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).
Sedimentary rocks are formed by the accumulation of sediments. There are three basic types of sedimentary rocks. Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris.edimentary rocks are formed by the accumulation of sediments. There are three basic types of sedimentary rocks. Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris.