Scoria
Class: Igneous Rocks
Texture: Vesicular
Appearance: Glassy and Vesicular
Medium hardness rocks fall in the middle range of the Mohs hardness scale. They include a mix of igneous, sedimentary, and metamorphic rocks. These rocks are used in various applications including construction, flooring, and decorative purposes.
Class: Igneous Rocks
Texture: Vesicular
Appearance: Glassy and Vesicular

Class: Igneous Rocks
Texture: Foliated, Glassy
Appearance: Layered, Banded, Veined and Shiny

Class: Igneous Rocks
Texture: Phaneritic
Appearance: Rough and Shiny

Class: Igneous Rocks
Texture: Earthy
Appearance: Banded and Foliated
Class: Igneous Rocks
Texture: Phaneritic
Appearance: Rough and Shiny
Class: Igneous Rocks
Texture: Aphanitic to Porphyritic
Appearance: Banded
Class: Igneous Rocks
Texture: Granular
Appearance: Banded and Foliated
Class: Igneous Rocks
Texture: Glassy, Massive, Porphyritic
Appearance: Dull and Soft

Class: Igneous Rocks
Texture: Glassy
Appearance: Soft and Shiny

Class: Metamorphic Rocks
Texture: Banded, Foliated, Massive
Appearance: Foliated
Sandstone, Limestone, Dolomite, Greywacke, Arkose, Siltstone, Gneiss, Schist.
Compare with Hard Rocks and Soft Rocks.