menu

Home » Rocks » Metamorphic Rocks » Hornfels

Hornfels


A metamorphic rock without foliation.


Hornfels

Hornfels: The specimen shown is about two inches (five centimeters) across.

What is Hornfels?

Hornfels is a fine-grained nonfoliated metamorphic rock with no specific composition. It is produced by contact metamorphism. Hornfels is a rock that was "baked" while near a heat source such as a magma chamber, sill, or dike.




Rock kit

Rock & Mineral Kits: Get a rock, mineral, or fossil kit to learn more about Earth materials. The best way to learn about rocks is to have specimens available for testing and examination.



More Rocks
  Lapis Lazuli
  Fluorescent Minerals
  Gifts that Rock!
  Caliche
  Tumbled Stones
  Quartzite
  Geodes
  The Rock Used to Make Beer

geology store

More From Geology.com:


Waterproof Paper
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Minerals
Minerals: Information about ore minerals, gem materials and rock-forming minerals.
rocks
Rock Gallery: Photos of igneous, sedimentary and metamorphic rocks.
Fluorescent Minerals
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
US Diamond Mines
US Diamond Mines: Did you know that diamonds can be found in the United States?
Tanzanite
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Quartzite
Quartzite: a nonfoliated metamorphic rock composed almost entirely of quartz.
Mount Cleveland
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.