Geological Position and Gold-Bismuth Mineralization of the Namovskoye Deposit (Southern Sikdote-Alin)

Research on the Namovskoye deposit in Southern Sikhote-Alin reveals that its gold-bismuth mineralization is linked to Early Cretaceous monzonitoid magmatism, occurring alongside significant tectonic activity along the Central Sikhote-Alin fault. U-Pb dating of ore-bearing dikes confirms their age at 103 million years. The deposit's ores contain native gold alongside high concentrations of silver (Ag), bismuth (Bi), and copper (Cu). A diverse array of bismuth minerals—including sulfides, tellurides, sulfotellurides, and intermetallic compounds—was identified, along with silver minerals such as cerargyrite, acanthite, and hessite. The study suggests a mantle source for the ore mineralization and classifies the deposit within a transform continental margin setting, providing new insights into its geological positioning.

Grebennikova, A. A., Dobroshevsky, K. N., Vakh, A. S., Goryachev, N. A., Khubanov, V. B.,. (2023). GEOLOGICAL POSITION AND GOLD-BISMUTH MINERALIZATION OF THE NAMOVSKOYE DEPOSIT (SOUTHERN SIKHOTE-ALIN). Tikhookeanskaya Geologiya, 42(6), 96–117. https://doi.org/10.30911/0207-4028-2023-42-6-96-117