Identification and Separation of Anomall Variable Using Correspondence and Discriminant Analyses Methods at Northern- Dalli Area

Urumieh–Dokhtar volcanic belt is considered as potential area of mineralization that includes majority of porphyry-type mineralization in Iran. According to the satellite imagery، regional visits and samples which were taken from Dalli، this area was introduced as an occurrence with high potential for the mineralization. 149 geochemical samples from secondary lithogeochemical environments (soil) have been studied in the current paper. Correspondence analysis and discrimination analysis are used as statistical methods to identify mineralization type and associated elements with mineralization. Reduction of data volume، identification the anomaly and evaluation of enriched and depleted element are important purposes from application of these methods. In the correspondence analysis the mineralization variables (elements) and samples were simultaneously identified. According to this survey، some of the samples such as 86، 46، 74، 22، 40، 84 and a number of other samples have emphasized a Cu-Au anomaly. In the discrimination analysis according to proven mineralization (Cu-Au) in area and previous result، Co concentration was shown a correlation with Cu-Au mineralization and La، Na and Mg are probably depleted in mineralization area. In the correspondence analysis، elements of K، Fe، Ti، and to some extent Ba almost were enriched in the Cu-Au mineralized area and elements As، Sr، Ca، Li، Na and some other were depleted.