Figure 2
Comparison of HRPXRD traces at 23°C for Pb apatites: (a) pyromorphite, (b) mimetite and (c) vanadinite together with the calculated (continuous line) and observed (crosses) profiles. The difference curve (Iobs – Icalc) with the same intensity scale is shown at the bottom of the trace. Short vertical lines indicate allowed reflection positions. The intensities for the trace and difference curve that are above 20° 2θ are multiplied by 5. The intensity scale for mimetite is ten times those for the other samples. |