Sphalerite Specimen, ±1" in size, Each

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Here is the corrected text: This sphalerite sample measures approximately 1 inch (3cm) in size. Often mined as a zinc ore, it is the perfect size for use in classroom identification labs and exercises, correlating well with Next Generation Science Standards Evidence Statements. Notably, sphalerite sometimes exhibits triboluminescence, meaning it will glow when fractured. Each specimen comes in a clear, labeled, and barcoded bag for ideal storage. This pack includes 12 specimens.