Definition

A type of rock that is mainly made up of quartz and mica, often found in certain regions like Cornwall and Saxony.

Example

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

Conversation

Have you ever seen a piece of greisen before?

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

It's a rock that's mostly quartz and mica, really interesting to look at.

That sounds cool! I’d love to find one on our next hike.

Synonyms & Antonyms

Root Explanation

The word 'greisen' originates from the German word 'Greis', meaning an old man or elder. It refers specifically to a type of coarse granite or a rock that is often associated with older geological formations.

Memory Tip

Think of the German word 'Greis' for an old man, which helps you remember that 'greisen' refers to an old or coarse type of rock.

Visually Confused Words