The dependence of shear-flocculation on surface coverage and zeta potential is elucidated using a model system of fluorite/scheelite/oleate. The experiments carried out were (1) shear-flocculation, (2) oleate adsorption/abstraction, (3) flotation of the shear flocs, (4) zeta potential, and (5) turbidity. At a sufficiently high constant shear both an increase in surface coverage and a decrease in zeta potential lead to an increase in the amount of shear flocculating. Manipulation of these two factors permits the turbidity to be reduced from as high as 450 NTU (Θ(surface coverage) = .5; ζ (zeta potential) = -40 mV) to as low as 40 NTU (Θ= 1.2; ζ = -29 mV) in the case of scheelite. With fluorite, turbidity drop is from 120 NTU (Θ= 1; ζ= -40 mV) to 20 NTU (Θ= 1.5; ζ= -19 mV). A close relationship exists between the turbidity measurements and the amount of shear flocculating in percentage. The total flotation of the shear flocs is possible at apparent surface coverages corresponding to a partly formed bilayer