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
  Fluorescent Minerals
  Tumbled Stones
  Rock, Mineral and Fossil Collections.
  Lapis Lazuli
  The Rock Used to Make Beer
  Quartzite
  Difficult Rocks
  A Grain of Sand

geology store

More From Geology.com:


Gems from Space
Gems from Space A number of materials from space have been used as attractive gems.
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?
rocks
Rock Gallery: Photos of igneous, sedimentary and metamorphic rocks.
Plate Tectoncs
Zoom in on Plate Boundaries: See the details of plate tectonics in satellite view.
Canadian Diamonds
Canadian Diamond Mines produce some of the largest and highest quality gems!
Meteorites
Meteorites - Rocks that were once parts of planets or large asteroids.
glaciers
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
The Largest Tsunami!
The Largest Tsunami! The tsunami with the highest run-up was in Lituya Bay, Alaska.