EISCO 6PK Raw Limestone Chalk, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack Labs

Features:

• LIMESTONE CHALK | Limestone is made up of organic material, primarily calcium carbonate. The chalk variety consists of the shells of coccolithophores, small platy animals that stack together and powder easily. Large layers of chalk indicate a low-oxygen environment, most likely ancient seafloor beds
• GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Provides an excellent example of chemically formed sedimentary rock. This set of six samples is excellent for group study and examination
• GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
• LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
• PACKAGED & LABELED | All six samples are packaged in a transparent bag and is labeled & and barcoded for easy identification.