Ma, Tianqi, Chen, Cuihua, Zhang, Yan, Yang, Yulong, Liu, Xiaokong, Lai, Xiang, Gu, Ying, Fan, Tao (2024) Mineralogy and mineral chemistry of Bi-Te minerals: Constraints on mineralization process of the Dulanggou gold deposit, Dadu River Metallogenic Belt, China. Ore Geology Reviews, 169. 106091 doi:10.1016/j.oregeorev.2024.106091
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Mineralogy and mineral chemistry of Bi-Te minerals: Constraints on mineralization process of the Dulanggou gold deposit, Dadu River Metallogenic Belt, China | ||
| Journal | Ore Geology Reviews | ||
| Authors | Ma, Tianqi | Author | |
| Chen, Cuihua | Author | ||
| Zhang, Yan | Author | ||
| Yang, Yulong | Author | ||
| Liu, Xiaokong | Author | ||
| Lai, Xiang | Author | ||
| Gu, Ying | Author | ||
| Fan, Tao | Author | ||
| Year | 2024 | Volume | < 169 > |
| URL | |||
| DOI | doi:10.1016/j.oregeorev.2024.106091Search in ResearchGate | ||
| Generate Citation Formats | |||
| Classification | Not set | LoC | Not set |
| Mindat Ref. ID | 17404636 | Long-form Identifier | mindat:1:5:17404636:5 |
| GUID | 0 | ||
| Full Reference | Ma, Tianqi, Chen, Cuihua, Zhang, Yan, Yang, Yulong, Liu, Xiaokong, Lai, Xiang, Gu, Ying, Fan, Tao (2024) Mineralogy and mineral chemistry of Bi-Te minerals: Constraints on mineralization process of the Dulanggou gold deposit, Dadu River Metallogenic Belt, China. Ore Geology Reviews, 169. 106091 doi:10.1016/j.oregeorev.2024.106091 | ||
| Plain Text | Ma, Tianqi, Chen, Cuihua, Zhang, Yan, Yang, Yulong, Liu, Xiaokong, Lai, Xiang, Gu, Ying, Fan, Tao (2024) Mineralogy and mineral chemistry of Bi-Te minerals: Constraints on mineralization process of the Dulanggou gold deposit, Dadu River Metallogenic Belt, China. Ore Geology Reviews, 169. 106091 doi:10.1016/j.oregeorev.2024.106091 | ||
| In | Link this record to the correct parent record (if possible) | ||
| Abstract/Notes | There is a widely recognized association of bismuth (Bi)-tellurium (Te) minerals with gold in many hydrothermal gold deposits. However, the specific process for gold enrichment related to Bi-Te minerals remains enigmatic. The Dulanggou gold deposit, located on the southeastern margin of the Songpan-GarzĂȘ orogenic belt, China, provides an opportunity to research this process. Gold in the deposit is mainly associated with coarse-grained Bi-Te minerals and bismuth-rich polyphase metal droplets. Three mineralization stages are identified in the deposit. In Stage 1, a small amount of gold was deposited within dominate pyrrhotite. In Stage 2, a large amount of visible gold grains were precipitated with coarse-grained Bi-Te minerals. The various Bi-Te phases are mainly tsumoite, pilsenite, unnamed minerals (Bi3Te2, Bi2Te), josĂ©ite-B and trace hedleyite, which have a common characteristics of 2 â„ Bi/Te > 1. In stage 3, around the Stage 2 large Bi-Te phase patches, bismuth-rich polyphase metal droplets pervasively occurred with Bi/Te â„ 2. Other Bi-Te minerals in Stage 3 include hedleyite, unnamed minerals (Bi3Te, Bi8Te3, Bi5Te), josĂ©ite-B, and josĂ©ite-A, all intergrowth with gold and maldonite in the metal droplets. Mineral chemistry and phase diagrams of the Bi-Te mineral assemblages indicate that the mineralization temperatures at Stages 2 and 3 are > 325 â and around 235 â respectively, and the fTe2 and fS2 gradually decrease from Stage 2 to Stage 3. Importantly, a large amount of native gold was deposited with native Bi during Stage 3 and Bi contents in Bi-Te minerals increase with gold fineness from 799 ⌠876 at Stage 2 to 833 ⌠939 at Stage 3. These indicate that the metal droplets could be Bi-rich melts which were separated from Bi-Te phase patches and scavenged gold from earlier mineral assemblages to enhance gold enrichment. | ||
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