The Dagh Dali Zn-Pb (±Au) hydrothermal prospect is located in the north-west of Iran. Identification of mineralized zones is essential in ore deposit exploration. Different methods have been developed and applied to separate mineralized zones from barren host rocks based on mineralogical and petrographical studies, alteration and host rock changes as well as statistical and geostatistical parameters. This study uses the ordinary kriging technique and the concentration-volume fractal (C-V) method to model the ore body and recognize the ore grade distribution. These techniques were applied on the drillcore data and C-V fractal modelling, values of various ore zones being determined. Four breakpoints were found in the log-log plots which correspond to concentrations of 5.4, 10.5, and 17.8 wt.% Zn. The extractable ore zone for Zn is considered to be in the concentration range of 5.4 to 17.8 wt.%. Compared to the amount of reserve obtained from the geostatistical method (303,685 tons), it seems that the fractal method is more precise and accurate in the estimation of ore reserves.

中文翻译：

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使用浓度-体积分形法在 Tagh Dali Zn-Pb (±Au) 勘探区（伊朗）北部的矿区划界

Dagh Dali Zn-Pb (±Au) 热液勘探区位于伊朗西北部。矿化带的识别对于矿床勘探至关重要。基于矿物学和岩相学研究、蚀变和主岩变化以及统计和地质统计参数，已经开发并应用了不同的方法来将矿化带与贫瘠的主岩分离。本研究采用普通克里金法和浓度-体积分形（CV）方法对矿体进行建模并识别矿石品位分布。这些技术应用于钻芯数据和 CV 分形建模，确定了各种矿区的值。在对应于 5.4、10.5 和 17.8 wt.% Zn 浓度的 log-log 图中发现了四个断点。锌的可提取矿区被认为在 5.4 至 17.8 wt.% 的浓度范围内。相较于地质统计学方法得出的储量（303,685吨），分形法在矿石储量的估算上似乎更为精准和准确。