Definition

A type of granite that has large crystals and often contains rare minerals, usually found in veins or dikes.

Example

The geologist discovered a pegmatite rich in rare minerals during the expedition.

Conversation

Did you know that some rocks contain a mineral called pegmatite?

Really? What makes it so special?

Well, pegmatite can be rich in rare elements like uranium and tungsten.

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

Synonyms & Antonyms

Root Explanation

Pegmatite → The word is derived from the Greek "pegma" (meaning something fastened or a bond) and the suffix "-ite" (used to denote minerals or rocks). Pegmatite refers to a type of rock that is characterized by its large crystal sizes, suggesting a strong bond or fastening of minerals together in a unique formation.

Memory Tip

Imagine a rock with large crystals that are 'fastened' together — 'pegma' means something fastened, and '-ite' indicates it's a type of rock. This helps you remember that pegmatite is a rock with large, bonded crystals.

Visually Confused Words