2 edition of Sulfide mineralogy of the Marbridge No. 3 and No. 4 deposits Malartic Mining District Quebec. found in the catalog.
Sulfide mineralogy of the Marbridge No. 3 and No. 4 deposits Malartic Mining District Quebec.
Written in English
|The Physical Object|
The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (S 2 2−) as the major sulfide minerals are economically important as metal sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulfarsenides and the sulfosalts. Sulfide minerals are inorganic compounds. polymetallic sulfide deposits containing the previously described metals. Seafloor massive sulfides are areas of ore that contain more than 50% sulfide minerals (Binns, ). They are highly concentrated and in some cases may be comparable or larger than some deposited on land (Scott, ). The following table describes the.
Massive ore-grade zinc, copper and iron sulphide deposits have been found at the axis of the East Pacific gh their presence on the deep ocean-floor had been predicted there was no. Phoenix and Selkirk deposits in Botswana [Maier et al., ], the St. Stephen and Moxie intrusions in the Appalachians [Thompson, ; Paktunc, ] and the Vammala intrusion in Finland [Peltonen, ]. However, the rarity of world-class magmatic Cu-Ni-PGE sulfide deposits in subduction zones has led to the general tenet that.
MINERALOGY AND CHEMISTRY OF SULFIDE DEPOSITS DRILLED FROM HYDROTHERMAL MOUND OF THE SNAKE PIT ACTIVE FIELD, MAR1 J. Honnorez,2 C. Mevel,3 and B. M. Honnorez-Guerstein2 With chemical analyses by H. P. Tomschi4 ABSTRACT The Snake Pit active hydrothermal field was discovered at 23°22'N on the Mid-Atlantic Ridge during ODP Leg and isolated occurrences of sulfide deposits in Pennsylvania depends on a wide variety of factors including the rock s depositional and structural history, its mineralogy and geochemistry, and present surface and subsurface hydrologic and geochemical environment. The common iron-sulfide minerals pyrite (FeS2) and.
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Volcanogenic massive sulfide ore deposits, also known as VMS ore deposits, are a type of metal sulfide ore deposit, mainly copper-zinc which are associated with and created by volcanic-associated hydrothermal events in submarine environments.
These deposits are also sometimes called volcanic-hosted massive sulfide (VHMS) deposits. The density generally is kg/m 3. Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfide-rich ore body.
Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created — threatening to poison the nearby water. The composition of the sulfide minerals can be expressed with the general chemical formula A m S n, in which A is a metal, S is sulfur, and m and n are integers, giving A 2 S, AS, A 3 S 4 and AS 2 stoichiometries.
The metals that occur most commonly in sulfides are iron, copper, nickel, lead, cobalt, silver, and zinc, though about fifteen others enter sulfide structures.
Sulfide mining differs significantly from iron ore (taconite or ferrous) mining because it has the potential to generate acidic pH. Copper and nickel typically are bound to sulfur in rock.
Because of this sulfur bond, they are described as sulfide minerals.3 The chief iron-bearing minerals in iron mining. Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.
Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks. g wall alteration - occurs in some deposits as a mineralogically defined zone of diffuse clay minerals + sericite + dolomite in relatively unmetamorphosed rock to epidote + silica + (sericite) in low grade metamorphic areas ea.
Kuroko deposits, Hokuroko District, Japan. What is Sulfide Mining. Sulfide mining (also known as metallic mining) refers to mining operations which remove metals, such as copper, nickel, platinum and others, from sulfur bearing ores. The 1 Hudson, T.L., F.D. Fox, and G.
Plumlee. Metal Mining and the Environment. American Geological Institute. The literature on sulfide minerals is extensive, with a number of overview textbooks and monographs. Comprehensive reviews can be found in Ribbe (), Vaughan and Craig (), and, most recently, in Vaughan ().The present article provides a brief overview of the compositions and crystal structures of the major sulfide minerals, aspects of their chemistries (bulk and surface) and their occurrence.
In particular, most chalcopyrite samples with relatively low 3 He /4 He ratios (– R a) and 40 Ar*/ 4 He values (–) are generally characterized by very high CO 2 /CH 4 ratios (~60–).
All these suggest that main-stage Cu-Ag metallogenic processes might have not been affected by high-temperature magmatic activities. Oxidation of iron sulfides in waste rock dumps and tailings deposits may result in formation of acid rock drainage (ARD), which often is a challenging problem at mine sites.
Therefore, integrating an ARD management plan into the actual mine operations in the early phases of exploration, continuing through the mine life until final closure might be successful and decrease the environmental impact.
The sulfosalts are a special group of the sulfide minerals that have a general formula A m T n X p and in which the common elements are A = Ag, Cu, Pb; T = As, Sb, Bi; X = S.
They generally contain pyramidal TS 3 groups in their structures. Several hundred sulfide minerals are known, but only five are sufficiently abundant accessory minerals to.
Oxidation of sulfide minerals near the Earth's surface in the presence of water and oxygen frequently results in production of highly acidic, sulfate-rich solutions known as acid drainage. Acid drainage is comrnonly associated with the extraction and processing of sulfide-bearing metalliferous ore deposits, sulfide-rich coal, and weathering of.
Hydrothermal ore deposits are large geochemical anomalies of sulfur and metals in the Earth's crust that have formed at Sulfide minerals in hydrothermal deposits are the primary economic source of metals used by society, which occur as major, minor and trace elements.
Currently, most exploration activity for massive sulphide deposits is taking place within Exclusive Economic Zones (EEZs) in the SW Pacific (c. m water depth). Mining of copper and gold from sulphides was due to commence off Papua New Guinea inbut at present is on hold. The oceanic core complexes and large-offset detachment faults characteristic of the slow-spreading Mid-Atlantic Ridge are crucial for the structural control of large hydrothermal systems, including those forming sub-seafloor polymetallic sulfide mineralization.
The structural-geological, petrographic, and mineralogical data are considered for the oceanic core complex enclosing the Semenov Massive sulphides are spatially and temporally associated with iron formation (IF) and other hydrothermal sedimentary rocks in the vicinity of the Brunswick No.
12, Brunswick No. 6, and Austin Brook deposits, Bathurst Mining Camp. Sulphide- carbonate- oxide- and silicate-predominant IF is present. Crystallography and chemical bonding of sulfide minerals Linus Pauling, pp. Download ( MB) Sulfur isotope geochemistry and fractionation between coexisting sulfide minerals H.
Thode, pp. Download ( MB) Physical properties of sulfide materials Stanley J. Pickart, pp. Download ( MB). The Crystal chemistry of Sulfate Minerals by Frank C. Hawthorne, Servey V.
Krivovichev, and Peter C. Burns, p. 1 - Chapter 2. X-ray and Vibrational Spectroscopy of Sulfate in Earth Materials by Satish C. Myneni, p. - Chapter 3. Sulfate Minerals in Evaporite Deposits by Ronald J.
Spencer, p. - Chapter 4. sulfide deposits. Fields A, B, and C (Plumlee and others, ), are those for West Shasta, Calif., district VMS deposits, sulfide-mineral-rich vein deposits in rocks with low buffering capacity, and sulfide-mineral-rich vein deposits in carbonate host rocks, respectively.
Field D is the. Mineral - Mineral - Sulfides: This important class includes most of the ore minerals. The similar but rarer sulfarsenides are grouped here as well. Sulfide minerals consist of one or more metals combined with sulfur; sulfarsenides contain arsenic replacing some of the sulfur.
Sulfides are generally opaque and exhibit distinguishing colours and streaks. (Streak is the colour of a mineral’s. Maiden, K.J. () Massive sulphide Cu-Zn-Ag deposits of the Matchless Amphibolite Belt, Namibia: Remobilised syngenetic deposits or syntectonic deposits.
Contribution II O-8, 29th Int. Geol. Congress, Kyoto, Abstracts Volume 3 p Google Scholar.David J. Vaughan, in Reference Module in Earth Systems and Environmental Sciences, Introduction.
The sulfide minerals are the major source of world supplies of a very wide range of metals and are the most important group of ore addition to their concentrated occurrence in ore deposits and areas of mineralization, a limited number of sulfide minerals are found as accessory.The locations of important deposits, both Ni-Cu dominant and PGE dominant, are shown in Fig.
1. 2. Considering first Ni-Cu deposits, these are further divided into six classes (Table 1. 2) on the basis of their associated magma type. Class NC- 1 (Chap. 3) comprises those related to komatiitic magmatism.