metamorphic
Eclogite
Eclogite (Omphacite and Pyrope-Almandine Garnet)
AI-generated identification · may be incorrectHardness of 6.5-7.5, distinct red garnet crystals embedded in a green pyroxene-rich matrix, subvitreous luster, and high specific gravity.
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Physical properties
Hardness of 6.5-7.5, distinct red garnet crystals embedded in a green pyroxene-rich matrix, subvitreous luster, and high specific gravity.
Formation & geological history
Formed by ultra-high-pressure metamorphism of basalt or gabbro deep within the Earth's mantle during subduction zone processes.
Uses & applications
Used primarily in scientific research to study deep mantle dynamics and subduction processes; occasionally cut for lapidary display.
Geological facts
Eclogite is a relatively rare rock type because it requires extreme pressures to form and rapid exhumation to survive without retrograding into lower-pressure assemblages.
Field identification & locations
Identify by the striking contrast of blood-red garnet within vibrant green omphacite; commonly found in ancient suture zones and orogenic belts.
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