WebApr 15, 2024 · What is the aphanitic equivalent of gabbro? Basalt. Basalt is the aphanitic (fine-textured) extrusive equivalent of gabbro. From the Latin word “pumex”, meaning “pumice”. A vesicular, glassy volcanic rock, generally of rhyolite composition (felsic). Often light in color. Is gabbro an aphanitic? Gabbro is distinct from anorthosite, which ... WebApr 10, 2024 · QAPF modal classification of plutonic rocks (based on Streckeisen, 1976, Fig. 1a). Diorite, gabbro, anorthosite — the three root …

Hornblende gabbro - Wikipedia

WebExamples of phaneritic igneous rocks are gabbro, diorite and granite. Porphyritic textures develop when conditions during cooling of a magma change relatively quickly. The earlier formed minerals will have formed slowly and remain as large crystals, whereas, sudden cooling causes the rapid crystallization of the remainder of the melt into a fine grained … Gabbro is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is chemically equivalent to rapid-cooling, fine-grained basalt. Much of the … See more The term "gabbro" was used in the 1760s to name a set of rock types that were found in the ophiolites of the Apennine Mountains in Italy. It was named after Gabbro, a hamlet near Rosignano Marittimo See more Gabbro often contains valuable amounts of chromium, nickel, cobalt, gold, silver, platinum, and copper sulfides. For example, the See more • Ocean drilling program gabbro petrology • Scientists find the elusive gabbro See more Gabbro is a coarse-grained (phaneritic) igneous rock that is relatively low in silica and rich in iron, magnesium, and calcium. Such rock is … See more Nearly all gabbros are found in plutonic bodies, and the term (as the International Union of Geological Sciences recommends) is normally restricted just to plutonic rocks, … See more • Peridotite – Coarse-grained ultramafic igneous rock type • Igneous differentiation – Geologic process in formation of some igneous rocks See more harolyn suzanne nicholas wikipedia

6 Igneous Rocks and Silicate Minerals – Mineralogy - OpenGeology

WebHornblende gabbro is an intrusive rock similar to normal gabbro (gabbro sensu stricto). In … WebMar 28, 2024 · Gabbro is the most abundant rock in the deep oceanic crust, but this fined-grained version is found in Madagascar and mined primarily for the metaphysical trade. Most other Gabbro is used in the construction industry. Indigo Gabbro has been marketed as a trademarked entity called Mystic Merlinite. Webaphanitic version of gabbro. basalt. aphanitic version of granite. rhyolite. Slate parent … harolyn suzanne nicholas cause of death