Geology, geochemistry and sulphur isotopes of the Hat Han gold–antimony deposit, NE Vietnam

A new orogenic gold belt in Southeast Asia: Geology, mineralogy and genesis of the Vangtat gold deposit, Southeastern Laos

“…Precious‐ and base‐metal deposits in Southeast Asia are mainly found along the boundaries of the different terranes and internal domains, such as the Truong Son and Loei fold belts (Figure 1). Within the northern and eastern regions of the Indochina Terrane several gold deposits have been discovered and developed: the Song Hien sediment‐hosted gold deposits in NE Vietnam, located in the western part of the South China Terrane close to the northeastern margin on the Indochina Terrane (Tran et al ., 2016; Nevolko et al ., 2017); distal disseminated, sediment‐hosted gold deposits associated with skarn (and porphyry) mineralization in the Sepon Cu‐Au‐Mo district (Smith et al ., 2005; Cannell and Smith, 2008; Cromie et al ., 2018); and the Phuoc Son and Bong Mieu orogenic gold deposits in central Vietnam (Manaka, 2014, unpublished data; Tran et al ., 2014). This paper presents a study of a new gold belt that has been discovered recently in the Vangtat region of southeastern Laos (Figures 1, 2).…”

In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt

“…Antimony (Sb) is one of the critical metals and commonly found in epigenetic hydrothermal ore deposits ( Seal et al, 2017 ). Precisely determining the age of Sb deposits can help to understand their origin and further prospecting ( Scratch et al, 1984 ; Maheux, 1989 ; Lu, 1994 ; Wang, 2008 ; Tran et al., 2016 ; Xie et al., 2017 ). However, dating is a challenging work because of low radioisotope contents in their minerals (stibnite, carbonates, and quartz ± fluorite) ( Gumiel and Arribas, 1987 ; Wu, 1993 ; Murao et al., 1999 ; Shen et al., 2011 , 2013 ).…”