There is no regulation for supplements by the government, which has  led to a lot of controversy in the media lately. Since there is no  standard for regulating supplements,â¦ some companies have been under  scrutiny for being misleading on the ingredients in their  supplements. If you do choose to take a supplement, be sure to do  your research so that you know what is going into your body and how  it may react.
Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-size mineral particles that we commonly call mud. This composition places shale in a category of sedimentary rocks known as mudstones.
Best Answer: None of the choices is a chemical rock. Shale and sandstone are clastic sedimentary rocks. Halite is an evaporite mineral. It could be considered a chemical mineral, but it is not a rock. Breccia is a series of angular rock fragments. Most geologists use the term breccia to describe rock fragments originating from tectonic processes, and much more rarely from sedimentary processes.