  We present experimental features of identified particle production from
nucleus-nucleus collisions at RHIC. These features reflect hadronization from a
deconfined partonic matter whose particle formation scheme is distinctly
different from fragmentation phenomenology in elementary collisions.
Multi-parton dynamics, such as quark coalescences or recombinations, appear to
be essential to explain the experimental measurements at the intermediate
transverse momentum of 2-5 GeV/c. Constituent quarks seem to be the dominant
degrees of freedom at hadronization and gluon degrees of freedom are not
explicitly manifested in the hadronization scheme. This physical scenario is
consistent with recent Lattice QCD calculations that near the critical
temperature hadrons do not melt completely and quasi-particles may provide an
effective degrees of freedom to describe the partonic matter. Heavy quark
production and other future experimental measurements to quantify the QCD
properties of the produced matter at RHIC will be discussed.
