The Chagai porphyry Cu belt in Pakistan is an important metallogenic terrain extending approximately 400 km in an east-west direction. Most of the known porphyry Cu deposits, such as the world-class Reko Diq deposit and Saindak deposit, are located in the western Chagai belt. In this study, the ZY1-02D hyperspectral data acquired by a recently launched spaceborne imaging spectrometer with 166 bands within a 0.4- to 2.5-μm spectral region were used to map mineral information over 8,000 km² for exploring potential targets of porphyry Cu mineralization in the western Chagai belt. False color composite, spectral angle mapper, and wavelength position mapping methods were used in this research leading to the identification of a series of alteration minerals (including muscovite [sericite], kaolinite, alunite, epidote, chlorite, and calcite) from ZY1-02D data. The alteration mineral maps derived from ZY1-02D data match well with the known deposits and field inspections. Twenty-three new targets were identified as potential porphyry Cu mineralization targets for further exploration in the study area. Three targets, north of Saindak, Koh-i-Sultan, and Durban Chah, and six alteration sites in the southwest of Durban Chah, were inspected in the field, and Cu-Au mineralization was confirmed in all these inspected areas. As the ZY1-02D hyperspectral data covers most of the land area of the earth, this study provides new insights for mineral exploration and lithologic mapping in remote regions.

中文翻译：

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使用 ZY1-02D 星载高光谱数据绘制巴基斯坦察盖带西部斑岩铜目标的蚀变图

巴基斯坦查盖斑岩铜矿带是重要的成矿地形，东西长约400公里。大多数已知的斑岩铜矿床，如世界级的Reko Diq 矿床和Saindak 矿床，都位于Chagai 矿带西部。本研究利用最近发射的星载成像光谱仪获得的ZY1-02D高光谱数据，在0.4~2.5μm光谱范围内有166个波段，绘制了超过8000 km ²的矿物信息图，用于探索斑岩铜矿化的潜在目标。西查盖带。本研究采用假色合成、光谱角度映射和波长位置映射方法，从 ZY1-02D 中鉴定出一系列蚀变矿物（包括白云母[绢云母]、高岭石、明矾石、绿帘石、绿泥石和方解石）数据。根据ZY1-02D数据得出的蚀变矿物图与已知矿床和现场检查非常吻合。研究区确定了 23 个新目标作为潜在的斑岩铜矿化目标，可供进一步勘探。对桑达克、科伊苏丹和德班查北部的三个目标以及德班查西南部的六个蚀变点进行了现场检查，所有这些检查区域均证实了铜金矿化。由于ZY1-02D高光谱数据覆盖了地球大部分陆地区域，该研究为偏远地区的矿产勘查和岩性测绘提供了新的见解。