Rock Salt is a chemical sedimentary rock that forms from the evaporation of ocean or saline lake waters. It is also known by the mineral name “halite.” It is rarely found at Earth’s surface, except in areas of very arid climate.

Chert can also form by biochemical accumulation of silica-rich fossils in deep marine environments; however, distinction requires microscopic examination. Rock salt is a chemical sedimentary rock formed by the evaporation of seawater and the precipitation of halite.

Shale is a fine-grained, clastic sedimentary rock, formed from mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite. Shale is characterized by its tendency to split into thin layers (laminae) less than one centimeter in thickness.

Sedimentary rocks with non-clastic texture include fossiliferous limestone (above left), chert (above right) and coal (right). All three of these rock types can be found in Virginia.

What is another word for clastic rock?

Acid Reactions: Note, however, that limestone and dolomite intermix completely, so any weak acid reaction usually means dolomite. The other caution is, many rocks are contaminated with lime, especially clastic rocks, and they may react vigorously anyway.

Does slate react with acid? More importantly it is vulnerable to acids and as mentioned before, slate has the ingredients to generate sulfuric acid. Given “sufficient” water absorption (low grade slate), the sulfuric acid attacks the limestone (acid vs alkali) and produces gypsum and Carbon Monoxide.