Definition

A type of rock that is green in color, often formed from changes in basic igneous rocks due to minerals like chlorite, hornblende, or epidote.

Example

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

Conversation

I found this beautiful piece of greenstone at the market yesterday.

That sounds interesting! What does it look like?

It's a deep green color with some unique patterns.

I love those kinds of stones; they always have such character!

Synonyms & Antonyms

Root Explanation

Greenstone is formed from "green" (from Old English "grene", meaning of the color between blue and yellow) and "stone" (from Old English "stan", meaning a solid mineral matter). The word "greenstone" refers to a type of stone that is green in color.

Memory Tip

Think of the color 'green' and 'stone' as a solid mineral — that's why greenstone refers to a type of stone that is green.

Visually Confused Words