Definition

A type of hard, fine-grained rock that is formed from the transformation of sedimentary rock, particularly shale, due to heat and pressure.

Example

The geologist collected samples of hornfels to study its mineral composition.

Conversation

Have you ever seen a piece of hornfels before?

No, I haven't! What does it look like?

It's a really cool, fine-grained rock that forms from metamorphism.

That sounds interesting! I’d love to learn more about it.

Synonyms & Antonyms

Root Explanation

Hornfels is derived from the German words "Horn" (meaning horn) and "Fels" (meaning rock). The term refers to a type of metamorphic rock that is hard and dense, resembling the texture of horn.

Memory Tip

Think of 'horn' as something hard and tough, and 'fels' as rock — this helps you remember that hornfels is a hard, rock-like material.

Visually Confused Words