About 22,900 results
Open links in new tab
  1. Gabbro - Wikipedia

    Gabbro is a coarse-grained 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 (mostly clinopyroxene) and calcium-rich plagioclase, with minor amounts of hornblende, olivine, orthopyroxene and accessory minerals. [4]

  2. Gabbro | Properties, Formation, Composition, Uses - Geology …

    Sep 4, 2023 · 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 similar in composition to basalt, which is its extrusive equivalent.

  3. Gabbro: Igneous Rock - Pictures, Definition & More - Geology.com

    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 the most abundant rock in the deep oceanic crust. Gabbro has a variety of uses in the construction industry.

  4. Gabbro | Igneous Rock, Mafic Minerals & Plutonic Intrusions

    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 basalt, but whereas basalt is often remarkably homogeneous in …

  5. Gabbro: Composition, Types, Properties, Uses – Geology In

    Gabbro is a coarse-grained, dark-colored intrusive igneous rock that forms from the slow cooling and crystallization of mafic magma beneath the Earth's surface. It is composed primarily of calcium-rich plagioclase feldspar and pyroxene minerals (such as augite), with smaller amounts of olivine and amphibole.

  6. Granite Vs Gabbro: Similarities and Differences – Geology In

    Granite and gabbro are both intrusive igneous rocks, meaning that they formed from magma that cooled and solidified slowly beneath the Earth's surface. However, they differ in their mineral composition and physical properties.

  7. Gabbro: A Coarse-grained, Dark-Colored Plutonic Rock

    Jul 21, 2023 · Gabbro is a dense, coarse-grained, dark-colored, mostly plutonic rock. Its essential minerals are calcic plagioclase and pyroxene, but it may have minor amounts of amphibole, olivine, and other minerals.

  8. Gabbro: The Intriguing Coarse-Grained Igneous Rock ... - Rock …

    Aug 3, 2024 · 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 enough for its minerals to grow large and become visible to the naked eye.

  9. Gabbro: Identification, Pictures & Info for Rockhounds

    Gabbro is an intrusive igneous rock composed primarily of plagioclase feldspar and large amounts of mafic minerals like pyroxene. It has a phaneritic texture, meaning its interlocking crystals can be seen with the naked eye. It is usually dark gray, black, or …

  10. Gabbro - Geology is the Way

    Gabbro is a plutonic igneous rock and the intrusive counterpart of basalt. Gabbros are essentially constituted by Calcium-rich plagioclase (>An50), clinopyroxene (augite, diopside), and iron oxides (ilmenite, magnetite) and may contain accessory olivine, amphibole, orthopyroxene, and spinel.

  11. Some results have been removed
Refresh