- 12 rock gypsum specimens approximately 1" (3cm) in length
- Formed from the lithification of sulfate evaporate 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 clear labeled bag for ideal storage
Gypsum is a sulfate mineral formed as the byproduct of evaporating saltwater. When this mineral becomes lithified, it forms rock gypsum, a sedimentary rock. Pack of 12 samples.