Last year's X(3872) discovery was confirmed with the CDF II
detector in p anti-p collisions. We measure its mass to be 3871.3 +/- 0.7 +/-
0.4 MeV/c2. The source of X-mesons in the large CDF sample is resolved by
studying their vertex displacement. We find 16.1 +/- 4.9 +/- 2.0% of our
X-sample comes from decays of b-hadrons, and the remainder from prompt
sources: either direct production or by decay of (unknown) short-lived
particles. The mix of production sources is similar to that observed for
the psi(2S) charmonium state.