Process manufacturing produces co-products and by-products. A co-product is a saleable end item that results from a process. A by-product is a material of value that is produced incidental to or as a residual of the process.
D. a rock with metamorphic minerals but no foliation or lineation. A shale is metamorphosed into three rock types: (1) a banded gneissic rock; (2) a rock with small mica crystals with a shiny aspect; (3) a very shiny rock with large mica crystals; and (4) a dull slate with cleavage. Which of the following lists these rocks in order of increasing metamorphic grade?
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.