture: serpentineConchoidal Fracture: obsidianSubconchoidal Fracture: rose quartzSplintery Fracture: tremoliteHackly Fracture: copper
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