Where is gabbro found
- how is gabbro rock formed
- how is gabbro rock made
- how does gabbro rock form
- how is gabbro formed
Gabbro color.
Gabbro is a dark-colored coarse-grained intrusive igneous rock.
Gabbro rock type
The specimen shown above is about two inches (five centimeters) across.
What is Gabbro?
Gabbro is a coarse-grained, dark-colored, intrusive igneous rock. It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite.
It is the most abundant rock in the deep oceanic crust. Gabbro has a variety of uses in the construction industry. It is used for everything from crushed stone base materials at construction sites to polished stone counter tops and floor tiles.
Igneous rock composition chart: A chart that illustrates the generalized mineral composition of igneous rocks.
Gabbro rock usesBy studying this chart, you can see that gabbros and basalts are composed mainly of plagioclase feldspar, micas, amphiboles, and olivine.
What Minerals are in Gabbro?
Gabbro is composed mainly of calcium-rich plagioclasefeldspar (usually labradorite or bytownite) and pyroxenes (usually augite).
Minor amounts of olivine might also be present in the rock. (See composition chart on this page.)
This miner
- what type of rock is gabbro
- how is gabbro