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Lentz, David R., Goodfellow, Wayne D. (1996) Intense silicification of footwall sedimentary rocks in the stockwork alteration zone beneath the Brunswick No. 12 massive sulphide deposit, Bathurst, New Brunswick. Canadian Journal of Earth Sciences, 33 (2) 284-302 doi:10.1139/e96-022

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Reference TypeJournal (article/letter/editorial)
TitleIntense silicification of footwall sedimentary rocks in the stockwork alteration zone beneath the Brunswick No. 12 massive sulphide deposit, Bathurst, New Brunswick
JournalCanadian Journal of Earth Sciences
AuthorsLentz, David R.Author
Goodfellow, Wayne D.Author
Year1996 (February 1)Volume33
Page(s)284-302Issue2
PublisherCanadian Science Publishing
DOIdoi:10.1139/e96-022Search in ResearchGate
Mindat Ref. ID482780Long-form Identifiermindat:1:5:482780:5
GUID630a81fd-71f8-4543-b694-92593dc6fb26
Full ReferenceLentz, David R., Goodfellow, Wayne D. (1996) Intense silicification of footwall sedimentary rocks in the stockwork alteration zone beneath the Brunswick No. 12 massive sulphide deposit, Bathurst, New Brunswick. Canadian Journal of Earth Sciences, 33 (2) 284-302 doi:10.1139/e96-022
Plain TextLentz, David R., Goodfellow, Wayne D. (1996) Intense silicification of footwall sedimentary rocks in the stockwork alteration zone beneath the Brunswick No. 12 massive sulphide deposit, Bathurst, New Brunswick. Canadian Journal of Earth Sciences, 33 (2) 284-302 doi:10.1139/e96-022
In(1996, February) Canadian Journal of Earth Sciences Vol. 33 (2) Canadian Science Publishing
Abstract/Notes Intensely silicified volcaniclastic mudstones that underlie the Brunswick No. 12 massive sulphide deposit in northern New Brunswick resemble silicified rocks described in the immediate footwall of many ancient and modern massive sulphide deposits. The white to grey, cryptocrystalline silica in the silicified rocks becomes more common with proximity to the vent, and is most abundant immediately below the massive sulphide zone. Mass-balance analysis of altered footwall sedimentary rocks on the 850 m level of the mine shows that SiO2 increases up to 300%. The high silica enrichment in the feeder zone is consistent with the presence of cherty silica in the massive sulphides and in associated exhalative iron formation. Coincident with silicification are enrichments in S, FeOt, MgO, MnO, CaO, P2O5, F, Cl, Y, Cu, Co, Cr, and Ni, as well as light rare earth elements and Eu. Oxygen isotope analyses of chloritized and silicified footwall sedimentary rocks suggest that the hydrothermal fluid had a δ18O composition of approximately 4[Formula: see text] and probably was dominated by chemically modified sea water. Rapid oversaturation of the silica-bearing fluid likely explains the intensity and fine-grained nature of this silicification, although the actual mechanism for this oversaturation is uncertain.

References Listed

These are the references the publisher has listed as being connected to the article. Please check the article itself for the full list of references which may differ. Not all references are currently linkable within the Digital Library.

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