arsenic minerals sulphides
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arsenic minerals sulphides

Arsenic Sulfides - an overview ScienceDirect Topics

Arsenic occurs as a major constituent in > 200 minerals, including elemental As, arsenides, sulphides, oxides, As(V) and As(III). The greatest concentrations of these minerals occur in mineralized areas and are found in close association with the metals such as Cd, Pb, Ag, Au, Sb, P, W and Mo. The most abundant As ore mineral is arsenopyrite, FeAsS.

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Flotation separation of copper sulphides from arsenic ...

2014-11-1  A range of arsenic minerals including arsenopyrite, tetrahedrite, tennantite and enargite occur in various copper deposits in the world. Rejection of arsenic minerals in sulphide flotation has been reviewed by Ma and Bruckard, 2009, Plackowski et al., 2012. In general, pre-oxidation of flotation pulp and Eh control during flotation are promising options to separate arsenic from other sulphides.

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Arsenic and Antimony Sulphide Minerals in Cyanidation

2014-9-17  However, some arsenic and antimony sulphide minerals decompose to some extent in alkaline cyanide solutions to form complex reducing compounds which retard or prevent gold dissolution. It is probable that if the decomposition of these minerals

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Sulfide Minerals - an overview ScienceDirect Topics

Arsenopyrite (FeAsS), orpiment (As 2 S 3), and realgar (AsS/As 4 S 4) are the most common arsenic sulfide minerals, occurring primarily in hydrothermal and magmatic ore deposits. Arsenic is commonly found in sulfide-bearing mineral deposits; especially with gold mineralization.

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Flotation separation of copper sulphides from arsenic ...

The arsenic content of Rosebery copper flotation feed is mainly present as arsenopyrite (FeAsS), containing approximately 46.0% arsenic with the remainder of the arsenic in copper sulphosalts (tennantite (Cu 12 As 4 S 13)), in a solid solution series with tetrahedrite (Cu 12 Sb 4 S 13). Tennantite contains approximately 20.3% arsenic.

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Secondary arsenic minerals and arsenic mobility in a ...

2014-11-12  Arsenic sulphides are oxidized and secondary minerals like scorodite, jarosite and Fe-sulfoarsenates precipitate. These secondary minerals are dissolved later and ground water in adjacent monitoring wells has >20 mg/L of arsenic.

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Arsenic Sulphide Glass No. 2 - Mines, Minerals and More

black with internal red lights. Lustre: Earthy. Crystal System: Amorphous. Name: From the chemical composition. A sulfide glass with a ratio of Arsenic to sulfur as roughly 3:5, 3-8% lead and 1% thallium. Originally reported from Excelsior Mine, Cerro de Pasco,

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Realgar and Orpiment - Arsenic Sulfide Minerals

Realgar is a monoclinic arsenic sulfide mineral with a brilliant red color and a chemical composition of As 4 S 4. Well-formed realgar crystals can look so much like red gemstones that the mineral was often called "ruby sulfur" and "ruby arsenic."

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Minerals Free Full-Text Release Behaviors of Arsenic ...

The sludge of sulfuric acid may promote the oxidation of arsenic sulfide to cause an increase in arsenic release concentration. To further confirm the oxidation of the sulfuric acid

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Mineralogy of Sulfides Elements GeoScienceWorld

Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition is commonly widened to include minerals in which the anion is As or Sb, sometimes together with S, and to include Se and Te minerals.

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Arsenic Sulphide Glass No. 2 - Mines, Minerals and More

black with internal red lights. Lustre: Earthy. Crystal System: Amorphous. Name: From the chemical composition. A sulfide glass with a ratio of Arsenic to sulfur as roughly 3:5, 3-8% lead and 1% thallium. Originally reported from Excelsior Mine, Cerro de Pasco,

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BENEFICIATION OF ARSENIC BEARING COMPLEX

2012-10-4  arsenic bearing minerals at an early stage of the process such as flotation (Ma and Bruckard, 2009). Enargite, tennantite and tetrahedrite are usually secondary minerals to other copper sulphides. Flotation mechanisms of these minerals are not well understood since there

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Arsenic contamination of natural origin in stream ...

2012-2-13  Arsenic minerals in the mineralization and disseminations are represented by mixed sulphides and the pyrite-arsenopyrite (FeS2-As(S)) association is frequently observed. These may be considered to be the chief As-carrier minerals in the source rocks while the nature of the As carrier phases in the derived residual soils

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Mineral - Sulfides Britannica

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 ...

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Arsenic in Complex Orebodies Ausenco

Previous research has demonstrated the possibility of separating arsenic-copper sulphides from other copper minerals by controlling the potential of the flotation pulp in the single mineral systems. The selective flotation of enargite from copper sulphides in a complex ore system is discussed in this paper. Methodology and Results

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Heavy metal sulphide deposits and geochemical surveys

2018-6-16  Natural concentrations of these metals are bound with sulphur in sulphide minerals such as galena and cinnabar. In sulphide mineral deposits the minimum metal concentrations for economic ores are of the order of 4 % for lead and 0.1 % for mercury. Cadmium and arsenic are not mined in their own right but accompany other metal sulphides.

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The Mineral Gallery - Sulfides Class

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin.

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The Right Chemistry: Arsenic, 'king of poisons' and ...

2019-9-20  Arsenic-containing minerals such as orpiment or realgar, which are sulphides of arsenic, are sometimes found together with other metal ores. When heated in the presence of oxygen, arsenic ...

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Secondary arsenic minerals and arsenic mobility in a ...

2014-11-12  The arsenic mineralization in historical waste rock pile at Kaňk site near Kutná Hora developed over a period of about 500 years. The objective of this study was to determine principal secondary arsenic mineral phases and their environmental stability. The only common primary As-bearing mineral – arsenopyrite - occurs in the mineral assemblage of Kutná Hora base-metal deposit together ...

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The Classification of Minerals - Geology In

2021-6-16  Minerals of the sulfide class are compounds which contain the nonmetallic element sulfur in combination with atoms of a metal or a semimetal.Compounds in which anions of antimony (Sb), arsenic (As), selenium (Se), or tellurium (Te) replace the sulfur anion and bond with metallic or semimetallic cations are classed respectively as antimonides, arsenides, selenides, and tellurides.

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Arsenic Sulphide Glass No. 2 - Mines, Minerals and More

black with internal red lights. Lustre: Earthy. Crystal System: Amorphous. Name: From the chemical composition. A sulfide glass with a ratio of Arsenic to sulfur as roughly 3:5, 3-8% lead and 1% thallium. Originally reported from Excelsior Mine, Cerro de Pasco,

Read More
BENEFICIATION OF ARSENIC BEARING COMPLEX

2012-10-4  arsenic bearing minerals at an early stage of the process such as flotation (Ma and Bruckard, 2009). Enargite, tennantite and tetrahedrite are usually secondary minerals to other copper sulphides. Flotation mechanisms of these minerals are not well understood since there

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Selective separation of arsenic-containing sulfide

The increased flotation activity of arsenic-containing DTF minerals is experimentally shown both individually and in mixture with ITC in a weakly acid medium (pH 4–6). The recovery of FeAsS and Cu 12 As 4 S 13 with DTF is higher than with ButKh. Individually, the ITC practically does not flotate iron sulphides.

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Unlocking Value in Copper Arsenic Sulphide Resources

2015-11-20  specific to copper arsenic sulphides are briefly discussed below [12]. Pressure oxidation involves oxidation of sulphide minerals at elevated pressure and temperature in the presence of catalytic chloride ions. In the case of arsenic bearing concentrates, a significant portion of the copper value can be found in minerals such as enargite (Cu 3AsS

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Arsenic contamination of natural origin in stream ...

2012-2-13  Arsenic minerals in the mineralization and disseminations are represented by mixed sulphides and the pyrite-arsenopyrite (FeS2-As(S)) association is frequently observed. These may be considered to be the chief As-carrier minerals in the source rocks while the nature of the As carrier phases in the derived residual soils

Read More
Mineral - Sulfides Britannica

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 ...

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The Sulfides - Rocks And Minerals 4 U

Cinnabar - This bright red mineral crystallizes around hot springs or hydrothermal veins. It contains up to 85% mercury and is the worlds primary source of the element. Mercury: Galena is a coumpound of sulfur and lead. It contains about 10% lead. Lead: Calcocite is the richest of copper ores containing about 80% copper. It is a rare mineral and most of the known deposits have been mined out.

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The Mineral Gallery - Sulfides Class

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin.

Read More
The Right Chemistry: Arsenic, 'king of poisons' and ...

2019-9-20  Arsenic-containing minerals such as orpiment or realgar, which are sulphides of arsenic, are sometimes found together with other metal ores. When heated in the presence of oxygen, arsenic ...

Read More
The Classification of Minerals - Geology In

2021-6-16  Minerals of the sulfide class are compounds which contain the nonmetallic element sulfur in combination with atoms of a metal or a semimetal.Compounds in which anions of antimony (Sb), arsenic (As), selenium (Se), or tellurium (Te) replace the sulfur anion and bond with metallic or semimetallic cations are classed respectively as antimonides, arsenides, selenides, and tellurides.

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