Volcanic-hosted massive

Bailes, A.H. Galley, A.G., 1999. Evolution of the Paleoproterozoic Snow Lake arc assemblage and geodynamic setting for associated volcanic-hosted massive sulphide deposits, Flin Flon Belt, Manitoba, Canada. Canadian Journal of Earth Sciences, 36, 1789-1805. 

Leistel, J.M., Marcoux, E., Thieblemont, d., Quesada, c., Sanchez, a., Almodovar, G.R., Pascual, e. Saez, R. 1997. The volcanic-hosted massive sulphide deposits of the Iberian Pyrite Belt Review and preface to special issue, 33, 2-30. 

Zone, a volcanic-hosted massive sulphide deposit, Bathurst Mining Camp, New Brunswick Exploration and Mining Geology, 15, 177-199. 

Gemmell, J.B. Fulton, R.L. 2001. Geology, genesis and exploration implications of the footwall and hanging-wall alteration associated with the Hellyer volcanic-hosted massive sulfide deposit, Tasmania, Australia. Economic Geology, 96, 1003-1035. 

Large, R.R., Allen, R.L., Blake, M.D., Herrmann, W. 2001a. Hydrothermal alteration and volatile element haloes for the Rosebery K Lens volcanic-hosted massive sulfide deposit. Western Tasmania. Economic Geology, 96, 1055-1072. 

McKenzie, C.B., Desnoyers, D.W., Barbour, D., Graves, R.M. 1993. Contrasting volcanic-hosted massive sulfide styles in the Tuiks Belt, Central Newfoundland. Exploration and Mining Geology, 2, 73-84. 

Galley, A.G. 1995. Target vectoring using lithogeochemistry Applications to the exploration for volcanic hosted massive sulphide deposits. ClM Bulletin, 88, 15-27. 

Lentz, D.R. 1998. Petrogenetic evolution of feisic volcanic sequences associated with Phanerozoic volcanic-hosted massive sulphide systems the role of extensional geodynamics. Ore Geology Reviews, 12, 289-327. 

IRRINKI, R.R. 1992. Key Anacon sulfide deposit, Gloucester County, New Brunswick. Exploration Mining Geoiogy, 1, 121-129. Large, R.R. 1992. Australian volcanic-hosted massive sulfide deposits features, styles and genetic models. Economic Geoiogy, 87, 471-SI 0. 

Scott, 1997). Where these deposits are relatively large, such as at the TAG mound on the Mid-Atlantic Ridge, they resemble ancient volcanic-hosted massive sulphide (VMS) deposits like those presently found in ophiolites (Rona Scott, 1993 Humphris etal., 1995 Mills, 1995 Goulding etal., 1998 Scott, 1997). Some of the metals at hydrothermal vents are discharged as black smoke along with gases and other dissolved ions, and are expelled into plumes above and away from the vents (see Section 2.4). 

Currently in the United States, most of the lead produced comes from mines in Missouri, Alaska, Idaho, and Montana, primarily from lead-zinc and lead ores (361, 362). Worldwide, major lead deposits exist in association with zinc, silver, and/or copper (362). There are five major geological types of lead deposits volcanic-hosted massive sulfide deposits [Canada, Cyprus, Japan, Australia (Tasmania), Turkey] sediment-hosted deposits of sulfides interbedded with shales, and so on, formed in an anaerobic marine environment [Australia, Canada, Germany, United States (Alaska)] strata-bound carbonate deposits containing sulfide minerals [United States (Mississippi Valley), southern European Alps, Canada, Poland] sandstone-hosted deposits of finely crystalhne sulfides (Canada, France, Morocco, Sweden) and vein deposits of coarsely crystalline sulfide aggregates (western United States, Germany, Japan, Mexico, Peru) (364). The wide variety of compositions seen for lead minerals is illustrated by the representative lead minerals listed in Table XV (3,47). Below, we discuss the lead minerals that are most prevalent in nature in more detail. 

Goodfellow, W.D. McCutcheon, S.R. 2003. Geologic and genetic attributes of volcanic sediment-hosted massive sulfide deposits of the Bathurst mining camp, northern New Brunswick a synthesis. Economic Geology Monograph, 11, 245-301. 

The Siluro-Devonian Tobique-Chaleurs Zone (TCZ) of New Brunswick is host to several relatively small Zn-Pb Cu-Ag sulfide deposits and occurrences that are all spatially associated with Early Devonian felsic volcanic and related sedimentary rocks (Fig. 1). The sulfide mineralization occurs as veins, veinlets and replacements of rock units that had high primary permeability (e.g., flow top breccias). Massive bedded sulfides that are typical of many modern and ancient VMS deposits are not present however, their absence is not surprising given the relatively shallow oxidizing marine conditions at that time therefore, the TCZ deposits belong to that part of the VMS family formed beneath the seafloor. This study was undertaken to assess the nature of the felsic volcanic host rocks and their control on mineralization. 

The Halfmile Lake deposit consists of massive, breccia, and stockwork Zn-Pb-Cu sulfide mineralization hosted by volcanic and sedimentary rocks of the Ordovician Tetagouche Group (Mireku Stanley 2006 Adair 1992). The main sulphide minerals in the deposit are... 

The Big Lake Cu-Zn-Ag-Au voicanogenic massive sulphide (VMS) occurrence is hosted in mafic-ultramafic strata of the Schreiber-Hemio greenstone belt near Marathon, Ontario (Fig. 1). This VMS is unusual in that it is one of a few documented VMS occurrences in sequences lacking felsic volcanic or volcaniclastic rock. 

Immobile Element Lithogeochemistry of felsic volcanic rocks hosting the Restigouche Volcanogenic Massive Sulfide Deposit, Bathurst Mining... 

The altered volcanic sequence that hosts the Restigouche deposit is dominantly made up of rhyodacitic/dacitic massive flows and related autoclastic breccias and volcaniclastic ash (tuffaceos... 

Fig. 5. Zr/AbOs vs. Y/AI2O3 plot showing tholeiitic-transitional, transitional, and transitional-calc-alkaline nature of the volcanic rocks that host the Restigouche massive sulfide deposit. Zr/Y boundary ratios for the trends that divide the tholeiitiic-transitional and transitional-calc-alkaline fields are 4.5 and 7, respectively.

Bein, A. Lentz, D.R. 2009. Immobile Element Lithogeochemistry of felsic volcanic rocks hosting the Restigouche Volcanogenic Massive Sulfide Deposit, Bathurst Mining Camp, New Brunswick Canada. Proceedings of lAGS 2009. 

The case study ore deposit is a lens of massive sulphide and associated disseminated breccia and stringer sulphides, located in the Abitibi region of the province of Quebec, Canada. The orebody is hosted within a series of volcanic rocks, primar-... 

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