Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite
From its occurrence at Litchfield, Maine, USA
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock