Definition

A type of light-colored rock that is formed from cooled magma and mainly contains feldspar and quartz.

Example

The geologist collected a sample of felsite to study its mineral composition.

Conversation

Have you ever seen a piece of felsite before?

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

It's this light-colored rock that's mostly made of feldspar and quartz.

That sounds interesting! I’d love to check it out sometime.

Synonyms & Antonyms

Root Explanation

Felsite is derived from the German word 'Fels' (meaning rock) combined with the suffix '-ite' (used to denote minerals or rocks). Thus, felsite refers to a type of rock that is fine-grained and typically light-colored, resembling granite.

Memory Tip

Think of 'Fels' meaning rock, and remember that 'felsite' is a type of rock that is fine-grained and light-colored.

Visually Confused Words