Abstract:
Jiadi Gold Deposit ranks as the 5th largest gold deposit in Guizhou Province and is the largest primary gold deposit discovered in basalt across China to date. To reveal the metallogenic geological conditions, deposit geological characteristics, and metallogenic geological processes in the area, this paper reviewed the prospecting process of Jiadi Gold Deposit and conducted a comprehensive analysis of the main research results. The results show that: ① Jiadi Gold Deposit is controlled by the secondary flexural folds on the southeast flank of Lianhuashan Anticline, with a burial depth of 30–320 m. It is a concealed super-large Carlin-type gold deposit, with proven gold resources of 57 t. ② Pyrite formed during the metallogenic period is divided into zoned pyrite and pyrite with a homogeneous structure; the latter is similar to the outer zone of the former in terms of composition and genesis. ③ There were two episodes of hydrothermal activity (Indosinian and Yanshanian) in the Jiadi Gold Deposit. The mineralization is dominated by Yanshanian hydrothermal fluids, while the Indosinian hydrothermal activity is likely unrelated to gold mineralization. ④ The ore-forming fluids and materials of Jiadi Gold Deposit are related to deep-source magma. ⑤ The linear volcanic structures formed during the Emeishan Basalt Grope eruption period may exert a certain controlling effect on the ore bodies. The above prospecting progress and research results can provide support and reference for further prospecting in the area.