Diabases
Diabases are fine-grained, dark-colored igneous rocks that are primarily composed of plagioclase feldspar and pyroxene minerals. They are typically found in dikes, sills, and other intrusive formations. Diabases have a high density and are known for their hardness and durability, making them popular for use as crushed stone in construction and road building. These rocks often exhibit a distinctive greenish-black to black coloration and may contain minor amounts of other minerals such as olivine or amphibole.