Carbon dioxide sequestered proppants for well stimulation

A method of stimulating a well comprising injecting a hydraulic fracturing slurry into the well, the hydraulic fracturing slurry comprising:

• hydraulic fracturing fluid;
• and
• a proppant composition comprising 50% or more by weight of silica sand particles and up to 50% by weight of calcium carbonate coated particles having a diameter in a range of 140 mesh to 70 mesh, the calcium carbonate coated particles comprising a substrate, the substrate having a hardness less than silica sand, and a coating of calcium carbonate comprising sequestered carbon dioxide, whereby the diameter of the calcium carbonate coated particles and the hardness of the substrate cause the proppant composition to be concentrated at one end of fractures in the well.