Arc-related porphyry molybdenum deposit model

Taylor, Ryan D.; Hammarstrom, Jane M.; Piatak, Nadine M.; Seal, Robert R.

doi:10.3133/sir20105070d

Cited by 19 publications

(27 citation statements)

References 37 publications

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“…The enrichment of Bi, Pb and Zn in the polymetallic veins in the studied prospect is also a common feature of many porphyry Mo deposits worldwide [38]. Furthermore, these deposits are known to be enriched in elements like Sn, Bi, Zn, Pb and Ag [38,44].…”

Section: Genetic Implicationsmentioning

confidence: 96%

“…A post-subduction tectonic environment of porphyry formation has been recognized for porphyry deposits worldwide [37] and has implications for some porphyry molybdenum deposits such as the 27 Ma old Quartz Hill, Alaska (USA) [38], the 33 Ma old Mačkatica (Serbia) [39], the 18 Ma old Pinarbaşi (Turkey) [40], the 4 Ma old Malala (Indonesia) [41] and the Shapinggou and Tianmugou, China, which were formed in a post collisional tectonic setting [42].…”

Section: Genetic Implicationsmentioning

confidence: 99%

Section: Genetic Implicationsmentioning

confidence: 99%

“…Aplitic textures in the microgranite porphyry, which include micrographic and spherulitic quartz-feldspar intergrowths, are common in many porphyry Mo deposits [38,45]. According to Taylor et al [38] the formation of aplitic texture is regarded as a quenching feature because of rapid ascent and loss of volatiles from the magma due to rapid crystallization of the viscous melt. Candela [45] considered textural variants like those present at Aisymi-Leptokarya microgranite (i.e., porphyritic, aplitic, micrographic and dendritic, acicular and/or skeletal crystals) to be indicative of undercooling, volatile exsolution and ore formation.…”

Section: Genetic Implicationsmentioning

confidence: 99%

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A New Porphyry Mo Mineralization at Aisymi-Leptokarya, South-Eastern Rhodope, North-East Greece: Geological and Mineralogical Constraints

et al. 2018

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A new porphyry Mo prospect has been discovered in the Aisymi-Leptokarya area, along the southern margin of the Byala Reka-Kechros metamorphic dome, south-eastern (SE) Rhodope metallogenic zone. The study area is dominated by an Oligocene felsic dike complex, which hosts the porphyry Mo mineralization and intrudes into upper Eocene sandstones-marls and the Leptokarya monzodiorite pluton. The Aisymi-Leptokarya felsic dike complex displays a rhyodacitic to dacitic composition with post-collisional affinities. The porphyry Mo mineralization occurs in the form of porphyry-style quartz stockworks in the felsic dike complex associated with potassic alteration characterized by hydrothermal K-feldspar. The ore minerals consist mainly of pyrite, molybdenite, kesterite, bismuthinite and galena within both the stockwork and the rock matrix. Bulk ore analyses indicate enrichment in Mo (up to 215 ppm), Se (up to 29 ppm), Bi (up to 8 ppm) and Sn (up to 14 ppm) in the porphyry quartz veins. Late-stage, north-east (NE-) and north-west (NW-)trending milky quartz intermediate-sulfidation epithermal veins with base metals, crosscut previous vein generations and are characterized by Ag, Sn and Te anomalies. The Aisymi-Leptokarya porphyry Mo prospect is set in a back-arc geotectonic regime and shares similarities to other post-subduction porphyry molybdenum deposits elsewhere. These deposits are characterized by fluids with low CO 2 /H 2 O, F/Cl and K/Na ratios and a low Rb-Nb and moderate to high Sr signature. They were originally described from the Endako deposit, British Columbia, Canada [5]; (2) Climax-type (or low-fluorine) is rift related. This deposit type is characterized by a high F/Cl ratio and significant variations in their CO 2 /H 2 O and K/Na ratios [6]. They also display high Rb-Nb geochemical signatures; (3) Dabie-type was recently described by Mi et al. [7] named after the Dabie Shan orogenic belt, China and occurs in collision to post-collision environments. These deposits are genetically linked to high-K calc-alkaline to shoshonitic magmas, in syn-to post-collisional tectonic settings and are related to fluids with high CO 2 /H 2 O, F/Cl and K/Na ratios. The class is originally represented by the giant Qian'echong Mo deposit, east China [7]. Alteration patterns in porphyry Mo deposits usually comprise an internal zone dominated by potassic alteration, which grades outwards into silicic/sericitic, propylitic and more distally to argillic assemblages [8][9][10].The Thrace metallogenic province in NE Greece hosts a number of mineralization types including porphyry, high/intermediate-sulfidation, epithermal and other intrusion related systems, containing significant amounts of precious and critical metals [11][12][13]. Among them, many porphyry-type deposits are enriched in molybdenum, along with other commodities (e.g., Cu, Au, Re). Characteristic examples are the Pagoni Rachi, Konos, Myli, Maronia and Melitena deposit/prospects [11][12][13][14][15][16].A new porphyry Mo prospect was recently discovered [17] in the po...

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Section: Genetic Implicationsmentioning

confidence: 96%

Section: Genetic Implicationsmentioning

confidence: 99%

Section: Genetic Implicationsmentioning

confidence: 99%

Section: Genetic Implicationsmentioning

confidence: 99%

See 2 more Smart Citations

A New Porphyry Mo Mineralization at Aisymi-Leptokarya, South-Eastern Rhodope, North-East Greece: Geological and Mineralogical Constraints

et al. 2018

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“…The different Gaussian variables appear to be cross-correlated (Table 5), especially between copper and molybdenum and between lead and zinc. These correlations can be explained because of similar geochemical and paragenetic properties in arc-related copper molybdenum deposits (Taylor et al, 2012); the marginal binormality of the pairs of transformed variables is validated by examining their scatter diagrams, which exhibit an elliptic shape (Fig. 3).…”

Section: Geostatistical Modelingmentioning

confidence: 99%

Comparing sequential Gaussian and turning bands algorithms for cosimulating grades in multi-element deposits

Paravarzar

Emery

Madani

2015

Comptes Rendus. Géoscience

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Artículo de publicación ISIStochastic simulation is increasingly used to map the spatial variability in the grades of elements of interest and to assess the uncertainty in the mineral resources and ore reserves. The practical implementation requires specifying a stochastic model, which describes the spatial distribution of the grades, and an algorithm to construct realizations of these grades, viewed as different possible outcomes or scenarios. In the case of the Gaussian random field model, a variety of algorithms have been proposed in the past decades, but their ability to reproduce the model statistics is often unequal. In this paper, we compare two such algorithms, namely the turning bands and the sequential algorithms. The comparison is hold through a synthetic case study and a real case study in a porphyry copper deposit located in southeastern Iran, in which it is of interest to jointly simulate the copper, molybdenum, silver, lead and zinc grades. Statistical testing and graphical validations are realized to check whether or not the realizations reproduce the features of the true grades, in particular their direct and cross variograms. Sequential simulation based on collocated cokriging turns out to poorly reproduce the cross variograms, while turning bands proves to be accurate in all the analyzed cases.Chilean Commission for Scientific and Technological Research 113008

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Porphyry Molybdenum Prospectivity in the Zhongdian Arc, SW China: Use of Singularity and Factor Analyses for Resource Assessment

et al. 2021

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Arc-related porphyry molybdenum deposit model

Cited by 19 publications

References 37 publications

A New Porphyry Mo Mineralization at Aisymi-Leptokarya, South-Eastern Rhodope, North-East Greece: Geological and Mineralogical Constraints

A New Porphyry Mo Mineralization at Aisymi-Leptokarya, South-Eastern Rhodope, North-East Greece: Geological and Mineralogical Constraints

Comparing sequential Gaussian and turning bands algorithms for cosimulating grades in multi-element deposits

Porphyry Molybdenum Prospectivity in the Zhongdian Arc, SW China: Use of Singularity and Factor Analyses for Resource Assessment

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