Gabbro
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Gabbro is a phaneritic, mafic, intrusive igneous rock formed from the slow cooling magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro has the same
Gabbro specimen from Duluth, Minnesota
Photomicrograph of a thin section of gabbro
A gabbro landscape – the main ridge of the Cuillin, Isle of Skye, Scotland
Cizlakite sample
Mafic
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Mafic is a term used in geology to describe silicate minerals, magmas, and igneous rocks that are rich in magnesium and iron, while being relatively low in silica content. Common rock-forming mafic mi
Gabbro
…Gabbro ( GAB-roh) is a phaneritic (coarse-grained), mafic (magnesium- and iron-rich), intrusive igneous rock formed from the slow cooling magma into a holocrystalline mass deep beneath the Earth's surface…
Basalt
Apatite
An ʻaʻā flow from Mauna Loa (a volcano in Hawaii), composed of mafic magma.