  In the present work, some density estimations associated with vector-valued
quasi-Ahlfors measures are developed within the mixed multifractal analysis
framework. The principle idea based on the fact that being quasi-Ahlfors is
sufficient to conduct a mixed multifractal analysis for vector-valued measures.
In the present work, we introduced a multifractal density for finitely many
measures and showed that such density may be estimated well by means of the
mixed multifractal measures. Such estimation induces an exact computation of
the multifractal spectrum of the vector-valued quasi-Ahlfors measure.
