Composition and origin of barite ores studied in Qerdaha
region. The fieldwork was done on geological sections belong to
Maastricht, from which many nodules like specimens were taken.
Both mineralogical and chemical composition of the
specimens w
ere determined using XRD. Petrological study was
done, as well.The mineralogical composition of most nodules
consisted of barite-calcite of various percentages. The nodules at
northern part of studied region consisted of barite or barite-calcite,
turned into calcite or calcite-barite phases towards south.
