| Rantitsch, G., Jochum, J., Sachsenhofer, R. F., Russegger, B., Schroll, E., Horsfield, B. (1999) Hydrocarbon-bearing fluid inclusions in the Drau Range (Eastern Alps, Austria): implications for the genesis of Bleiberg-type Pb-Zn deposits. Mineralogy and Petrology, 65 (3) 141-159 doi:10.1007/bf01161958 | Journal (article/letter/editorial) | Printed in Austria Hydrocarbon-bearing fluid inclusions in the Dra.u Range (Eastern Alps, Austria): implications...Geowissenschaften, Montanuniversit/it, Leoben, Austria 2Institut ftir Mineralogie und Lagerst~ttenlehre...Mineralogie und Kristallographie, Universit/it Wien, Austria 4 Institut ftir Erd61 und organische Geochemie...quartz crystals of the Drau Range (Eastern Alps, Austria). Organic matter, as liquid or solid petroleum-type...Three ore samples are from the "Bleiberg-Kreuth" mine (sample L1, L6, L8) and one sample from the "Jauken" | | | Journal (article/letter/editorial) | includes finely crystalline hematite, goethite, Mn-oxide films and illite formed by alteration of muscovite...smectite-Iike clays (possibly smectite, possibly with some illite) growing out from corroded glass (even contrast...clay. Some regions of glass contain dispersed hematite crystals, identified by their SAED patterns and...and composition. In other regions, hematite coexists with goethite in aggregates of glass alteration products...some intergrowth with illite. While in theory it is possible to distinguish illite from smectite using | | | Journal (issue) | worldwide localities, notably: Australia; Carinthia, Austria; Brazil; Cameroon; Canada: Newfoundland,...in 1963 I have had an interest in the Terlingua district mercury minerals but because many of them selfdestruct...microscopic crystals. Most of them come from the Mariposa mine which was the original town site for Terlingua....moved several miles eastward to be near the Chisos mine after the Marfa Mariposa mining company shut down...but there is even less remaining at the Mariposa mine except an open pit and some underground workings | | | Book | illustrated Encyclopedi of the World’s Rocks and Mine re L A R E N MI OF THE WORLD Rudolf Duda and...mineral particles (eg inclusions of chlorite and hematite in jasper). Allochromatic minerals display other...unaltered crystals of the same mineral. For instance, hematite (hardness 6) will have a lower hardness in the...named from the colour of their streak, such as hematite — blood, crocoite — saffron and xanthocone — yellow...mineral magnetite; to a lesser extent by pyrrhotite, hematite and wolframite. A large number of minerals are | | | Book | mineral particles (eg inclusions of chlorite and hematite in jasper). Allochromatic minerals display other...unaltered crystals of the same mineral. For instance, hematite (hardness 6) will have a lower hardness in the...named from the colour of their streak, such as hematite - blood, crocoite - saffron and xanthocone - yellow...mineral magnetite; to a lesser extent by pyrrhotite, hematite and wolframite. A large number of minerals are...Caucasus - crystals up to 1.5 cm (USSR), Getchell Mine - Nevada (USA) •Application: ore (extraction of | | | Journal (issue) | Metaliferi Mts. 15 4. Baia Mare metallogenic district 64 5. Other sources of native gold from Romania...metal gold pans, as well as a replica of the famous mine carriage which is considered to be the oldest of...unit. For instance, in BradSăcărâmb metallogenic district, the Au:Ag ratio is relatively uniform (45% to...metallogenic criterion: province, subprovince, district, sector, field/ node (Fig. 2) . 7 Fig. 1. Example...relevant metallogenic units (node, field, sector, district) were made. For samples sourced abroad, a summary | | | Journal (article/letter/editorial) | extraterrestrial impacts. The glauconite-kaolinite-illite-smectite-chlorite assemblages are efficient tools...extending from Belgium, in the West, through the Ruhr District, Germany, to the Upper Silesian Coal Basin, Poland...lattice of white mica provokes the formation of illite [(K,H3O)(Al,Mg,Fe)2(Si,Al)4O10((OH)2,(H2O))] –...[(Na,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)]]. Illite is most commonly held as an alteration product...and Bain, 1986; Stixrude, and Peacor, 2002). The illite crystallinity or Kübler index (KI)) of this mica | | | Journal (article/letter/editorial) | -Petrogr. Abteilung, Burgring 7, A-1014 Wien, Austria (Received 14 August 1989; accepted in revised form...in the Upper Austroalpine Permo-Mesozoic cover. Austria. Permian samples in squares, Lower Triassic samples...Austroalpine Unit from Radenthein and Mallnock, Carinthia (FRIMMEL and FRANK, 1988) and published data of...amounts of quartz, feldspars, illite-muscovite, chlorite and hematite; considering a potential effect...anhydritebearing Reichenhall Formation in the former salt mine of Hall in Tyrol. Western Drauzug The Permo-Mesozoic | | | Journal (article/letter/editorial) | high Fe (up to 0.99 wt%; possibly contributed by hematite microor nanoinclusions) and U (up to 180 ppm)...collected from drillholes collared in the underground mine are indicated with an arrow pointing to its general...1b). The sandstones contain minor hematite, dickite-kaolinite, illite, and Sr-Ca-SO2– 4 -rich aluminum...minerals (primarily dickite with hematite) are overprinted by illite, chlorite, magnesio-foitite (alkali-deficient...mineralization of the McArthur River deposit and comprises illite, sudoite (Al-Mg chlorite), magnesio-foitite, and | | | Journal (issue) | in 1978 by Donald Elliott at the Diamond Willow mine near Thunder Bay, Ontario. Photo by Harold and Erica...Rubellite Tourmaline on Albite from the Itatiaia mine, Minas Gerais, Brazil. The Rubellite crystal measures...began with the opening of the Thun der Bay amethyst mine in 1967, and in 1975 amethyst was declared by the...best known occurrence is the Thunder Bay amethyst mine, at Elbow Lake, which has been in operation since...Diamond Willow mine, operated by Gunnard Noyes and also by the author, the Ontario Gem mine, the Dorion | | | Journal (article/letter/editorial) | S0016-7037(99)00260-4 A TEM study of samples from acid mine drainage systems: Metal-mineral association with...have been used to study bed sediments from two acid mine drainage (AMD) sites in western Montana, USA. TEM...the sample taken from the first site (Mike Horse mine), ferrihydrite is the dominant phase, Si and Zn...other site included in this study (the Carbonate mine), jarosite and quartz are the dominant phases. Interestingly... TEM reveals the presence of microcrystalline hematite with Si, S, and P sorbed to its surfaces, a nearly | | | Book | oxygen-for examp le. quartz (S10 2), rutil e (Ti0 2). hematite (Fe,0 1). Also in this category are the hydroxides...Chemical Classification Siderite, 8ri.iderbund Mine, near Eiserfeld (Siegerland, Germany), 3x almost...specimen shown here comes from the Eagle's Nest Mine in California, and its actual size is about 2 inches...be scratched with fluorite, take the next-harder mine ral from the scale, until yo u find a mi ne ral...minerals: Sulfur 1.96 Quartz 2.65 Diamond 3.52 Hematite 5.30 Scheelite 6.10 Cassiterite 7. 10 Uraninite | | | Journal (issue) | calcite; crystal aggregates 15 cm in size. Vеrklinii Mine, Dabugorsk, Pпmorskii Krai, Russia. Specimen: V...cassiterite (?), corundum, cristobalite, cuprite (x1), hematite (xl), iozite (wustite), maghemite, melanophlogite...); talc; micas: biotite, celadonite, glauconite, illite, margarite, muscovite (including its varieties...concentration of concentric-zonal oolites with a hematite—vernadite— rancieite—cryptomelane composition...amygdules and veins, quartzine, calcite, goethite, hematite, ß-tridyтite, a-cristobalite, pyrite, jarosite | | | Journal (article/letter/editorial) | in tin-tungsten deposits (such as the Panasquiera mine) and is a constituent of granite, aplite, gneiss...tourmalines in pegmatites. Muscovite itself alters to illite and kaolinite (Fleet 2003). Detrital muscovite...quartz, 6.8 cm wide, from the Santo Niño mine, Patagonia district, Santa Cruz County, Arizona. Barbara Muntyan...locality is the Palermo No. 1 mine, near North Groton, Grafton County. This mine is known for its cornucopia...a few. Also in Grafton County is the Keyes mica mine, near the town of Orange, the premier muscovite | | | Journal (article/letter/editorial) | epigenetic U-deposit of southern France, traced by K–Ar illite and K-feldspar dating Olaf Brockamp a,⁎, Norbert...Editor: U. Brand Keywords: Lodève U-district Permian sediments Illite K-feldspar K–Ar dating Wall-rock alteration...chemical analyses combined with K–Ar dating of illite and K-feldspars were carried out on bulk samples...episodes and their timing. Authigenic 2M1 and 1M illite with K–Ar ages between 270 and 245 Ma are the predominant...contain authigenic quartz, Fe-chlorite, neoformed illite, and a second-generation K-feldspar with K–Ar ages | | | Journal (article/letter/editorial) | Depositsin the EntradaSandstone, PlacervilleMining District, SouthwesternColorado GEORGE N. BREIT U.S.GeologicalSurvey...onlyclayis authigenic, vanadiferous (>1 wt % V2Oa)illite (roscoelite), whichformsribbonsandplatesthat locallyconstitute... depositsproducedthe similarcharacteristics of illite in barren and ore samples.Geochemicalconstrain...precursorclay minerals.Later, duringthe Tertiary, illite formedby reactionbetweenepigeneticsolutions at...EntradaSandstone. The unusuallylarge abundanceof illite in ore relative to barren sandstone is consistentwith | | | Journal (article/letter/editorial) | and the Victoria Gold Deposits, Mankayan Mineral District, Philippines Rene Juna R. CLAVERIA Abstract:...and the Victoria gold deposit, Mankayan Mineral District, Northern Luzon, Philippines, is discussed. The...spatial variations of sulfide distribution in the mine, as well as different periods of formation suggested...information of economic significance that can assist mine exploration. The ore minerals and paragenesis can...mineralization. 1. Introduction The Mankayan Mineral District is one of the wellknown Cu-Au districts in northern | | Zukowski, W., Cooke, D. R., Deyell, C. L., McInnes, P., Simpson, K. (2014) Genesis and Exploration Implications of Epithermal Gold Mineralization and Porphyry-Style Alteration at the Endeavour 41 Prospect, Cowal District, New South Wales, Australia. Economic Geology, 109 (4) 1079-1115 doi:10.2113/econgeo.109.4.1079 | Journal (article/letter/editorial) | Alteration at the Endeavour 41 Prospect, Cowal District, New South Wales, Australia WOJCIECH ZUKOWSKI...Barrick 3 Mineral Gold of Australia, Cowal Gold Mine, New South Wales, Australia Deposit Research Unit...chalcopyrite, Ag tellurides, arsenopyrite, apatite, hematite, illite-muscovite, and chlorite [stage 4]). Gold occurs...K-feldspar-epidote–bearing alteration halos and later-stage illite-muscovite-K-feldspar and calcite-rich alteration...highest gold grades are associated with muscovite and illite alteration. Stable isotope analyses and fluid inclusion | | Castillo-Oliver, Montgarri, Melgarejo, Joan Carles, Torró, Lisard, Villanova-de-Benavent, Cristina, Campeny, Marc, Díaz-Acha, Yael, Amores-Casals, Sandra, Xu, Jingyao, Proenza, Joaquin, Tauler, Esperança (2019) Sandstone-Hosted Uranium Deposits as a Possible Source for Critical Elements: The Eureka Mine Case, Castell-Estaó, Catalonia. Minerals, 10 (1) 34 doi:10.3390/min10010034 | Journal (article/letter/editorial) | Possible Source for Critical Elements: The Eureka Mine Case, Castell-Estaó, Catalonia Montgarri Castillo-Oliver...diagenetic components (quartz and calcite, micas, hematite and locally apatite) were replaced by a complex...Castell-estaó village (Catalonia). However, the mine was never productive and exploration was finally...[2]) have since then been described and the Eureka mine even became a type locality of new minerals (i.e...uranium deposit. Moreover, the access to all the mine tunnels and outcrops not only allowed good 3D sampling | | | Report (issue) | analyses of rock samples from the Black Butte District and Holderman Mountain area, Lane County, Oregon...Acknowledgments 1 Geologic overview 1 Black Butte district 3 Holderman Mountain area 5 Sample collection...of rock samples collected from the Black Butte District and the Holderman Mountain area, Lane County,...map showing location of study area (Black Butte district and Holderman Mountain area), Lane County, Oregon...location for samples collected within the Black Butte District 4 3. Map showing sample location for samples | | | Journal (article/letter/editorial) | supergene Au enrichment. Hydrothermal alteration, as hematite and sericite, is pervasive in the unweathered...signatures show clear zonation, defined by crystalline illite, which are associated with both stratigraphically-controlled...continuous company exploration activity in the district together with geological research directed primarily...dominant highly crystalline kaolinite with variable illite/muscovite content. Near the base 2 Geology of...interpreted as the products of weathering from an illite and sulphide primary assemblage. Below the supergene | | | Journal (article/letter/editorial) | (1450 MW), Teruel power station (1050 MW), Sabrina Mine in Utrillas (Province of Teruel), and Santa Eulalia...coal sample from the 4th coal seam of the Sabrine Mine (Utrillas, Teruel, Fig. 1). Previous works (Querol...(Cretaceous) coal deposits from the Teruel Mining District regarding mineral matter and sulphur contents...to the power station from the As Pontes Mining District. The lignites show an organic affinity for some...mineralogical quantitive analyses range from + 4.60 (hematite) to _+ 7.76 (anhydrite). The X R D patterns were | | | Journal (article/letter/editorial) | northern Laguna district are exposed in upper Morrison strata. Pipes in the southern Laguna district crop out...kaolinite and sericite, accompanied by a removal of hematite cement and the introduction of abundant, upward-migratory... mixtures to chlorite, illite (hydromica), mixed-layer montmorillonite-illite-chlorite, kaolinite mixtures...Mexico 4. Volume percentages of montmorillonite (M), illite (I), and chlorite (C) within the mixed-layer Summerville...assistance and discussions of the geology of the Laguna district. We are indebted to the Laguna Tribal Council | | | Journal (article/letter/editorial) | Purisima-Colon Vein System, Pachuca Real del Monte District, Hidalgo, Mexico* JOHN E. DREIER† 13790 Braun...Monte district is a leading example of a low total sulfide epithermal vein-type silver district. In its...percent. Hosting the more than 100 veins of the district are calc-alkalic series volcanic rocks of Oligocene-mid...Purisima-Colon vein system of the Pachuca Real del Monte district where field, petrographic, and fluid inclusion...that extends upward an additional 300 to 350 m. Illite-pyrite-calcite-chlorite alteration pervades the | | Rockwell, B. W., Cunningham, C. G., Breit, G. N., Rye, R. O. (2006) Spectroscopic Mapping of the White Horse Alunite Deposit, Marysvale Volcanic Field, Utah: Evidence of a Magmatic Component. Economic Geology, 101 (7) 1377-1395 doi:10.2113/gsecongeo.101.7.1377 | Journal (article/letter/editorial) | dominantly propylitically altered rocks containing illite, montmorillonite, and chlorite, with minor pyrite...the White Horse deposit, pyrophyllite ± ordered illite was identified using AVIRIS in localized, superimposed...levels. The fracture zones bearing pyrophyllite, illite, dickite, natroalunite, and/or APS minerals indicate...in iron-bearing rocks and soils near the Trinity mine and Big Rock Candy Mountain that are related to...zonation of minerals surrounding the White Horse mine, based on detailed analysis of imaging spectroscopy |
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