Gabbro is a coarse-grained (phaneritic) igneous rock that is relatively low in silica and rich in iron, magnesium, and calcium. Such rock is described as mafic. Gabbro is composed of pyroxene …

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 …

Nov 15, 2025 · Gabbro, any of several medium- or coarse-grained rocks that consist primarily of plagioclase feldspar and pyroxene. Essentially, gabbro is the intrusive (plutonic) equivalent of …

Gabbro is the intrusive equivalent of basalt, which is its extrusive counterpart formed from the same type of magma but cooled rapidly at the surface. Much of the Earth's oceanic crust is …

Feb 28, 2012 · What Is Gabbro? Gabbro is a coarse-grained and typically dark-colored igneous rock. It is one of the most common intrusive igneous rocks and plays a key role in the …

Gabbro is a plutonic igneous rock and the intrusive counterpart of basalt. The name ‘gabbro’ derives from the Italian town of Gabbro (Rosignano Marittimo, Tuscany) and was first coined …

Gabbro is a dense, coarse-grained igneous rock that forms deep beneath the Earth’s surface as slow-cooling magma solidifies. It shares the same composition as basalt but cools slowly …

Mar 6, 2025 · What is Gabbro? Gabbro is a coarse-grained, dark-colored igneous rock. It forms deep beneath the Earth's surface when magma cools slowly. This rock is rich in minerals like …

Type Igneous Rock Texture Phaneritic (Coarse-grained) Origin Intrusive/Plutonic Chemical Composition Mafic Color Dark Gray Mineral Composition Calcium Plagioclase, Pyroxene …

Apr 10, 2018 · Gabbro is a type of intrusive igneous rock that is coarse-grained and dark-colored, typically composed of calcium-rich plagioclase feldspar, pyroxene, and sometimes olivine. It is …