  We report on the experimental realization of a bosonic quantum degenerate
mixture of highly-magnetic 168Er and nonmagnetic 174Yb. Quantum degeneracy is
reached by forced evaporation in an all-optical trap. Formation of the two
Bose-Einstein condensates is confirmed by analysis of the cloud shape and the
observed inversions of the aspect ratios. The results open a path for possible
new experiments on magnetic and nonmagnetic impurity physics as well as on the
quantum chaotic behavior of Feshbach resonances and their dependencies on minor
variations of the reduced masses.
