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Eclogite

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About EclogiteHide

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.


Classification of EclogiteHide

Sub-divisions of EclogiteHide

Mineralogy of EclogiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Garnet GroupX3Z2(SiO4)3
Pyroxene > Clinopyroxene > Omphacite(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
KyaniteAl2(SiO4)O
ParagoniteNaAl2(AlSi3O10)(OH)2
Pyroxene > OrthopyroxeneA petrological term for Orthopyroxene Subgroup.
RutileTiO2
Silica > QuartzSiO2

Pronounciation of EclogiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

References for EclogiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
White, A.J.R. (1964) Clinopyroxenes from eclogites and basic granulites. American Mineralogist, vol. 49, 883-888.
Gebauer, D. (1990) Isotopic systems - geochronology of eclogites. in Carswell, D.A. (Ed.) Eclogite facies rocks. Blackie, Glasgow, p. 141-159.
Fettes et al. (2007) Metamorphic Rocks - A Classification and Glossary of Terms. Cambridge University Press.

Internet Links for EclogiteHide

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