Data on major and minor elements in host rocks and ores, Carlin Gold Deposit, Nevada

Radtke, Arthur S.; Heropoulos, Chris; Fabbi, B. P.; Scheiner, Bernard J.; Essington, Mel

doi:10.2113/gsecongeo.67.7.975

Cited by 16 publications

(7 citation statements)

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“…Graf(1960) reported that carbonate rocks normally contain only 1 or 2 ppm of arsenic unless there is an abundance of carbonaceous material, iron oxides, or sulfides present. Information derived from samples of the fresh unmineralized Roberts Mountains Formation around Carlin (Radtke, Heropoulos, Fabbi, Scheiner, and Essington, 1972) indicates that this observation holds true here. They reported that although only 2 out of 15 samples had detectable amounts of arsenic (10 ppm), some rocks contained as much as 0.5 percent syngenetic pyrite and as much as 1 percent organic carbon.…”

Section: Vjsupporting

confidence: 67%

“…The fact that anomalous amounts of barium, copper, molybdenum, lead, and zinc occur in areas of disseminated gold mineralization has been pointed out by Akright, Radtke, and Grimes (1969); Radtke, Heropoulos, Fabbi, Scheiner, and Essington (1972); and Wrucke and Armbrustmacher (1975). Comparison of data for normal limestones and unmineralized host rocks with mineralized rocks (table 5) shows that, except for barium, these elements are concentrated from about 4 to 10 times in the ores.…”

Section: Statistical Analysis Of Gold Barium Copper Molybdenum Lementioning

confidence: 83%

“…During the course of the geologic and geochemical study of the Carlin gold deposit, which began in 1968, a large amount of chemical data has been gathered on the host rocks and gold ores. Although most of these data were summarized in a paper by Radtke, Heropoulos, Fabbi, Scheiner, and Essington (1972), none of the data had been treated statistically. This paper presents the results of a statistical study made by Harris (1974), of certain minor elements in the unoxidized gold ores, together with basic geologic, mineralogic, and geochemical information provided by Radtke.…”

Section: Introductionmentioning

confidence: 99%

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Statistical studies of selected trace elements with reference to geology and genesis of the Carlin gold deposit, Nevada

Harris¹,

Radtke²

1976

Professional Paper

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Linear regression and discriminant analyses techniques were I applied to gold, mercury, arsenic, antimony, barium, copper, molybdenum, lead, zinc, boron, tellurium, selenium, and tungsten analyses from drill holes into unoxidized gold ore at the Carlin gold mine near Carlin, Nev. The statistical treatments employed were used to judge proposed hypotheses on the origin and geochemical paragenesis of this disseminated gold deposit.

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Section: Vjsupporting

confidence: 67%

Section: Statistical Analysis Of Gold Barium Copper Molybdenum Lementioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

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Statistical studies of selected trace elements with reference to geology and genesis of the Carlin gold deposit, Nevada

Harris¹,

Radtke²

1976

Professional Paper

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“…Two mineralogic forms of Au have been described in the rims: structurally bound (solid solution) and submicron inclusions (nanoparticles) of native Au. Although early EMPA and SEM studies suggested the presence of both types of Au (Radtke et al, 1972;Wells and Muellens, 1973), it was not until 1989 that submicron-sized (5-20 nm) Au particles were imaged using HRTEM (Bakken et al, 1989). X-ray absorption near-edge structure (XANES) and extended x-ray absorption fine structure (EXAFS) measurements by Simon et al (1999a) confirmed the presence of the two forms of Au (Au 0 and Au ϩ1 ) in arsenian pyrite.…”

Section: Previous Experimental and Analytical Studiesmentioning

confidence: 99%

Solubility of gold in arsenian pyrite

Reich

Kesler

Utsunomiya

et al. 2005

Geochimica et Cosmochimica Acta

812

459

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“…(1966) and Hill et al (1986), but these data are not discussed in relation to formational processes. Sullivan (1984) Other studies by Akright et al (1969), Radtke et al (1972), and Harris and Radtke (1976) contain extensive data on rocks from the Carlin deposit but do not specifically discuss jasperoid geochemistry. Radtke (1985), however, described siliceous alteration at the Carlin deposit and presented geochemical analyses for silicified carbonate rocks in the deposit.…”

mentioning

confidence: 99%

Comparative elemental and oxygen isotope geochemistry of jasperoid in the northern Great Basin; evidence for distinctive fluid evolution in gold-producing hydrothermal systems

Holland¹,

Beaty²,

Snow³

1988

Economic Geology

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This comparative geochemical study of jasperoid in the northern Great Basin is based on 65 samples from 10 Carlin-type gold deposits and 22 similar but apparently barren hydrothermal systems. Multielement geochemistry coupled with oxygen isotope data indicate that hydrothermal fluids in barren and mineralized systems evolved in different ways, and that there are fundamental geochemical differences among the various gold-producing deposits of the area.Much of the variation in the jasperoid geochemical data can be explained in terms of seven abstract end-member components obtained through factor analysis. Three of these components (factors) dominate the results and are related to common products of alteration and mineralization in epithermal systems of the northern Great Basin. Element associations for these factors are: factor 1: TiO•, A12Oa, La, K20, Sr, Fe•Oa, Th; factor 2: Au, Ag, Sb, SiOn, As, Pb; and factor 3: W, B, V, Zn, Co, Au, CaO, Ni, Mn, Cu.Samples from barren systems are predominantly associated with high factor I loadings, whereas samples from mineralized systems are generally characterized by high loadings of factor 2 and/or factor 3. Factor I is related to residual, argillically altered, noncarbonate constituents in original host rocks. Factor 2 is related to hydrothermal silica (jasperoid) and is characterized by many of the so-called pathfinder elements used in Great Basin exploration. Factor 3, although characterized by a transition metal assemblage, is related to syngenetic inclusions of hydrothermal calcite within jasperoidal silica.High factor 2 loadings are associated with samples from the Windfall and Northumberland deposits but not with samples from other gold-producing systems in the study. Factor 3, on the other hand, is the dominant component in most samples from the Carlin, Gold Quarry, Maggie Creek, Pinson, and Preble deposits. It therefore appears that there are at least two geochemically discernible types of gold deposits in the northern Great Basin. These types are represented in this study by the Windfall deposit (factor 2) at one extreme and by the Gold Quarry deposit (factor 3) at the other. Other deposits, including Alligator Ridge and Tonkin Springs, are intermediate between these extremes. In this study, the hydrothermal geochemistry of the Jerritt Canyon samples is obscured by a chert-related compositional factor. Jasperoid samples from gold-producing ore deposits have filSO values ranging from 3 to 20 per mil, whereas jasperoid samples from analogous barren systems have fi•sO values ranging from 3 to 11 per mil. This indicates that at least some fluids in ore-related hydrothermal systems were relatively lsO rich compared to those in barren systems. Jasperoid samples having high •sO values invariably have high factor 3 loadings. The elemental and isotopic geochemistry ofjasperoid samples indicates that hydrothermal fluids in individual gold-producing systems of the northern Great Basin evolved in differentways. It appears that high CO• contents were a critical distinguishing ...

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Data on major and minor elements in host rocks and ores, Carlin Gold Deposit, Nevada

Cited by 16 publications

References 0 publications

Statistical studies of selected trace elements with reference to geology and genesis of the Carlin gold deposit, Nevada

Statistical studies of selected trace elements with reference to geology and genesis of the Carlin gold deposit, Nevada

Solubility of gold in arsenian pyrite

Comparative elemental and oxygen isotope geochemistry of jasperoid in the northern Great Basin; evidence for distinctive fluid evolution in gold-producing hydrothermal systems

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