Phaneritic and aphanitic similarities
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Aphanitic is a descriptive term for small crystals, and phaneritic for larger ones. Very coarse crystals (those larger than 3 centimetres, or 1.2 inches) are termed pegmatitic. In igneous rock.
Crystalline rocks with mineral grains that cannot be distinguished from one another without magnification have an aphanitic igneous texture. ... Intrusive igneous rocks thus have coarse-grained, or phaneritic, textures with visible crystals, and extrusive igneous rocks have fine-grained, or aphanitic, texture.
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