Definition

A type of volcanic rock that is usually gray and has a fine texture, mainly made up of minerals like plagioclase and feldspar.

Example

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

Conversation

Did you know that andesite is a type of volcanic rock?

Really? I had no idea rocks could be so interesting!

Yeah, it’s mostly made up of plagioclase and feldspar.

That's cool! I should learn more about geology.

Synonyms & Antonyms

Root Explanation

Andesite is derived from 'Andes' (the name of the mountain range in South America) and the suffix '-ite' (meaning a mineral or rock). The word refers to a type of volcanic rock that is commonly found in the Andes mountains.

Memory Tip

Think of the Andes mountains where this volcanic rock is commonly found, and remember that 'andesite' is a rock associated with that region.

Visually Confused Words