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Lower Swat begins from the district of Buner on the border of Mardan to the south and spreads north to Bahrain. The valley has an elevation of 1000 to 5000 metres and is generally scenic, lush green, stepped with terraces, rivers and snow-clad mountains.
Emerald occur in carbonate-talc/ serpentine/chlorite rocks, carbonate-bearing talc schists, and associated quartz veins near Mingora.
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