igneous
Pegmatite
Granite Pegmatite
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale; pink and white coloration with dark mineral inclusions; coarse-grained texture with large crystals; vitreous luster.
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Physical properties
Hardness of 6-7 on Mohs scale; pink and white coloration with dark mineral inclusions; coarse-grained texture with large crystals; vitreous luster.
Formation & geological history
Formed from the slow crystallization of magma deep within the Earth's crust, often enriched in rare elements and volatile components.
Uses & applications
Used as a primary source for rare earth elements, lithium, gemstones, and industrial minerals like quartz and feldspar.
Geological facts
Pegmatites can host some of the largest individual crystals ever found on Earth, sometimes measuring many meters in length.
Field identification & locations
Easily identified by its extremely coarse grain size and presence of interlocking crystals. Found globally in major mountain belts and ancient cratons.
