Cumulate rock
Videos
Cumulate rocks are igneous rocks formed by the accumulation of crystals from a magma either by settling or floating. Cumulate rocks are named according to their texture; cumulate texture is diagnostic
Close-up view of a cumulate rock from Montana (scale: about 45 millimetres (1+3⁄4 in) across)
Layers of cumulate rock (gabbro) in Oman
Dark layers of chromite-rich cumulate rock alternating with light layers of plagioclase-rich rock in the Bushveld Igneous Complex, South Africa
Gabbro
Videos
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