Mudstone

Mudstone forms when mud collects on the bottom of lakes or the ocean. Mudstone is soft. It breaks easily. Mudstone can be red, brown, yellow, gray, or white. Mudstone is used to make bricks and pots for plants.

For more information about mudstone, check out the following links.

http://www.hf.uio.no/iakk/roger/lithic/mudstone.html

http://www.es.ucsc.edu/~es10/fieldtripNBridge/