Hornfels are used in a number of applications like in the field of construction and landscaping. It is used a road base and may also be used as a decorative rocks in gardens. In the olden times, it is used as a tool like scrapers and knives.
Hornfels may be used during construction projects or in the building of roadways. They may also be used as whetstones.
hornfels is a rock or mineral
hornfels is red
I too would like an answer to this question as it seems hornfels could be of varying grade dependant on the temperature. The facies of contact metamorphism progress in temperature at relatively low pressure from the Albite-Epidote Hornfels Facies to the Hornblende Hornfels Facies, to the Pyroxene Hornfels Facies. It seems that hornfels do have differant grades.
Typically an opaque green, greenish-brown, brown or black color.
Sandstone
Metamorphic.
it has been on earth forever
it is found in Mexico
Hornfels is a type of rock that is metamorphic. They usually have bands and fine grain, and can come in different colors, such as light gray and dark gray.
Hornfels is formed when mudstone or shale come in contact with a hot igneous body and metamorphic rock. This process is called contact metamorphism.
outside its everywhere you go (you drive on it)