Biogeochemical Patterns Associated With Mica Pegmatite of Nellore Mica Belt, Andhra Pradesh

The accumulation of elements in different organs of three plant species, viz., Azadirachta ladica, Ficus racemosa, Ficus hyspida and their associated surface soils occurring in the Nellore mica pegmatite belt were studied. Large amounts of Sr, Ba and B were noticed in the vegetation of the Nellore mica belt . Among these plant species, Azadiruchta indica (neem) has accumulated large amounts (2230 ppm) of Sr. Selectivity is the key factor for the uptake and accumulation of elements by plants. Species to species variation in the accumulation and tolerance was observed in the plants growing around mica mines. In their surrounding soils, large concentrations of Al, Fe, and La were noticed.