Raw Coarse Marble Metamorphic Rock Hand Sample, Approx 3 inch

This 3-inch hand sample of raw coarse marble is a metamorphic rock specimen formed from limestone under high pressure and low heat. The massive crystalline texture illustrates the effects of metamorphism and supports geology lessons on rock cycle transformation. Despite its dense structure, marble effervesces in dilute acid, providing a useful classroom identification test that distinguishes it from non-carbonate rocks. Each specimen is individually labeled and barcoded, and comes packaged in a clear storage bag. Hand-processed in Victor, NY, this sample supports NGSS-aligned instruction on rock transformation and mineral properties.