bluuebunny/crossref_metadata_2025_split huggingface dataset:
AH/SD: concepções, invisibilidades, políticas públicas e necessidades - Uma entrevista com Laura Ceretta Moreira.
Authors: Ceretta Moreira Laura , Marques Beato Canato Ana Paula , De Siqueira Pedra Nylcéa Thereza 
Published: August 2024

Uma entrevista com Laura Ceretta Moreira Laura Ceretta é licenciada em Educação Especial-UFSM/RS e Pedagogia (FIC/RS). Especialista em Neurociência na Educação (CBI of Miami), Mestra em Educação (UFSM/RS), Doutora em Educação (USP/SP), Pós-doutora em Educação (UFRJ). Professora Titular da UFPR. Docente do Programa de Pós-Graduação em Educação. Coordenadora do NAPNE - Nucleo de Atendimento às Pessoas com Necessidades Especiais (2006-2021); Coordenadora da CEPIGRAD - Coordenação de Estudos e Politicas Inclusivas na Graduação ( 2010- 2018); Coordenadora da CID - Coordenadoria de Inclusão e Diversidade da UFPR ( 2018-2021.) Editora Chefe da Revista do Conselho Brasileiro de Superdotação - ConBraSD (2018-2022). Presidente da Comissão Científica do ConBraSD( (2018-2022). Editora-Associada da Educar em Revista. Coordenadora do LAPEAHS (Laboratório de Políticas, Pesquisas e Práticas Educacionais em Altas Habilidades/Superdotação). Líder do Grupo de Pesquisa: Educação Inclusiva/ Educação Especial: Políticas, Práticas e Processos de Desenvolvimento Humano. Membro do Comité Académico Accesibilidad y Discapacidad de la Asociación de Universidades Grupo Montevideo (AUGM). Membro da Comissão Assessora em Educação Especial e Atendimento Especializado em Exames e Avaliações da Educação Básica/ INEP. Fundadora e pesquisadora da Rede Latino-americana de Inclusão Docente (RELIDO). Pesquisadora do Phoenix International Research Group.
Early Proterozoic Gold Mineralization, Alteration Assemblages, and Geochemistry of the Huron-Montezuma Prospect, Yavapai County, Arizona
Authors: O'Hara Patrick F. 
Published: August 2024

Abstract
Metavolcanic and metasedimentary rocks of the Yavapai Series (Anderson and Creasey, 1958) crop out within the area described in this study. These rocks were originally subdivided into the Ash Creek Group and Alder Group (Anderson and Blacet, 1972). Isotopic data led Anderson and others (1971) to replace the name Alder Group with the Big Bug Group, which includes all the rocks of the Yavapai Series exposed in the Prescott-Jerome area.
The Big Bug Group is divided into three formations. From oldest to youngest they are: 1) Green Gulch Volcanics; 2) Spud Mountain Volcanics; and 3) Iron King Volcanics (Anderson and Silver, 1976). The Green Gulch Volcanics are not present in the area of this study and will not be discussed. The thickness of the Big Bug Group cannot be measured with confidence because of the probability that unrecognized small folds on the flanks of major folds duplicate the section, and because of probable thinning and thickening of units during deformation (Anderson and Blacet, 1972c).
The Iron King Volcanics are composed of a thick sequence of metamorphosed, pillowed and amygdaloidal andesitic and basaltic flows. Locally the Iron King contains thin interbeds of metamorphosed rhyolitic tuff and flows units. The youngest part of the Iron King is a mixed metatuff of andesitic to rhyolitic composition that crops out in the trough of an overturned syncline.
The Iron King Volcanics have been informally subdivided into members (O'Hara, 1981; unpublished map) in order to facilitate mapping for industry. The area encompassing the Montezuma, Swindler
Geochemistry of Early Proterozoic Felsic Volcanic Rocks Associated With Gold Mineralization at the Bell Ranch Prospect, Yavapai County, Arizona
Authors: O'Hara Patrick F. 
Published: August 2024

Abstract
During 1983, one hundred-sixteen samples were collected at the Bell Ranch prospect and analyzed for major elements plus zirconium, gold, silver, arsenic, antimony, mercury, copper, lead, and zinc. Thirty-eight samples were collected from rocks interpreted to have a felsic volcanic protolith. These geochemical data are part of a regional study of Early Proterozoic hydrothermal systems associated with strata-bound mineralization. The regional study includes lithologic and alteration mapping as well as analysis of more than 1,300 geochemical samples from eleven properties. The original purpose of the study was to classify polymetallic massive sulfide types empirically and to derive generative models of the hydrothermal-geological environment associated with mineralization. During 1983, two gold-bearing, base-metal-poor hydrothermal systems were included in the database.
Geology and Gold Mineralization at the Early Proterozoic Bell Ranch Prospect, Yavapai County, Arizona
Authors: Swan Monte M. 
Published: August 2024

Abstract
The Bell Ranch prospect is 5 km southeast of the Iron King massive sulfide deposit in the Agua Fria metallic mineral district. The prospect is strata-bound, exhalative in nature, and syngenetic with submarine volcanic and sedimentary strata of the Proterozoic Yavapai Series (1750 – 1780 Ma). In this region the Yavapai Series is characterized by greenschist grade metamorphism, steeply plunging penetrative folds, and steeply dipping foliation. The rocks hosting the prospect are distal (1.5 km) to a rhyolite dome to the north, but may be proximal to hydrothermal vents associated with growth faults at the prospect.
Precious Metal Contents of Proterozoic Massive Sulfide Deposits in Arizona
Authors: Dewitt Ed 
Published: August 2024

Abstract
1.65 to 1.78 b.y.-old volcanogenlc massive sulfide deposits that are related to centers of rhyolitic activity in central Arizona were initially mined for enriched gold and silver contents of oxidized ores. Although the precious metal contents of unoxidized (protore) ores are considerably lower than those of oxidized counterparts, many unoxidized deposits today would be considered of economic value only because of their gold and silver, not just for their base metals.
Massive sulfide deposits in Arizona are located, from west to east, in the Hualapai, Bagdad, Mayer-Prescott, Jerome, and Payson areas. Production statistics for the first four areas indicate that gold grades in the oxidized ores ranged from 1.1 to 0.2 oz/ton, and in the protore from 0.7 to 0.001 oz/ton. Silver grades in the oxidized ores ranged from 8 to 3 oz/ton, and in the protore from 4.5 to 0.2 oz/ton. Total silver/gold ratios varied from 600 to 15. Gold and silver grades were highest in the Mayer-Prescott area (0.068 oz Au; 2.37 oz Ag), and decreased in the Jerome (0.043 oz Au; 1.55 oz Ag), Hualapai (0.004 oz Au; 0.61 oz Ag), and Bagdad areas (0.002 oz Au; 0.39 oz Ag). This spatial variation of precious metal grades is believed to be related to the duration of volcanism and type of associated volcanic rocks in the four areas; the variation suggests that gold and silver mineralization was controlled by magma chemistry and evolution.
Precious metal contents appear to be independent of the overall copper, lead, or zinc grade
Stratigraphy of the Mississippian Leadville Dolomite, Gilman to Leadville, Colorado
Authors: Beaty David W. , Johansing Robert J. , Thompson Tommy B. 
Published: August 2024

Abstract
The stratigraphy of the Leadville Dolomite has been much more completely characterized than previously possible through study of more than 50 drill cores in the area between Leadville and Gilman, Colorado. Data from these cores, supplemented with literature descriptions and limited outcrop observations, leads to three conclusions. First, there are three major unconformities associated with the Leadville (M-l through M-3 in order of decreasing age). M-l and M-3 are at the base and top of the Leadville, respectively; M-2 is within the Leadville. Two of these unconformities (M-2 and M-3) are very well developed throughout the Leadville-Gilman area, and have been recognized in the surrounding region; M-1 is less well developed and/or of more local extent. The M-2 surface is locally associated with distinctive lithologies (pink breccia at Gilman, black shale at Mt. Sherman) which form critical marker beds. Second, a well- defined lithostratigraphy can be identified by classifying the dolostones of the Leadville on the basis of mean dolomite grain size. The number of beds at each locality is typically 10-15, and eight of these beds can be consistently traced throughout the Gilman-Leadville area. Third, the definition of the Castle Butte and Red Cliff Members of the Leadville proposed by Nadeau (1971) is ambiguous, and has led to inconsistent results when applied away from his reference sections.
The Black Cloud Story
Authors: Smith Douglas M. 
Published: August 2024

Abstract
The discovery of the Black Cloud, mine, in Leadville, Colorado, had its beginning in the purchase of two small mines by a Philadelphia lace merchant and was achieved through, the combined efforts of the engineering and geological staffs of two major mining companies, Newmont and ASARCO. The story behind tine discovery begins in iMladelphia early in 1881 with the 53-year-old owner of a prosperous lace and embroidery business. Meyer Guggenheim knew nothing of mines and had never traveled west of the Mississippi River. He had acquired a fortune of a million dollars from various businesses and was responsible for a maturing family of seven sons. For $5,000 he purchased a one-half interest in two lackluster lead-silver mines located in California Gulch near Leadville, Colorado. Mining began in Leadville with a gold strike in 1859 and had recently boomed with, the discovery of rich Pb-Ag carbonate ores. Production of gold, silver, and lead from the district torough the end of 1880 totaled more than $35.7 million, but little of this had come from Mayer Guggenheim's mines, the A.Y. and the Minnie. During the months following his purchase, Guggenheim invested nearly $70,000 in dewatering, sinking new shafts, and -underground development, until in August, when his faith in mining investments surely must have then near collapse, he received word of a rich strike at the A.Y. By 1888 the A.Y. and the Minnie were earning him about $750,000 a year. Prior to their exhaustion in 1902 and eventual sale, the two mines netted the Guggenheim family over $15 million. This second fortune enabled them to build one of the greatest mining empires the world has known. From this beginning evolved three corporations which proved to the major forces in the minerals industry of the Western Hemisphere during the Twentieth Century: The American Smelting and Refining Company (now ASARCO Incorporated), Guggenheim Brothers (discoverer of Chuquicamata, El Salvador, and other important deposits), and the Kennecott Copper Corporation.
Geology of the Pea Ridge Mine (Field Trip Stop No. 1)
Authors: Marikos Mark A. , Nuelle Laurence M. , Seeger Cheryl M. 
Published: August 2024

Abstract
The Pea Ridge deposit, a tabular non-titaniferous iron oxide-apatite stock, discordantly cuts Middle Proterozoic felsic volcanic rocks and amphibole-pyroxene rock. The stock, in turn, is cut by mafic and felsic dikes and breccia pipes. Late stage hydrothermal fluids altered some magnetite to hematite and deposited REE and gangue minerals in breccia interstices and veins.
The Mineralogy of the Boss-Bixby, Missouri Copper-Iron-Cobalt Deposit and a Comparison to the Olympic Dam Deposit at Roxby Downs, South Australia
Authors: Hagni Richard D. , Brandom Robert T. 
Published: August 2024

Abstract
An ore microscopic examination of 137 core samples collected from 24 drill holes at the Boss-Bixby (also known as Boss) deposit show that it consists of 30 minerals (Brandom and Hagni, 1987; Brandom, 1989). A comparison of the mineralogical study of Olympic Dam as reported by Roberts and Hudson (1983) shows many similarities (Brandom and Hagni, 1985). The similarities were further investigated by an ore microscopic examination of selected ore specimens from Olympic Dam (Hagni and Brandom, 1988; Hagni and Brandom, 1989). Sims et al. (1987) have discussed the potential for Olympic Dam-type deposits in the Midcontinent based upon the geotectonic and igneous settings.
Geological Overview of the Southern St. Francois Mountains, Missouri
Authors: Max Brown v. 
Published: August 2024

Abstract
The exposed igneous rocks in the st.Francois Mountains are part of the Eastern Granite-Rhyolite Province formed between 1480 and 1440 Ma (Bickford and Mose, 1975; Bickford and others, 1981; Thomas and others, 1984; Nelson and DePaolo, 1985). This Precambrian window in the midcontinent consists of granitic plutons in the northeast and predominantly rhyolitic volcanics (with minor intermediate volcanics and mafic dikes and sills) to the west and south (Fig. 1; Tolman and Robertson, 1969). These rocks are intrepreted as a volcanic pile that was intruded by comagmatic plutons, and later tilted to the southwest and beveled by erosion; hence rocks are generally younger to the west (Allingham, 1960; Snyder and Wagner, 1961; Sides, 1978; this study). These exposures exhibit variously dissected levels from tops of thick ash-flow sheets through subcaldera plutons. Ring intrusions and central plutons adjacent to this exposed terrane are also known from the subsurface (Kisvarsanyi, 1981).
The Caledonia Native Copper Mine, Michigan
Authors: Bornhorst Theodore J. , Whiteman Richard C. 
Published: August 2024

Abstract
The Caledonia Mine, owned by Red Metal Explorations, is located near Mass, Michigan (Fig. 1). The Caledonia Mine is southwest of the Mass and Adventure Mines (Fig. 2) within an area of native copper deposits outside of the major deposits of the Keweenaw Peninsula native copper district, some 40 km southwest of a major producer, the Baltic Mine (see Fig. 3 of Bornhorst, this volume). The mines of the Mass area worked the Evergreen, Ogima, Butler, Mass, South Knowlton and Knowlton mineralized flow top lodes, termed the Evergreen Series, over a total strike length of about 5 km. The Evergreen Series produced about 33 million kg of copper at grades between 0.5 and 1.25 % (Weege and Pollack, 1971) . The Mass Mine, largest producer in the area, produced 23 million kg of refined Cu while the Adventure Mine produced 5 million kg from 1851 to 1923 (Butler and Burbank, 1929). The Butler, Evergreen, and Knowlton lodes were the most productive of the flow tops; the Butler was the largest. The other flow tops yielded only small amounts of copper.
Geology of Keweenawan Supergroup Rocks Near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan
Authors: Cannon William F. , Nicholson Suzanne W. , Hedqman Cheryl A. , Woodruff Laurel G. , Schulz Klaus J. 
Published: August 2024

Abstract
This field trip examines the geology of rocks of the Keweenawan Supergroup (1.1 Ga) and related intrusive rocks of the Midcontinent rift system (MRS) in the western part of the northern peninsula of Michigan. The combination of stops includes all formations of the Keweenawan Supergroup in this region. Examination of all described localities requires more than a single day and participants are encouraged to use this guidebook on their own to supplement the localities that will be visited on our one-day trip. Stops are numbered in stratigraphic order, from oldest to youngest, not in the order in which they will be visited.
Overview of the Mclaughlin Precious Metal Deposit, Napa and Yolo Counties, Northern California
Authors: Tosdal Richard M. , Enderlin Dean A. , Nelson Gordon C. , Lehrman Norman J. 
Published: August 2024

Abstract
A late Pliocene and Pleistocene hot-spring deposit consisting of sinter terraces underlain by veins is the site of the McLaughlin Mine in northern California. The deposit is localized along the contact between hanging wall mudstone of the Upper Jurassic Knoxville Formation (basal formation of the Upper Jurassic and Cretaceous Great Valley sequence) and serpentinized ultramafic and mafic rocks of the Middle Jurassic Coast Range ophiolite in the footwall. The Stony Creek fault separates the two units, and dips moderately northeasterly. Pliocene basaltic andesite and volcaniclastic rocks unconformably overlie the sedimentary and ophiolitic rocks in the mine area. These rocks intruded as sills to shallow depths or erupted after phreatomagmatic explosions from small volcanic centers. Magmatism was also localized along the Stony Creek fault. The volcanic rocks are part of the older phase of the Clear Lake Volcanics, which formed in a Pliocene to Holocene volcanic field that lay mostly to the west and northwest.
The deposit consists of two epithermal orebodies, the north and south orebodies, which are connected by a narrow 2one of mineralization. The oldest hydrothermal event recognized in the deposit was adularization of the hanging wall mudstone and silicification of the footwall serpentinite. Alteration formed a roughly tabular body that is discontinuous along the Stony Creek fault. Basaltic andesite sills, plugs, and flows are propylitized and locally argillized. Precious metals are present in opal, chalcedony, and quartz veins that cut brittle rocks, including altered rocks, basaltic andesites, and tabular lithons present in the footwall serpentinite. The south
Mclaughlin Gold and KnoxVille Mercury Deposits
Authors: Rytuba James J. , Enderlin Dean A. , Donnelly-Nolan Julie M. , McLaughlin Robert 
Published: August 2024

Abstract
This tour begins in Clearlake Highlands and proceeds to the Homestake Mining Company’s McLaughlin Mine and the Knoxville mercury deposit. The route for the trip is shown in Figure 1.
Geology of the Tusc Deposit, Nevada
Authors: Doyle-Kunkel Micheline A. 
Published: August 2024

Abstract
The Tusc gold deposit is situated along the Carlin Trend of northeastern Nevada, within Eureka County, approximately 8 miles northwest of the town of Carlin. Tusc lies within the Maggie Creek Subdistrict, along the surface trace of the Good Hope fault approximately 1.5 miles northwest of the Gold Quarry deposit. A significant oxide gold reserve (826,780 troy ounces) is present at Tusc, disseminated in Paleozoic carbonate and siliciclastic rocks.
Two geologically dissimilar mineralized zones are recognized within the deposit: (1) the Structure zone, a highly sheared zone of anastomosing reverse faults within the Good Hope fault system, striking N40W, dipping 45-60 degrees NE, with gold primarily hosted in siliceous rocks; and, (2) the Main zone, a bedding plane/fracture-controlled dissemination of gold in the hanging wall of the Good Hope fault, hosted within decalcified carbonate rocks (Crouse and others, 1991).
Additional ore controls include a mineralized low-angle structure and mineral boundaries along the northwest-trending Seldom Seen and northeast-trending K-W and Copper King fault systems. Wallrock alteration and mineral deposition are spatially related to a zone of intense decalcification. Silicification along the Good Hope fault, some alunite veins, late argillization and supergene oxidation are also present (Arkell, 1991; Crouse and others, 1991).
Carlin Trend Geophysical Review
Authors: Wright James 
Published: August 2024

Abstract
A total of six (6) color images with overlays are located at the end of this paper. The color images; including aeromagnetic, gravity, and terrain data sets, are grouped to cover either the entire state of Nevada or a detailed area encompassing the Carlin Trend. State images are at 1:3,750,000 scale while the detailed images are at 1:750,000 scale. Both are annotated with UTM coordinates. Following the discussion are a number of references which address some of the specific features shown on the overlays or discussed in the text. These references as well contain extensive reference lists for additional information.
Gulf Coast Salt Dome Sulphur
Authors: Edwards A. F. 
Published: August 2024

Abstract
The salt domes of the Texas and Louisiana Gulf Coast have produced an incredible amount of wealth in the form of oil and gas, as well as native sulphur. This belt of domes is distinct from the domes in the interior salt basins (Fig. 1) which have not produced sulphur despite the common presence of cap rock that is similar to the host rock for the commercial sulphur concentrations.
Sulphur (the spelling used by the sulphur industry) is also known as brimstone from the Anglo Saxon byrn stone for burning stone and is referred to as the Queen of the industrial minerals. Sulphur is an essential requirement for the fertilizer and galvanizing industries and the amount used mirrors a country’s GNP, reflecting that a growing and robust economy consumes a lot of sulphur. A current summary of the sulphur industry is provided by Wessel (1994).
The Gulf Coast sulphur industry is a relatively young one and was pioneered by Herman Frasch who perfected his technique of Frasch sulphur production in 1902 using superheated water pumped into the sulphur-bearing formation through a nested casing string to melt sulphur and then recover it through an inner casing string (Fig. 2). The Frasch sulphur industry is young enough that the author has worked with geologists who personally knew Frasch.
From the outset of sulphur production, geologists attempted to explain the its origin and its distinctive occurrence in a salt dome cap rock section that consists of anhydrite and gypsum overlain by a vuggy
Geology of the Haile Gold Mine
Authors: Maddry John W. , Kilbey Thomas R. 
Published: August 2024

Abstract
The Haile gold mine is located in north-central South Carolina, approximately mid-way between Columbia, SC and Charlotte, NC, near Kershaw in Lancaster County (Figure 1).
The Haile gold mine has a long and colorful history. Gold was first discovered in 1827 or 1828 as placer in Haile Gold Mine Creek. The lode sources were discovered during the early years of placer mining and activity soon shifted to shallow open-pit and underground mining. The most productive periods of mining occurred between 1888-1908 and 1936-1942. Piedmont Mining Company resumed mining in 1985 and recovered 85,000 ounces of gold between April, 1985 and August 1991 when mining ceased. Total gold production from 1827 to 1991 is estimated at over 360,000 ounces (Speer and Maddry, 1992) mined from about eleven orebodies. The mine has also produced minor quantities of sulfur from pyrite and over 400,000 tons of Mineralite, a white clay-rich, industrial mineral product used mainly as a paint filler (Maddry and Speer, 1993).
Recent exploration by an Amax Gold Inc. and Piedmont Mining Co. joint venture has identified new gold reserves in six orebodies (Figure 2) that currently total 8,736,000 tons of proven and probable ore at an average grade of 0.089 ounces gold per ton (opt) or 780,000 ounces gold. These reserves use a variable grade cut-off of about 0.025 opt gold, and the waste to ore ratio is 5.61:1. Most of these reserves are contained within sulfide ore. The total gold resource, at the same cut-off, is 17,000,000 tons at an