12 Pack – Raw Greywacke, Sedimentary Rock Specimens – Approx. 1″

Raw Greywacke Specimen
Set of 12 Samples, 1″

Graywacke is a sedimentary rock composed of large, angular clasts within a fine-grained clay matrix. Formed during underwater avalanches, these rocks are often found on distal ocean shelves. Ideal for identification & classification exercises. Useful when digging deeply into sedimentary petrology .
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.

Selected & Processed by a Geologist.
Each and every specimen is selected and hand processed by an actual geologist, ensuring that each sample exhibits defining features. Rocks and minerals are sourced from a variety of locations around the world and are processed by hand in Victor, NY.
Technical Support
Always feel free to reach out to our team of scientists and geologists for additional information, or to assist you with any questions regarding our rock and mineral samples.