igneous
Pegmatite
Igneous Pegmatite
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, coarse-grained texture with interlocking crystals, white to pink color, vitreous luster.
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Physical properties
Hardness of 6-7 on Mohs scale, coarse-grained texture with interlocking crystals, white to pink color, vitreous luster.
Formation & geological history
Formed from the cooling of water-rich magma deep within the Earth's crust during the late stages of crystallization.
Uses & applications
Source of rare earth elements, gemstones, and industrial minerals like quartz, feldspar, and mica.
Geological facts
Pegmatites can contain exceptionally large crystals, sometimes growing to several meters in length.
Field identification & locations
Identify by its extremely large crystal size compared to standard granite; commonly found in ancient mountain belts.
