Discovery of Blue Beryl from Ilum Granite and its Implications on the Genesis of Emerald Mineralization in Swat District
Abstract
Geological mapping of toposheet 43 B/6 in Buner Valley, District Swat is presented. Petrographic and mineralogical data on veins associated with Ilum granite have revealed a complex assemblage produced by multiphase hydrothermal activity. Some of these veins have been cataclastically deformed alongwith the granite body, whereas others show minor or no cataclasis and me hosted in post-cataclasis joints.
A genetic relationship between the granite and associated veins is proposed from field criteria. Hydrothermal veins associated with Ilum granite contain blue beryl. A granitic source for the beryl and possibly for spatially associated emerald mineralization is postulated.
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