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Feature

Gray limestone sample approximately 1" (3cm) in size
Limestone formed from the precipitation of calcium carbonate out of solution, in the ocean or in a shallow marine environment
Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements
Excellent for demonstrating the tendency of calcium carbonate to effervesce in acid
Specimen comes in clear labeled and barcoded bag for ideal storage

Description

Limestone is made up of organic material, mostly calcium carbonate. The massive, gray variety is often found despoited in marine environments. Limestone is an important rock in industry and education. In the classroom it can be used in identification exercises and demonstrating the differing deposition styles of sedimentary rocks. This sample is also available in packs of 12.