Evidence of gold related to Neoarchean alkaline magmatism in the Abitibi greenstone belt (Canada) from mineral parageneses and microscale trace element geochemistry on pyrite
文献类型：期刊论文
| 作者 | Azevedo, Christophe3,6; Jebrak, Michel6; Genna, Dominique1,2; Pinti, Daniele L.4,5,6 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 145页码:21 |
| 关键词 | Gold deposit Alkaline magmatism LA-ICP-MS Pyrite Abitibi greenstone belt |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2022.104878 |
| 英文摘要 | Most of Archean gold deposits are classified as orogenic gold systems (OGS), precipitated by metamorphic fluids during compressional deformation at convergent plate margins. However, Neoarchean gold deposits are also found spatially related to post-collisional alkaline intrusions such as syenites, suggesting a genetic link between gold and magmas. To bring novel evidence on this relation, ore parageneses related to Bachelor/O'Brien, Beattie, Douay and Golden Arrow gold deposits were studied together with trace elements distribution at micron-scale in Au-bearing pyrites. Further, the delta S-34(pyrite) signature in the Beattie deposit were compared to epithermal Phan-erozoic analogues in post-collisional tectonic settings. Except for Golden Arrow, results show a paragenetic assemblage of K-feldspar-albite-anhydrite-barite-celestite-apatite-rutile-calcite-dolomite which is also common in Phanerozoic magmatic-hydrothermal systems. Gold-bearing pyrites are characterized by a higher abundance of most trace elements compared to OGS. Positive Au-Ag-Bi-Te-Tl-W-anomalies - which are not observed in OGS - suggest deposition from highly oxidized fluids, while Au precipitation in OGS is mainly controlled by reduced fluids. The presence of highly oxidized environments is also confirmed by very low delta S-34(pyrite) values ranging from -17.3 parts per thousand & nbsp; to-13.9 parts per thousand VCDT found at Beattie, in the range of those found in Phanerozoic deposits of Tuvatu and Emperor in Fiji. It is proposed that Archean gold related with late alkaline continental magmatism is deposited both at the top of porphyritic system and in epithermal environment, before the acme of deformation and metamorphism. |
| WOS关键词 | U-PB GEOCHRONOLOGY ; OROGENIC GOLD ; SUPERIOR-PROVINCE ; STABLE-ISOTOPE ; KIRKLAND LAKE ; LARDER LAKE ; PORPHYRY DEPOSITS ; IGNEOUS ROCKS ; CRIPPLE CREEK ; COPPER-GOLD |
| 资助项目 | Natural Sciences and Engineering Research Council of Canada (NSERC)[RGPIN-2016-04866] |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000799328700001 |
| 出版者 | ELSEVIER |
| 资助机构 | Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106000]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Azevedo, Christophe |
| 作者单位 | 1.CONSOREM, 555,boul. de Univ, Saguenay, PQ G7H 2B1, Canada 2.Univ Quebeca Chicoutimi, Ctr Etud ressources minerales, 555, boul de Univ, Saguenay, PQ G7H 2B1, Canada 3.Univ Quebeca Montreal, Res Ctr dynam Earth Syst, GEOTOP, Montreal, PQ H3C 3P8, Canada 4.Gansu Talent & Intelligence Ctr Remediat Closed &, Lanzhou 730000, Peoples R China 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China 6.Univ Quebeca Montreal, CP succ Ctr ville 8888, Dept Sci Terre & atmosphere, CP 8888 succ. Centre-ville, Montreal, PQ H3C 3P8, Canada |
| 推荐引用方式 GB/T 7714 | Azevedo, Christophe,Jebrak, Michel,Genna, Dominique,et al. Evidence of gold related to Neoarchean alkaline magmatism in the Abitibi greenstone belt (Canada) from mineral parageneses and microscale trace element geochemistry on pyrite[J]. ORE GEOLOGY REVIEWS,2022,145:21. |
| APA | Azevedo, Christophe,Jebrak, Michel,Genna, Dominique,&Pinti, Daniele L..(2022).Evidence of gold related to Neoarchean alkaline magmatism in the Abitibi greenstone belt (Canada) from mineral parageneses and microscale trace element geochemistry on pyrite.ORE GEOLOGY REVIEWS,145,21. |
| MLA | Azevedo, Christophe,et al."Evidence of gold related to Neoarchean alkaline magmatism in the Abitibi greenstone belt (Canada) from mineral parageneses and microscale trace element geochemistry on pyrite".ORE GEOLOGY REVIEWS 145(2022):21. |
入库方式： OAI收割
来源：地质与地球物理研究所
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