Rock Gypsum Specimen, ±1" in size , Each

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Here is the corrected text: Gypsum is a sulfate mineral formed as a byproduct of evaporating saltwater. When this mineral becomes lithified, it forms rock gypsum, a sedimentary rock. These 3cm samples are great for use as classroom specimens or as part of a small rock collection. Rock gypsum specimen approximately 1 inch (3cm) in length Formed from the lithification of sulfate evaporite deposits Perfect size for use in classroom identification labs and exercises, corresponding well with Next Generation Science Standards evidence statements Useful for rock/mineral comparison studies, as well as lessons on sedimentary rock formation Specimens come in a clear labeled bag for ideal storage