EDX measurements of element concentrations in Durango apatite at different working distances (WD). Here the optimal WD as reported by the manufacturer, is from 11.5 mm to 12.5 mm.
Original data concerning the content of 39 elements (Na. Mg. Al. Ca. Si. K. Mn. Fe Sc. Ti. V. Cr. Co. Ni. Zn. As. Br. Rb. Sr. Zr. Mo. Cd. Sb. Cs. Ba. La. Ce. Nd. Sm. Eu. Tb. Dy. Tm. Yb. Hf. Ta. W. Th
