Gabbro is a rock
No, gabbro does not typically contain mineral quartz. Gabbro is a coarse-grained igneous rock composed primarily of calcium-rich plagioclase feldspar and pyroxene minerals. Quartz is not a common mineral in gabbro; it is more common in granitic rocks.
The mineral olivine is present in much greater quantities in peridotite compared to gabbro. Olivine is a common mineral in peridotite and gives it its characteristic green color, while gabbro contains less olivine and more plagioclase feldspar.
Gabbro has a dull to shiny luster, depending on the mineral composition and how the light reflects off its surface. It typically has a more mafic composition with minerals like pyroxene and amphibole, which can create a dull appearance, but variations in mineral content can lead to some sections of gabbro having a shinier luster.
The answer is Gabbro.
Olivine is the mineral present in much greater quantities in peridotite than gabbro. Peridotite is rich in olivine, while gabbro contains less olivine and more plagioclase feldspar.
similar mineral compositions but differ in their texture. Granite is coarse-grained, consisting of larger mineral grains that are visible to the naked eye, while gabbro is fine-grained with smaller mineral grains. Additionally, granite is typically found in continental crust, whereas gabbro is more common in oceanic crust.
Gabbro is typically dark green to black in color, with small mineral grains that are difficult to see with the naked eye.
Olivine is the mineral that is present in much greater quantities in peridotite compared to gabbro. Peridotite is rich in olivine, which gives it its characteristic green color, while gabbro contains less olivine and more dark minerals like pyroxene.
The fine-grained equivalent of gabbro is basalt. Basalt is an igneous rock that forms from the rapid cooling of lava on the Earth's surface, resulting in smaller mineral crystals compared to gabbro.
Basalt is a fine-grained volcanic rock, usually dark in color, while gabbro is a coarse-grained intrusive rock that is also dark in color. Basalt tends to cool and solidify quickly on the Earth's surface, resulting in a fine-grained texture, whereas gabbro cools slowly beneath the surface, allowing larger mineral crystals to form.
It is Gabbro
Gabbro typically cools slowly beneath the Earth's surface, allowing large mineral crystals to form. This slow cooling process results in a coarse-grained texture in gabbro rocks.