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040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-yk
0861 |aM183-2/8895E-PDF
1001 |aPinet, N., |eauthor.
24510|aExploring the link between organic matter and Carlin-type gold mineralization : |bnew insights from Yukon deposits / |cN. Pinet, O.H. Ardakani, J. Cesar, D.C. Petts, C. Debuhr, and P.J. Sack.
264 1|a[Ottawa] : |bGeological Survey of Canada, |c2022.
264 4|c©2022
300 |a1 online resource (22 pages) : |billustrations (chiefly colour).
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aOpen file ; |v8895
504 |aIncludes bibliographical references (pages 20-22).
5203 |a"The link between organic matter and gold in sediment-hosted Carlin-type deposits is controversial. This study aims to tackle this potential link by documenting the occurrence of organic matter in a single borehole from a Carlin-type gold deposit in Yukon and by considering, in a preliminary way, the spatial and/or temporal relationship between organic matter and gold mineralization. The sedimentary succession hosting the Conrad deposit was relatively rich in organic matter, possibly related to Archea. Despite the high maturation of samples, the total organic carbon (TOC) content of the limestone unit averages 1.31 wt. % (maximum = 3.18 wt. %). Petrographic observations indicate that pore and fracture filling pyrobitumen is the dominant organic matter maceral in the studied samples. This type of pyrobitumen was matured after its emplacement, indicating that hydrocarbon fluids cannot have served as an agent for gold transport. Pyrobitumen disseminated in the rock or associated with stylolites are also documented. The correlation between TOC and Tl (the best proxy for Au) for selected samples and the high As content of pyrobitumen filling pores may suggest a link between organic matter content and gold deposition, but this was not demonstrated by LA-ICP-MS micro-scale mapping. This study also highlights the challenges of establishing a direct spatial relationship between 'invisible' gold and very small (< 10 μm) pyrobitumen particles"--Abstract, page 1.
650 0|aGold ores|xGeology|zYukon.
650 0|aGold ores|zYukon|xAnalysis.
650 6|aOr|xGisements|xGéologie|zYukon.
650 6|aOr|xGisements|zYukon|xAnalyse.
7102 |aGeological Survey of Canada, |eissuing body.
830#0|aOpen file (Geological Survey of Canada)|v8895.|w(CaOODSP)9.506878
85640|qPDF|s19.61 MB|uhttps://publications.gc.ca/collections/collection_2022/rncan-nrcan/m183-2/M183-2-8895-eng.pdf
8564 |qHTML|sN/A|uhttps://doi.org/10.4095/330086