Mapping Hydrothermally Altered Minerals and Gossans using Hyperspectral data in Eastern Kumaon Himalaya, India

Applied Computing and Geosciences

Gaurav Mishra¹  Ajay Taloor²  Himanshu Govil³  Neetu Gill³  P. Diwan⁴ 

[1] Corresponding author.;Chhattisgarh Council of Science and Technology, India;Department of Applied Geology, National Institute of Technology Raipur, 492010, Chhattisgarh, India;Department of Remote Sensing and GIS, University of Jammu, Jammu, 180006, India;

关键词: Hyperion;    Hydrothermal alteration;    Altered mineral;    Gossan;    Kumaon Himalaya;   

DOI  :  

来源: DOAJ

【 摘 要 】

Identification and delineation of alteration minerals and regolith play an important role in the discrimination of metallic and non-metallic minerals and are also significant for metallic and non-metallic mineralization zone identification. In this work, altered minerals and gossans have been identified in and around the Askot area in eastern Kumaon Himalaya using hyperspectral data. Analysis of the Hyperion data indicates alteration minerals in the alteration zones surrounding the Askot sulfide orebody. These minerals include alunite, axinite, illite, and pyrite. Besides, iron bearing minerals such as goethite and hematite are found in the gossans. These gossans are formed by surface weathering of sulfide orebodies and found in a northeast direction along the strike of the Askot orebody. Field surveys in two target prospective mineralized zones confirm the presence of gossan and altered minerals identified via the Hyperion hyperspectral data. This study demonstrates the ability of hyperspectral data and field investigations to identify hydrothermal alteration minerals, gossans, and potential mineralized zones in the Himalaya.

【 授权许可】

Unknown