The co-precipitation of copper and zinc with lead jarosite

Dutrizac, J. E.; Dinardo, O.

doi:10.1016/0304-386x(83)90016-6

Cited by 63 publications

(27 citation statements)

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“…The syntheses of the Pb-Cu and Pb-Zn jarosite compounds were based on the methods of Dutrizac and Dinardo (1983) and Jambor andDutrizac (1983, 1985). The Pb-Cu-and Pb-Zn-jarosite compounds were made from a one litre solution containing 0.054 M Fe 2 (SO 4 ) 3 ·5H 2 O and 0.02 M H 2 SO 4 , with the addition of either 0.315M CuSO 4 ·5H 2 O (for Pb-Cu-jarosite) or 0.306 M ZnSO 4 ·7H 2 O (for Pb-Zn jarosite).…”

Section: Synthesismentioning

confidence: 99%

Synthesis, characterization and thermochemistry of synthetic Pb–As, Pb–Cu and Pb–Zn jarosites

Forray

Smith

Navrotsky

et al. 2014

Geochimica et Cosmochimica Acta

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The enthalpy of formation from the elements of well characterized Pb-As, Pb-Cu, measured by high temperature oxide melt solution calorimetry and gave !Hº f = -3691.2 ± 8.6 kJ/mol, !Hº f = -3653.6 ± 8.2 kJ/mol, and !Hº f = -3669.4 ± 8.4 kJ/mol, respectively. Using estimated entropies, the standard Gibbs free energy of formation from elements at 298 K !Gº f of the three compounds were calculated to be -3164.8 ± 9.1 kJ/mol, -3131.4 ± 8.7 kJ/mol, and -3153.6 ± 8.9 kJ/mol, respectively. Based on these free energies, their logK sp values are -13.94 ± 1.89, -4.38 ± 1.81 and -3.75 ± 1.80, respectively. For tis compounds, a log 10 {Pb 2+ } -pH diagram is presented. The diagram shows that the formation of Pb-As jarosite may decrease aqueous arsenic and lead concentrations to meet drinking water standards. The new thermodynamic data confirm that transformation of Pb-As jarosite to plumbojarosite is thermodynamically possible.

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Section: Synthesismentioning

confidence: 99%

Synthesis, characterization and thermochemistry of synthetic Pb–As, Pb–Cu and Pb–Zn jarosites

Forray

Smith

Navrotsky

et al. 2014

Geochimica et Cosmochimica Acta

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“…Examples include importance in ore dressing (Dutrizac and Jambor 2000;Jiang and Lawson 2006), in environmental studies (e.g. Dutrizac and Dinardo 1983;Alpers et al 1989;Dutrizac et al 1996;Sasaki and Konno 2000;Morin et al 2001;Kolitsch and Pring 2001), and the recognition of jarosite presence on the surface of Mars (Klingelhöfer 2004). This situation warranted a detailed and complex study of locally abundant assemblage including Cu-rich members of the beudantite-segnitite series (alunite supergroup) in the Krupka ore district.…”

Section: Introductionmentioning

confidence: 99%

Cu-rich members of the beudantite-segnitite series from the Krupka ore district, the Krušné hory Mountains, Czech Republic

Sejkora¹,

Skovira²,

Čejka³

et al. 2012

J. Geosci.

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Copper-rich members of the beudantite-segnitite series (belonging to the alunite supergroup) were found at the Krupka deposit, Krušné hory Mountains, Czech Republic. They form yellow-green irregular to botryoidal aggregates up to 5 mm in size. Well-formed trigonal crystals up to 15 μm in length are rare. Chemical analyses revealed elevated Cu contents up to 0.90 apfu. Comparably high Cu contents were known until now only in the plumbojarosite-beaverite series. The Cu 2+ ion enters the B 3+ position in the structure of the alunite supergroup minerals via the heterovalent substitution Fe. The unit-cell parameters (space group R-3m) a = 7.3265(7), c = 17.097 (2) Interpretation of thermogravimetric and infrared vibrational data is also presented. The Cu-rich members of the beudantite-segnitite series are accompanied by mimetite, scorodite, pharmacosiderite, cesàrolite and carminite. These minerals are characterized by refined unit-cell parameters and by quantitative chemical analyses. The assemblage of supergene minerals corresponds to the following crystallization sequence: mimetite → beudantite-segnitite → pharmacosiderite, scorodite, cesàrolite, and carminite.

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“…Similarly, the increased concentrations of Fe, S0 4 , and Pb can be attributed to natrojarcisite dissolution. The higher As concentrations in the pore water at this depth also may have resulted from natrojarosite dissolution, as minor solid-solution incorporation of As is documented in jarosite Dinardo 1983, Dutrizac andJarnbor 1987). Increased concentrations of Zn may be attributed to retention of ZnS0 4 in the aqueous phase during co-disposal (Jarnbor and Owens 1992).…”

Section: Natrojarosite Disposal Zonementioning

confidence: 99%

The Pore-Water Geochemistry of the Cu-Zn Mine Tailings at Kidd Creek, Near Timmins, Ontario, Canada

Al¹,

Blowes²,

Jambor³

1994

ASMR

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The Kidd Creek Cu-Zn sulfide deposit near Timmins, ON. has been in operation since 1966, with current production of approximately 10,000 tpd. Tailings from the deposit contain 10 to 25 wt % pyrite and are disposed of as a thickened slurry in a 12-to 15-m high cone-shaped deposit in a 1,200-ha impoundment. Approximately 2.5 wt % natrojarosite residue from the zinc concentrate refining circuit has been disposed of with the tailings since 1985. The natrojarosite residue is limited to the upper 4.5 m of tailings. Three geochemical zones are defined by the porewater concentrations of metals and S0 4 • In the deepest zone, concentrations of most metals and anions are below detection and Na, K, Mg, Mn, Fe, Zn, HCO,, and S0 4 are low, reflecting the mill discharge-water released with the tailings. In this zone, gypsum precipitation controls the concentrations of Ca and S0 4 , the dominant elements in the pore water. Higher concentrations of Na, K, Mg, Mn, Fe, Zn, Pb, As, HCO,, and S0 4 occur in an intermediate zone coincident with detectable natrojarosite in core samples. These increases indicate that some natrojarosite deposited with the tailings has dissolved. Higher Zn concentrations in the intermediate zone than in the deep zone are attributed to minor substitution of Zn in natrojarosite and to residual aqueous Zn-sulfate in the natrojarosite residue that is co-disposed with the tailings. A surficial zone with visible signs of sulfide oxidation contains high concentrations of Na, K, Mg, Mn, Fe, Zn, Pb, Cu, Ni, Co, Cd, AI, As, NO,, and S0 4 • Oxidation reactions, and the consequent pH decrease, have increased the concentrations of metals and S0 4 in the shallow pore-water.

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The co-precipitation of copper and zinc with lead jarosite

Cited by 63 publications

References 1 publication

Synthesis, characterization and thermochemistry of synthetic Pb–As, Pb–Cu and Pb–Zn jarosites

Synthesis, characterization and thermochemistry of synthetic Pb–As, Pb–Cu and Pb–Zn jarosites

Cu-rich members of the beudantite-segnitite series from the Krupka ore district, the Krušné hory Mountains, Czech Republic

The Pore-Water Geochemistry of the Cu-Zn Mine Tailings at Kidd Creek, Near Timmins, Ontario, Canada

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