Eclogite
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Mineral NameEclogite
Chemical FormulaComplex silicate (rock)
Mohs Hardness6.5
Lustervitreous
Streak ColorWhite
CleavagePresent in omphacite (two directions at ~90 degrees), absent in pyrope.
FractureUneven to conchoidal
Specific Gravity3.3
Colorsgreen, red, pink
TransparencyTranslucent to opaque
Type LocalityWestern Gneiss Region, Norway
Mineral GroupMetamorphic Rock
Usesscientific study, geological research
Associated Mineralsomphacite, pyrope
Rarityuncommon
Description
A dense, coarse-grained metamorphic rock characterized by a striking green color from omphacite and red to pink from pyrope garnet, often with a granular texture.
Geological Context
Eclogite forms under extremely high pressures and temperatures, typically found in the Earth's mantle or in subducted oceanic crust within convergent plate boundaries, representing ultra-high pressure metamorphism.
