1 Sapphire blue is a cool color. 2  Sapphire carries the blue symbolism of importance and confidence. 3  Although it's not a light or pastel blue, it still has something of a fresh, spring-like quality with a touch of childlike playfulness.
Sedimentary rocks make up only 5% (by volume) of the upper 10 miles of the crust, but about 75% of the outcrops on the continents. Two primary types of sedimentary rocks: 1  Chemical-precipitate from solution (e.g., limestone); most important constituents are calcite, dolomite, chalcedony (SiO2), gypsum, and halite.2  Chemical sedimentary rocks can be further divided as to: 3  inorganic (e.g., limestone, rock salt, dolomite). Chemical-precipitate from solution (e.g., limestone); most important constituents are calcite, dolomite, chalcedony (SiO2), gypsum, and halite. 2  Chemical sedimentary rocks can be further divided as to: 3  inorganic (e.g., limestone, rock salt, dolomite). 4  organic (e.g., limestone or coal).
Siltstone is made from silt particles cemented together. Shale is made from silt particles cemented together. It is similar to siltstone but with even finer grain size, The table below shows examples of common chemical sedimentary rocks.Clicking on the name of the rock will bring up a larger picture and a description of the rock type in a new window.rain size is one factor in classifying sedimentary rocks .Clicking on the name of the rock will bring up a larger picture and a description of the rock type in a new window.