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We demonstrate that inelastic neutron scattering technique can be used to indirectly detect and measure the macroscopic quantum correlations quantified by both entanglement and discord in a quantum magnetic material,VODPO4·O.5D2O.The amount of quantum correlations is obtained by analyzing the neutron scattering data of magnetic excitations in isolated V4+Spin dimers.Our quantitative analysis shows that the critical temperature of this materials can reach as high as Tc=82.5 K,where quantum entanglement drops to zero.Significantly,quantum discord can even survive at Tc=300 K and may be used in room temperature quantum devices.Taking into account the spin-orbit(SO)coupling,we also predict theoretically that entanglement can be significantly enhanced and the critical temperature Tc increases with the strength of spin-orbit coupling.