Dolostone is a rock. Dolomite is the mineral often composing dolostone.
Basalt !! :)
Basalt is known as a type of rock. This rock is a dark-colored and fine grained.
Basalt
The igneous rock you are referring to is basalt. It is a fine-grained, dense, and dark-colored rock that forms from low-silica magma rich in iron and magnesium.
The dark-colored mineral in coarse-grained igneous rocks is likely to be biotite or hornblende. These minerals are commonly found in rocks like diorite, gabbro, and basalt.
Dolostone is a rock. Dolomite is the mineral often composing dolostone.
Mineral bands in metamorphic rocks have light and dark colors due to differences in mineral composition and crystal structure. Light-colored bands may contain minerals like quartz and feldspar, which are commonly lighter in color, while dark-colored bands may have minerals like biotite or amphibole, which are darker in color. These variations result from the specific conditions of pressure, temperature, and chemical composition during the rock's formation.
The dark spots on the Moon, known as lunar maria, are made up of basalt rock formed from ancient volcanic activity. Basalt is a dark-colored, fine-grained volcanic rock that is rich in iron and magnesium minerals.
Mafic igneous rocks, like basalt, are dark colored and low in silica.
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
The color of igneous rocks is determined by their mineral composition. Dark-colored igneous rocks, like basalt, contain minerals that are rich in iron and magnesium, which give them their dark appearance. Light-colored igneous rocks, like granite, tend to have higher concentrations of quartz and feldspar minerals, which are lighter in color. Overall, the mineral content and composition of the rock influence its color.
Dark colored igneous rock
gabbro
Mafic igneous rocks, like basalt, are dark colored and low in silica.
Scoria is a highly vesicular (porous), dark colored volcanic rock.