Eclogite ( / ˈɛklədʒaɪt /) is a metamorphic rock containing garnet (almandine - pyrope) hosted in a matrix of sodium -rich pyroxene (omphacite). Accessory minerals include kyanite, rutile, quartz, lawsonite, coesite, amphibole, phengite, paragonite, …

Eclogite is a metamorphic rock consisting of pyroxene omphacite and pyrope-rich garnet. It is a rare but geologically significant rock type. It is common in the upper mantle, especially in regions occupied by subducted oceanic plates.

eclogite, any member of a small group of igneous and metamorphic rocks whose composition is similar to that of basalt. Eclogites consist primarily of green pyroxene (omphacite) and red garnet (pyrope), with small amounts of various other stable minerals—e.g., rutile. They are formed when volcanic or metamorphic rocks rich in such mafic ...

Mar 3, 2016 · Eclogites are high pressure and high temperature metamorphic rocks found at various locations originating from different types of formations. Although their essential mineralogy is quite simple,...

A high P/T metamorphic rock composed of more than 75% vol. garnet (often pyrope or Mg-rich almandine) and omphacite (Na-Ca-Al-Mg clinopyroxene). Both must be present and neither component more than 75% vol. Eclogite never contains plagioclase. Rutile, kyanite, and quartz are typically present. May be confused with garnet clinopyroxenite.

Feb 8, 2024 · The term eclogite means ‘chosen rock’, a thoroughly deserved denomination, which Haüy based on the peculiar binary mineral assemblage of garnet and clinopyroxene, described in his Traité de minéralogie. Yet before Haüy, eclogites were described by various other geologists but with different names.

Eclogite is an unusually dense metamorphic rock, typically of basaltic composition, that represents a recorder and/or driving force for planetary-scale processes and evolution. Eclogite-facies metamorphic conditions encompass a wide range of pressure–temperature space from deep crustal to mantle depths, reflecting tectonic setting.

Jan 2, 2019 · Eclogite is an important high-pressure metamorphic rock and mainly forms from basalt or gabbro in the subducting slab (Ringwood, 1982). Eclogite is mainly composed of garnet and omphacite and plays a key role in mantle convection due to its relatively high density (Anderson, 2006; Aoki & Takahashi, 2004; Irifune et al., 1986).

Jan 12, 2023 · Eclogite is a type of metamorphic rock with distinct mineral composition and texture, typically formed under high-pressure and high-temperature conditions deep within the Earth’s crust. The name “eclogite” is derived from the Greek words “eklogē,” meaning selection or choice, and “lithos,” meaning rock.

Eclogites are rather rare rocks occurring as relatively small intercalations, lenses, boudins, or enclosures within various hosts.