It is named for the metabasic rock eclogite. But there are also lens shaped bodies consisting of eclogite and garnet amphibolite. Lamellar symplectites are common in retrogressed eclogite. This is made up of high-pressure metamorphic rocks, eclogite and blueschist. It is an uncommon constituent of eclogite. The rocks are characterized by prehnite-pumpellyite, blueschist or eclogite facies minerals. Plagioclase is not stable in eclogite. Antigorite Serpentine is another important water bearing phase that breaks down at eclogite facies conditions. Additionally, the relatively small outcrop of eclogite is important. At Eclogite facies conditions, plagioclase is no longer stable. However, eclogite and granulite are roughly equivalent mafic rocks. There are also incidences of gabbro and diorite, less commonly eclogite. Melting of eclogite to produce basalt directly is generally not supported in modern petrology. Beneath the Ronda Peridotites is an eclogite formed at a pressure of 1.5 GPa. Eclogite is denser than the surrounding asthenosphere.