igneous
Pegmatite
Igneous Pegmatite
AI-generated identification · may be incorrectHardness ranges from 6 to 7 on the Mohs scale, with a vitreous to pearly luster and interlocking very large crystals.
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Physical properties
Hardness ranges from 6 to 7 on the Mohs scale, with a vitreous to pearly luster and interlocking very large crystals.
Formation & geological history
Formed from the slow crystallization of cooling magma deep within the Earth's crust, often enriched in rare elements.
Uses & applications
Used as a primary source for rare minerals, gem-quality crystals, and industrial components like lithium and feldspar.
Geological facts
Pegmatites can host some of the largest individual crystal specimens ever found, sometimes exceeding several meters in length.
Field identification & locations
Identify by exceptionally large mineral grains visible to the naked eye, commonly found near large granitic plutons worldwide.
