Eclogite from Erzgebirge

A thin section of rock from the Saidenbach Resevoir, Erzgebirge, Saxony, Germany. This area is known for its extreme high pressure rocks, of which Eclogite is probably the best known. This slide is an excellent example which shows the characteristic minerals, omphacite, garnet and quartz, in clear and non-retrograde form. Small inclusions of quartz in the garnet and omphacite are described as being originally coesite, the ultra high pressure/tempertaure form of silica. Dark red/brown grains of rutile.
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