How to identify it?
Color
Pegmatite is mainly composed of white or gray quartz, and pink or white feldspar.
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Texture
Crystal size is the most striking feature of pegmatites, with crystals usually over 2.5 cm in length. Pegmatite sometimes has a graphic texture - intimate intergrowth of alkali feldspar and quartz looks like ancient cuneiform writing when viewed in certain cross sections.
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