scholarly journals Stratigraphy and hydrothermal alteration of the Ming Cu-Au volcanogenic massive-sulphide deposit, Baie Verte Peninsula, Newfoundland

2014 ◽  
Author(s):  
J -L Pilote ◽  
S J Piercey ◽  
P Mercier-Langevin
Keyword(s):  
Hydrothermal Alteration ◽  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide

Hydrothermal alteration and lithogeochemistry of the Boundary volcanogenic massive sulphide deposit, central Newfoundland, Canada

2016 ◽  
Vol 53 (5) ◽  
pp. 506-527 ◽  
Author(s):  
Michael J. Buschette ◽  
Stephen J. Piercey
Keyword(s):  
Hydrothermal Alteration ◽  
Three Dimensional ◽  
Mobile Element ◽  
Short Wave ◽  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Element Geochemistry ◽  
Volcanogenic Massive Sulphide ◽  
Short Wave Infrared

The Boundary volcanogenic massive sulphide deposit (0.50 Mt at 3.5% Cu, 4.0% Zn, and 1.0% Pb, 34 g/t Ag) is hosted by the Tally Pond group (∼510 Ma), Victoria Lake supergroup, central Newfoundland, Canada, and represents a subseafloor replacement-style massive sulphide deposit. The deposit is hosted by rhyolitic lapilli tuff of the Bindons Pond formation. The rhyolites have immobile element signatures consistent with the formation of felsic rocks through the melting of juvenile-weakly evolved crust within an extensional rift environment (rifted peri-continental arc). The host rocks of the Boundary deposit contain elevated alteration indices, including high Ba/Sr, Hg/Na2O, chlorite–carbonate–pyrite index, and Ishikawa alteration index values. The mobile element geochemistry effectively differentiates between three distinct hydrothermal alteration styles: intense chlorite, chlorite-sericite, and quartz-sericite. Intense chlorite alteration exhibits mass gains in MgO and Cu and depletions in K2O and Ba. Chlorite-sericite alteration contains variable gains and losses of SiO2, K2O, Ba, MgO, and Fe2O3 depending on the dominant matrix mineral phase (i.e., chlorite vs. sericite). The quartz-sericite assemblage has mass gains in SiO2, K2O, Ba, and Fe2O3. Short-wave infrared spectroscopic data, particularly AlOH and FeOH absorption hulls, differentiate alteration styles and correlate with lithogeochemical results: AlOH absorption features increase in length (>2208 nm) proximal to Zn mineralization and wavelength variations correspond to relative abundances of sericite and chlorite. Electron probe microanalyses indicate that increasing short-wave infrared wavelengths correlate with increasing Mg–Fe and Fe contents in sericite and chlorite, respectively. Collectively, these data have been used to develop a three-dimensional alteration model of the Boundary deposit.

scholarly journals Marg Volcanogenic Massive Sulphide Deposit, Selwyn Basin

1990 ◽  
Author(s):  
R J W Turner ◽  
J G Abbott
Keyword(s):  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide

scholarly journals Selenium and tellurium resources in Kisgruva Proterozoic volcanogenic massive sulphide deposit (Norway)

2018 ◽  
Vol 99 ◽  
pp. 411-424 ◽  
Author(s):  
Liam A. Bullock ◽  
Magali Perez ◽  
Joseph G. Armstrong ◽  
John Parnell ◽  
John Still ◽  
...  
Keyword(s):  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide

scholarly journals Till geochemical signatures of the Izok Lake Zn-Cu-Pb-Ag volcanogenic massive sulphide deposit, Nunavut

2012 ◽  
Author(s):  
A K Hicken ◽  
M B McClenaghan ◽  
R C Paulen ◽  
D Layton-Matthews
Keyword(s):  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide

Environmental geochemistry at Red Mountain, an unmined volcanogenic massive sulphide deposit in the Bonnifield district,Alaska Range, east-central Alaska

2007 ◽  
Vol 7 (3) ◽  
pp. 207-223 ◽  
Author(s):  
Robert G. Eppinger ◽  
Paul H. Briggs ◽  
Cynthia Dusel-Bacon ◽  
Stuart A. Giles ◽  
Larry P. Gough ◽  
...  
Keyword(s):  
Environmental Geochemistry ◽  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Alaska Range ◽  
East Central ◽  
Volcanogenic Massive Sulphide

The Cae Coch volcanogenic massive sulphide deposit, Trefriw, North Wales

1985 ◽  
Vol 142 (5) ◽  
pp. 889-898 ◽  
Author(s):  
T. K. Ball ◽  
D. J. Bland
Keyword(s):  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide ◽  
North Wales

Silver and silver-bearing minerals at the Um Samiuki volcanogenic massive sulphide deposit, Eastern Desert, Egypt

2004 ◽  
Vol 39 (5-6) ◽  
pp. 608-621 ◽  
Author(s):  
Ibrahim M. Shalaby ◽  
Eugen Stumpfl ◽  
Hassan M. Helmy ◽  
Mahmoud M. El Mahallawi ◽  
Omar A. Kamel
Keyword(s):  
Eastern Desert ◽  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide

scholarly journals Geology and Au enrichment processes at the Paleoproterozoic Lalor auriferous volcanogenic massive sulphide deposit, Snow Lake, Manitoba

2015 ◽  
Author(s):  
A Caté ◽  
P Mercier-Langevin ◽  
P -S Ross ◽  
S Duff ◽  
M D Hannington ◽  
...  
Keyword(s):  
Massive Sulphide ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Volcanogenic Massive Sulphide
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