UTILIZATION OF MARBLE SLURRY TO ENHANCE SOIL FERTILITY AND TO PROTECT ENVIRONMENT
Keywords:
Minerals, macronutrients, micronutrients, XRF analysis, rare earth elementsAbstract
Rajasthan is a rocky state having oldest Aravali ranges, which are very rich in diverse
minerals, particularly dolomite, granite and marble. Hence, so many industries in
Rajasthan are based on these rocks. However, during mechanical processing of these
minerals, about 30%-40% part is left as a waste in the form of slurry. These mineral
wastes could be used as a source of macro and micronutrients for soil. XRF analysis
was done to evaluate the composition of marble slurry. Result of XRF revealed that
30.52% of calcium, 9.95% of magnesium, 1.57% of iron, 0.05% of potassium, 0.09% of
phosphorous and 0.07% of manganese present in it. XRF analysis of marble waste also
showed the presence of ultra micro nutrients and REEs (Rare Earth Elements). It is
found to be an effective combination to provide macro and micro nutrients for soil.
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