Geochemical controls on ground water composition at the Cripple Creek Mining District, Cripple Creek, Colorado

Eary, L. E.; Runnells, Donald D.; Esposito, K.J.

doi:10.1016/s0883-2927(02)00049-5

Cited by 44 publications

(17 citation statements)

References 10 publications

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“…The model quantifies the processes of dissolution and/or precipitation that lead to the final solution chemistry. Applications using PHREEQC in the analysis of geochemical data are common in the literature: Uliana and Sharp (2001) used inverse modelling to study groundwater evolution; Eary et al (2003) assessed water quality changes in connection with mining operations; and Lecomte et al (2005) modelled geochemical dissolution-precipitation processes in semi-arid mountain rivers.…”

Section: Field Sitementioning

confidence: 99%

Hydrochemical appraisal of ice‐ and rock‐glacier meltwater in the hyperarid Agua Negra drainage basin, Andes of Argentina

Lecomte

Milana

Formica

et al. 2007

Hydrological Processes

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Abstract:The Agua Negra drainage system (30°12 0 S, 69°50 0 W), in the Argentine Andes holds several ice-and rock-glaciers, which are distributed from 4200 up to 6300 m a.s.l. The geochemical study of meltwaters reveals that ice-glaciers deliver a HCO 3 -Ca 2C solution and rock-glaciers a SO 4 2 -HCO 3 -Ca 2C solution. The site is presumably strongly influenced by sublimation and dry deposition. The main processes supplying solutes to meltwater are sulphide oxidation (i.e. abundant hydrothermal manifestations), and hydrolysis and dissolution of carbonates and silicates. Marine aerosols are the main source of NaCl. The fine-grained products of glacial comminution play a significant role in the control of dissolved minor and trace elements: transition metals (e.g. Mn, Zr, Cu, and Co) appear to be selectively removed from solution, whereas some LIL (large ion lithophile) elements, such as Sr, Cs, and major cations, are more concentrated in the lowermost reach. Daily concentration variation of dissolved rare earth elements (REE) tends to increase with discharge. Through PHREEQC inverse modelling, it is shown that gypsum dissolution (i.e. sulphide oxidation) is the most important geochemical mechanism delivering solutes to the Agua Negra drainage system, particularly in rock-glaciers. At the lowermost reach, the chemical signature appears to change depending on the relative significance of different meltwater sources: silicate weathering seems to be more important when meltwater has a longer residence time, and calcite and gypsum dissolution is more conspicuous in recently melted waters. A comparison with a non-glacierized semiarid drainage of comparable size shows that the glacierized basin has a higher specific denudation, but it is mostly accounted for by relatively soluble phases (i.e. gypsum and calcite). Meltwater chemistry in glacierized arid areas appears strongly influenced by sublimation/evaporation, in contrast with its humid counterparts.

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Section: Field Sitementioning

confidence: 99%

Hydrochemical appraisal of ice‐ and rock‐glacier meltwater in the hyperarid Agua Negra drainage basin, Andes of Argentina

Lecomte

Milana

Formica

et al. 2007

Hydrological Processes

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“…Recent references with applications of PHREEQC inverse modeling to geochemical problems, include Uliana and Sharp (2001), who used inverse modeling to study groundwater evolution along the flow path and spring discharge under baseflow and stormflow conditions; and Eary et al (2003), who assessed water quality changes in connection with mining operations. Drever (1997) includes a chapter on the use of popular computer codes to assess water quality problems through transport and reaction modeling.…”

Section: Geochemical Modelingmentioning

confidence: 99%

Mineral Weathering in a Semiarid Mountain River: Its assessment through PHREEQC inverse modeling

2005

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By means of PHREEQC inverse modeling, we have simulated the weathering reactions in Los Reartes River, a mountainous ($2400-670 m a.s.l.) drainage basin from the Sierras Pampeanas of Co´rdoba, Argentina, analyzing the effect of lithology, relief, and climate. The steep upper half of the basin (slopes >20%) is occupied by exposed granite; the remaining area is mostly metamorphic, with cropping out gneisses and progressively decreasing slopes (<6%). Climate is semihumid to semiarid; rainfall mainly occurs in summer and decreases with decreasing height. PHREEQC inverse models developed using water chemical data showed that: (a) oligoclase was the major supplier of solutes, while the main precipitated phase was kaolinite in the granite domain; (b) muscovite is the chief supplier of solutes and illite is the main precipitated phase in the gneissic realm; (c) the steeper portions of the metamorphic reach are less crucial in supplying solutes than the lower ones, thus highlighting the importance of the water residence time in the kinetics of dissolution; (d) in the driest time of the year (winter, $20 mm/ month) we registered the highest production of dissolved and precipitated phases; fluxes (mmol/ month), however, are higher at the end of the rainy season; (e) CO 2 consumption is important all along the Los Reartes drainage basin and, in terms of mmol/kg H 2 O, the lowermost portion of the basin is the most significant supplier; (f) CO 2 accounts for over 50% of all the species involved in the weathering reactions occurring at the Los Reartes drainage basin.

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“…Hydrogeochemical methodologies have been widely used to solve hydrogeological problems in mining [11][12][13][14], such as assessing the environmental effects of acid mine drainage (AMD) [2,[15][16][17][18][19][20], tracing the pollution sources in mining areas [21][22][23], and studying the leachate of mine tailings [24][25][26][27]. In order to investigate the evolution of the compositions in mining groundwater and the groundwater quality under the influence of ADM, the PHREEQC hydrogeochemical model and the expanded Durov diagram were performed in [28].…”

Section: Introductionmentioning

confidence: 99%

Groundwater Mixing Process Identification in Deep Mines Based on Hydrogeochemical Property Analysis

Liu

Malekian

2016

Applied Sciences

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Karst collapse columns, as a potential water passageway for mine water inrush, are always considered a critical problem for the development of deep mining techniques. This study aims to identify the mixing process of groundwater deriving two different limestone karst-fissure aquifer systems. Based on analysis of mining groundwater hydrogeochemical properties, hydraulic connection between the karst-fissure objective aquifer systems was revealed. In this paper, piper diagram was used to calculate the mixing ratios at different sampling points in the aquifer systems, and PHREEQC Interactive model (Version 2.5, USGS, Reston, VA, USA, 2001) was applied to modify the mixing ratios and model the water-rock interactions during the mixing processes. The analysis results show that the highest mixing ratio is 0.905 in the C12 borehole that is located nearest to the #2 karst collapse column, and the mixing ratio decreases with the increase of the distance from the #2 karst collapse column. It demonstrated that groundwater of the two aquifers mixed through the passage of #2 karst collapse column. As a result, the proposed Piper-PHREEQC based method can provide accurate identification of karst collapse columns' water conductivity, and can be applied to practical applications.

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Geochemical controls on ground water composition at the Cripple Creek Mining District, Cripple Creek, Colorado

Cited by 44 publications

References 10 publications

Hydrochemical appraisal of ice‐ and rock‐glacier meltwater in the hyperarid Agua Negra drainage basin, Andes of Argentina

Hydrochemical appraisal of ice‐ and rock‐glacier meltwater in the hyperarid Agua Negra drainage basin, Andes of Argentina

Mineral Weathering in a Semiarid Mountain River: Its assessment through PHREEQC inverse modeling

Groundwater Mixing Process Identification in Deep Mines Based on Hydrogeochemical Property Analysis

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