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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sushmita
Igneous rock (pegmatite) with more than 3 cm large crystals, this texture/ structure is found in intrusive rocks. The extra large size does not mean that they cooled extra slowly(large crystals in igneous rocks are usually attributes to slow rate of crystallization but pegmatite is quite different). Instead, the large crystals of a pegmatite formed in magma that was extra rich in dissolved water.