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![Stratigraphic column for volcanic rocks at the Productora deposit (modified from Fox, 2000) with descriptions for lithologies observed in the current study.]()
![Location and geology of the Productora Cu-Au-Mo deposit, Chile (redrawn from Escolme, 2016). A) Location map showing Atacama fault system from Brown et al. (1993) with inset map of northern Chile showing location of Productora (red star). B) Map showing local geology and major structures from surface mapping. Also shown is a surface projection of the mineralization limits (defined as >0.1% Cu projected to surface) and location of study sections at 6822215 and 6820850 mN. Modified from Ray and Dick (2002), Beeson (2012), and J. Beeson, pers. comm. (2015). Cross sections at C) 6822215 mN and D) 6820850 mN showing geology interpreted from graphic core logging, core photo logging, and immobile element lithogeochemistry. Breccia domains reflect variations in texture and internal clast organization; protolith textures were largely obscured by alteration and brecciation in these domains. While several phases of basalt-andesite and dacite dikes are present, for clarity these are not shown.]()
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![Schematic cross sections illustrating key aspects of the genetic model for Productora. A) Regionally, thick sequences of subaerial volcanic rocks were deposited in the Mesozoic magmatic arc under extensional to transtensional conditions with coeval plutonism. B) Locally, intrusion of the Cachiyuyito stock is spatially and temporally associated with large-scale sodic-calcic alteration, magnetite-apatite mineralization (fluid source and evolution unconstrained), and emplacement of the Productora magmatic-hydrothermal breccia complex and Cu-Au-Mo mineralization. Local faults associated with the regional Atacama fault zone were active throughout. C) Emplacement of the Alice porphyry and associated porphyry Cu-Mo mineralization and advanced argillic lithocap (absolute age undetermined). Intrusion of barren Zapallo porphyry and Ruta Cinco batholith. Current erosion level indicated.]()
![Workflow for classification of samples by dominant alteration type from whole-rock geochemistry, based on case study data set from Productora Cu-Au-Mo deposit, Chile.]()
![Regional map of northern Chile showing the location of Productora in relation to the Atacama fault system and Mesozoic magnetite-apatite, IOCG, and porphyry deposits. Atacama fault system trace from Brown et al. (1993) and deposit locations from Naslund et al. (2002), Sillitoe (2003), and Maksaev et al. (2007).]()
![Initial 87Sr/86Sr isotopic data for tourmaline from Productora, compared to other Mesozoic deposits in northern Chile, as well as major crustal rocks of northern Chile and Mesozoic seawater (Veizer et al., 1999). Diagram modified from Cooke et al. (2011). Data sourced from 1Sillitoe (1987), 2Ramirez et al. (2008), 3Rogers and Hawkesworth (1989), and 4McNutt et al. (1975), and Lucassen et al. (2002), Morata and Aguirre (2003), Morata et al. (2008), and Girardi (2014).]()
![Total alkali-silica diagram (Le Maitre et al., 2002) showing the compositions of Cretaceous igneous rocks associated with porphyry (blue symbols) and IOCG deposits (red symbols) in the Coastal Cordillera of northern Chile; Productora (purple symbol) shows characteristics of both porphyry and IOCG deposits. Data are from Table 3, excluding the following samples for reasons of extreme alteration or lack of correlation with the main suites: CAS-4 (clasts in igneous breccia); CAS-8, 9, 10, 11 (regional plutons, relationship to Casualidad deposit unclear); CDA-7 (Quebrada Marquesa Formation, andesitic country rock); MV-10 (strong potassic alteration); MV-11, MV-12 (altered volcanic rock outcrops, relationship to Mantoverde deposit unclear); PR-1 (Cachiyuyito stock, possibly unrelated). All of the remaining samples shown are nevertheless altered to varying degrees, and we attribute the apparently alkaline compositions of some rocks to this effect.]()
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1-20 OF 27 RESULTS FOR
Productora Deposit
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Journal Article
Predictive Models of Mineralogy from Whole-Rock Assay Data: Case Study from the Productora Cu-Au-Mo Deposit, Chile Available to Purchase
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 December 2019
Economic Geology (2019) 114 (8): 1513–1542.
... mineralogy, a predictive quantitative approach. Both these techniques were tested using a data set of multielement geochemistry and mineralogy measured by semiquantitative X-ray diffraction data from the Productora Cu-Au-Mo deposit, Chile. Using geochemistry, samples from Productora were classified...
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Includes: Supplemental Content
Journal Article
The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex with Both Porphyry and Iron Oxide Cu-Au Affinities Available to Purchase
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 May 2020
Economic Geology (2020) 115 (3): 543–580.
...Angela Escolme; David R. Cooke; Julie Hunt; Ron F. Berry; Roland Maas; Robert A. Creaser Abstract The Productora Cu-Au-Mo deposit is hosted by a Cretaceous hydrothermal breccia complex in the Coastal Cordillera of northern Chile. The current resource, which includes the neighboring Alice Cu-Mo...
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Includes: Supplemental Content
Image
Stratigraphic column for volcanic rocks at the Productora deposit (modified... Available to Purchase
in The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex with Both Porphyry and Iron Oxide Cu-Au Affinities
> Economic Geology
Published: 01 May 2020
Fig. 5. Stratigraphic column for volcanic rocks at the Productora deposit (modified from Fox, 2000 ) with descriptions for lithologies observed in the current study.
Image
Location and geology of the Productora Cu-Au-Mo deposit, Chile (redrawn fro... Available to Purchase
in Predictive Models of Mineralogy from Whole-Rock Assay Data: Case Study from the Productora Cu-Au-Mo Deposit, Chile
> Economic Geology
Published: 01 December 2019
Fig. 2. Location and geology of the Productora Cu-Au-Mo deposit, Chile (redrawn from Escolme, 2016 ). A) Location map showing Atacama fault system from Brown et al. (1993) with inset map of northern Chile showing location of Productora (red star). B) Map showing local geology and major
Journal Article
Contrasting Tectonic Settings and Sulfur Contents of Magmas Associated with Cretaceous Porphyry Cu ± Mo ± Au and Intrusion-Related Iron Oxide Cu-Au Deposits in Northern Chile * Open Access
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 March 2017
Economic Geology (2017) 112 (2): 295–318.
.... Fifty-four samples of volcanic and intrusive igneous rocks associated with the Carmen de Andacollo, Frontera, and Dos Amigos porphyry Cu ± Au ± Mo deposits, the transitional Productora deposit, and the Candelaria, Casualidad, Espino, and Mantoverde IOCG deposits from the Coastal Cordillera of northern...
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Includes: Supplemental Content
Image
Schematic cross sections illustrating key aspects of the genetic model for ... Available to Purchase
in The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex with Both Porphyry and Iron Oxide Cu-Au Affinities
> Economic Geology
Published: 01 May 2020
Fig. 24. Schematic cross sections illustrating key aspects of the genetic model for Productora. A) Regionally, thick sequences of subaerial volcanic rocks were deposited in the Mesozoic magmatic arc under extensional to transtensional conditions with coeval plutonism. B) Locally, intrusion
Image
Workflow for classification of samples by dominant alteration type from who... Available to Purchase
in Predictive Models of Mineralogy from Whole-Rock Assay Data: Case Study from the Productora Cu-Au-Mo Deposit, Chile
> Economic Geology
Published: 01 December 2019
Fig. 5. Workflow for classification of samples by dominant alteration type from whole-rock geochemistry, based on case study data set from Productora Cu-Au-Mo deposit, Chile.
Image
Regional map of northern Chile showing the location of Productora in relati... Available to Purchase
in The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex with Both Porphyry and Iron Oxide Cu-Au Affinities
> Economic Geology
Published: 01 May 2020
Fig. 1. Regional map of northern Chile showing the location of Productora in relation to the Atacama fault system and Mesozoic magnetite-apatite, IOCG, and porphyry deposits. Atacama fault system trace from Brown et al. ( 1993 ) and deposit locations from Naslund et al. ( 2002 ), Sillitoe ( 2003
Image
Initial 87 Sr/ 86 Sr isotopic data for tourmaline from Productora, compare... Available to Purchase
in The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex with Both Porphyry and Iron Oxide Cu-Au Affinities
> Economic Geology
Published: 01 May 2020
Fig. 22. Initial 87 Sr/ 86 Sr isotopic data for tourmaline from Productora, compared to other Mesozoic deposits in northern Chile, as well as major crustal rocks of northern Chile and Mesozoic seawater ( Veizer et al., 1999 ). Diagram modified from Cooke et al. ( 2011 ). Data sourced from 1
Image
Total alkali-silica diagram ( Le Maitre et al., 2002 ) showing the composit... Open Access
in Contrasting Tectonic Settings and Sulfur Contents of Magmas Associated with Cretaceous Porphyry Cu ± Mo ± Au and Intrusion-Related Iron Oxide Cu-Au Deposits in Northern Chile *
> Economic Geology
Published: 01 March 2017
Fig. 3. Total alkali-silica diagram ( Le Maitre et al., 2002 ) showing the compositions of Cretaceous igneous rocks associated with porphyry (blue symbols) and IOCG deposits (red symbols) in the Coastal Cordillera of northern Chile; Productora (purple symbol) shows characteristics of both
Journal Article
A Special Issue Dedicated to Geometallurgy: Preface Available to Purchase
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 December 2019
Economic Geology (2019) 114 (8): 1473–1479.
.... , and Potma , W. , 2019 , Predictive models of mineralogy from whole-rock assay data: Case study from the Productora Cu-Au-Mo deposit, Chile : Economic Geology , v. 114 , p. 1513 – 1542 . Frenzel , M. , Bachmann , K. , Carvalho , J. , Relvas , J. , Pacheco , N. , and Gutzmer...
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Journal Article
Introduction to this special section : Latin America Available to Purchase
Journal: The Leading Edge
Publisher: Society of Exploration Geophysicists
Published: 01 June 2009
The Leading Edge (2009) 28 (6): 656–657.
... of silver in the world. The paper by Robertson and Megaw shows the combined use of aeromagnetic data, gravity information, and satellite images to delineate and drill a carbonate replacement deposit with large amounts or concentrations of silver, lead, and zinc in the state of Chihuahua, Mexico...
Journal Article
Ores Drive Operations—Economic Geology Is the Foundation of Geometallurgy Available to Purchase
Journal: SEG Discovery
Publisher: Society of Economic Geologists
Published: 01 April 2022
SEG Discovery (2022) (129): 30–43.
... Geology , v. 1 , p. 77 – 82 . King , G.S. , and Macdonald , J.L. , 2016 , The business case for early-stage implementation of geometallurgy—an example from the Productora Cu-Mo-Au deposit, Chile : International Geometallurgy Conference, 3rd, Australasian Institute for Mining...
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Journal Article
The Application of Geologic Mapping, Core Logging, and 3-D Geoscientific Data Integration in the Exploration and Resource Expansion of Porphyry Copper-(Gold) Deposits: Examples from Recent Discoveries in Ecuador and Chile Available to Purchase
Journal: SEG Discovery
Publisher: Society of Economic Geologists
Published: 01 October 2022
SEG Discovery (2022) (131): 13–24.
... , Predictive models of mineralogy from whole-rock assay data: Case study from Productora Cu-Au-Mo deposit, Chile : Economic Geology , v. 114 , no. 8 , p. 1513 – 1542 . Fowler , A. , and Bascombe , L. , 2021 , Cascabel property, Alpala porphyry copper-gold-silver deposit—mineral resource...
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Journal Article
A study of pollen from light honeys produced in Piauí State, Brazil Available to Purchase
Journal: Palynology
Publisher: AASP -The Palynological Society
Published: 01 March 2015
Palynology (2015) 39 (1): 110–124.
... of pollen types, established by Louveaux et al. (1978) . The concept of pollen type adopted followed the recommendations of the authors Joosten & de Klerk (2002) and Santos (2011) . The identification of pollen types was performed by comparison with reference slides deposited in the pollen...
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Journal Article
Mapping Magmatic and Hydrothermal Processes from Routine Exploration Geochemical Analyses Available to Purchase
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 May 2020
Economic Geology (2020) 115 (3): 489–503.
... from ore-forming arc magmas : Economic Geology , v. 110 , no. 1 , p. 241 – 251 . Escolme , A. , Berry , R.F. , Hunt , J. , Halley , S. , and Potma , W. , 2019 , Predictive models of mineralogy from whole-rock assay data: Case study from Productora Cu-Au-Mo deposit, Chile...
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Journal Article
Quadrivalent praseodymium in planetary materials Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 2020
American Mineralogist (2020) 105 (12): 1802–1811.
.... ( 2015 ) Mid Cretaceous Cu-Au (Mo) mineralization in the Vallenar district: new Re-Os age constraints from Productora deposit, northern Chile. XIV Congreso Geológico Chileno , p. 421 – 424 , La Serena . Martin , R.L. ( 1974 ) Structural theory for non-stoicheiometry. Part I. Defect...
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Journal Article
Plant sources for bee pollen load production in Sergipe, northeast Brazil Available to Purchase
Journal: Palynology
Publisher: AASP -The Palynological Society
Published: 01 June 2014
Palynology (2014) 38 (1): 90–100.
... then dehydrated with glacial acetic acid (10 mL) for 60 minutes during 24 hours, and subsequently centrifuged. The pollen was acetolysed, following Ertdman (1960) . Five permanent slides of acetolysed pollen were mounted from each sample. At the end of the analyses, all slides were deposited...
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Journal Article
Quantitative Mineral Mapping of Drill Core Surfaces II: Long-Wave Infrared Mineral Characterization Using μ XRF and Machine Learning Open Access
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 June 2021
Economic Geology (2021) 116 (4): 821–836.
... : Economic Geology , v. 98 , p. 1069 – 1105 . Escolme , A. , Berry , R.F. , Hunt , J. , Halley , S. , and Potma , W. , 2019 , Predictive models of mineralogy from whole-rock assay data: Case study from the Productora Cu-Au-Mo deposit, Chile : Economic Geology , v. 114 , p...
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Journal Article
Pollen types in honey produced in caatinga vegetation, Brazil Available to Purchase
Journal: Palynology
Publisher: AASP -The Palynological Society
Published: 22 July 2020
Palynology (2020) 44 (3): 405–418.
... identified using slides deposited in the pollen collection of the Laboratório de Micromorfologia Vegetal at the Universidade Estadual de Feira de Santana (UEFS); the slides of the present study were deposited in this collection. In addition, atlases and other works were also used to identify the botanical...
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