Mafic - Wikipedia
A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine , …
Mafic - Simple English Wikipedia, the free encyclopedia
Mafic is an adjective describing a silicate mineral or igneous rock which is rich in magnesium and iron. The term is a portmanteau, made up from "magnesium" and "ferric". Mafic minerals are …
Gabbro - Wikipedia
Gabbro (/ ˈ ɡ æ b r oʊ / GAB-roh) is a phaneritic (coarse-grained and magnesium- and iron-rich), mafic intrusive igneous rock formed from the slow cooling magma into a holocrystalline mass …
Ultramafic rock - Wikipedia
Ultramafic rocks (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), …
Mafic - Wikiwand
A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, …
mafic - Wiktionary, the free dictionary
Sep 27, 2024 · mafic (comparative more mafic, superlative most mafic) Describing rocks, such as silicate minerals, magmas, and volcanic and intrusive igneous rocks, which contain relatively …
Mafic - Geology Wiki | Fandom
Mafic minerals and rocks are silicate minerals, magmas, and volcanic and intrusive igneous rocks that have relatively high concentrations of the heavier elements (See Chemistry Wiki The term …
Magma | Components, Types, & Facts | Britannica
Oct 9, 2024 · Basaltic (or mafic) magma predominates in nonexplosive volcanic eruptions. It is a high-temperature magma (1,200 °C [about 2,200 °F]) characterized by flowing lava, and it is …
mafic – An Introduction to Geology
Mafic rocks are darker in color and contain more minerals that are dark in color, but can contain some plagioclase feldspar. Primary mafic rocks are basalt (extrusive) and gabbro .
Diabase - Wikipedia
Diabase (/ ˈ d aɪ. ə ˌ b eɪ s /), also called dolerite (/ ˈ d ɒ l. ə ˌ r aɪ t /) or microgabbro, [1] is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.