Be-Ta-Nb-Li-Cs-Rb-rich pegmatite veins, hosted in schists, diorite, gneiss or granite. The veins hosted in schists are tens to hundreds of meters long and up to 5 m thick, while those hosted in diorite are more than 2 km long and up to 20 m thick.
References
- Bariand, P. and Poullen, J.F. (1978). Famous mineral localities: The pegmatites of Laghman - Nuristan - Afghanistan. Mineralogical Record. 9: 301-308.
- Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110.
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