Quartzite is a non-foliated metamorphic rock that originates from the metamorphism of pure quartz sandstone. Known for its remarkable hardness and durability, quartzite typically displays …

Hornfels is a non-foliated metamorphic rock characterized by its fine-grained, dense, and hard texture. This rock type forms under high-pressure and moderate-temperature conditions during the …

Greenstone is a metamorphic rock that belongs to the greenschist facies, a sub-class of low-grade metamorphic rocks. It is characterized by its greenish hue, which …

Granulite is a high-grade metamorphic rock, belonging to the granulite facies, that forms under extreme heat and pressure within the Earth’s crust. This rock exhibits …

Anthracite is a type of metamorphic rock that belongs to the coal family, ranking as the highest-grade coal due to its high carbon content and …