- 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
- 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
- Each specimen is selected and hand processed, ensuring each sample exhibits defining features
- Sourced from a variety of locations around the world
- Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
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. Ideal for teaching students about rounding and sorting, as well as for identification & classification exercises. Provides an excellent example of chemically formed sedimentary rock.
While each specimen will vary slightly in shape, size and color, it will measure approximately 1" in length. Each is individually packaged, labeled & barcoded for easy identification and storage.
Each specimen is selected and hand processed, ensuring that each sample exhibits defining features. Pack of 12 samples.