XRD analyses: drillcore, Northern Territory

Abstract

The objective of this study is mostly to determine the presence or absence of various minerals, or their more specific identity, in samples from these drillholes in the Northern Territory.

The XRD results generally confirm the presence of many of the mineral groups indicated by the IR methods, but in many cases the exact species cannot be determined. In some cases the Hylogger results have misidentified some major minerals, e.g. the TIR seems to identify orthoclase as microcline, and dolomite is mostly identified as ankerite. Quartz, dolomite and mixed layer clays appear to be generally missed and chlorite overestimated.