Mafic, igneous rocks
Mafic, igneous rocks
Lherzolite rock typically contains minerals such as olivine, orthopyroxene, clinopyroxene, and sometimes chromite or garnet. These minerals make up the typical mineral assemblage found in lherzolite rock, which is a common type of peridotite.
Peridotite is a coarse-grained, dense igneous rock composed mainly of olivine and pyroxene minerals. It is typically green in color due to the high concentration of olivine. Peridotite is commonly found in the Earth's upper mantle and is important in the formation of oceanic lithosphere.
Ultramafic igneous rocks are comprised mostly of olivine and pyroxene. Examples include peridotite (pegmatic and porphyritic) and komatite.
One of the first minerals to crystallize from liquid rock in a mafic igneous sill would likely be olivine. Olivine has a high melting temperature and tends to crystallize early in the cooling process due to its simple mineral structure.
Mafic, igneous rocks
Lherzolite rock typically contains minerals such as olivine, orthopyroxene, clinopyroxene, and sometimes chromite or garnet. These minerals make up the typical mineral assemblage found in lherzolite rock, which is a common type of peridotite.
the minerals are olivine and pyroxene ..you're welcome
Peridotite is a coarse-grained, dense igneous rock composed mainly of olivine and pyroxene minerals. It is typically green in color due to the high concentration of olivine. Peridotite is commonly found in the Earth's upper mantle and is important in the formation of oceanic lithosphere.
an ultramafic composition
Basalt is a rock composed of minerals which are composed of elements.
A hard, coarse plutonic rock that contains large amounts of olivine.
Ultramafic igneous rocks are comprised mostly of olivine and pyroxene. Examples include peridotite (pegmatic and porphyritic) and komatite.
When basaltic magma cools, it typically forms basalt rock. Basalt is a fine-grained, dark-colored volcanic rock rich in iron and magnesium minerals. It often contains characteristic minerals such as pyroxene, plagioclase feldspar, and olivine.
One of the first minerals to crystallize from liquid rock in a mafic igneous sill would likely be olivine. Olivine has a high melting temperature and tends to crystallize early in the cooling process due to its simple mineral structure.
Ultramafic rocks are made of ferromagnesian minerals.
Sand is formed from the breakdown of rocks. If a rock contains large amounts of olivine, then when this rock weathers, olivine sand will be formed. There are beaches in New Zealand that are almost exclusively made of green olivine crystals.