The present invention relates to the composition of calcite impregnated with chemical tracer, process for obtaining the same and process for identifying the origin of scale through mapping the tracer incorporated in the calcite, which is added to a viscous gel-based mattress. The present invention further comprises the use of said composition to identify the source of calcium carbonate scale in a well. Thus, it is possible to verify whether the origin of the calcium carbonate in the scale formed in the production column comes from the material injected into the well. Once this occurrence is confirmed, it is possible to plan ways to mitigate scale formation through material to combat circulation loss, thus avoiding production losses associated with scale formation.