Abstarct: Urmia-Dokhtar arc is located in the form of volcanic- intrusion belt in the southwest of Sanandaj-Sirjan Zone. Important porphyry copper deposits such as Sungun, Dalli, Sarcheshmeh, Kahang, Masjed Daghi, Meiduk, Mazraeh and Chahar Gonbad are located within this arc. Detection of blind mineralization in this arc is needed optimum methods. Delination of lithogeochemical anomalies, exploration of multiformation anomalies and detection of exploration drilling point are the important problem in mineral exploration. Mining geochemistry and geochemical models baxsed on zonality method has been used for detection of blind mineralization. In this theses two new methods are presented for detection of blind mineralization. Singularity of zonality index and concentration gradient model of pathfinder elements were done in geochemical anomalies of Urmia-Dokhtar arc. Concentration gradient has used as a new method for exploration of blind mineralization and detection of them from zone dispersed mineralization. Also singularity of zonality index has used for detection of enrichment of zonality index. The advantage of concentration gradient is presentation of the same result as the zonality index without the need for comparison with the similar type of deposit. These methods are tested in two part of Urmia-Dokhtar arc (Arasbaran zone and Kerman zone). Sungun as a known blind mineralization zone and Astamal as a zone dispersed mineralization zone (in Arasbaran) were investigated and pattern was concluded. Then this pattern was investigated in Jebal Barez and Kerver in Kerman zone. According to the singularity of zonality method, locations that singularity of zonality of them are lower than 2 (α<2) show enrichment of zonality index. Others cases as α>2, show depletion in zonality index. Aslo, baxsed on the concentration gradient, if the concentration gradient average for supra-ore elements are higher than the value for sub-ore elements, the anomaly will be BM, and otherwise anomaly is ZDM.