 | Müller, Axel, Ganerød, Morgan, Wiedenbeck, Michael, Svendsen Spjelkavik, Skule, Selbekk, Rune (2018) The Hydrothermal Breccia of Berglia-Glassberget, Trøndelag, Norway: Snapshot of a Triassic Earthquake. Minerals, 8 (5) 175 doi:10.3390/min8050175 | Journal (article/letter/editorial) | | Hydrothermal Breccia of Berglia-Glassberget, Trøndelag, Norway: Snapshot of a Triassic Earthquake Axel Müller...History Museum, P.O. Box 1172 Blindern, 0318 Oslo, Norway Natural History Museum of London, Cromwell Road...UK Geological Survey of Norway, P.O. Box 6315 Torgard, 7491 Trondheim, Norway; Morgan.Ganerod@ngu.no German...History, NTNU University Museum, NO-7491 Trondheim, Norway; skule.olaus@gmail.com Correspondence: a.b.mueller@nhm...Berglia-Glassberget in the Lierne municipality in central Norway forms an ellipsoid structure 250 m × 500 m in size |  | | Book | | Infrared Spectroscopy to Determine the Quality of Carbonate-Rich Diatomite Ores Reprinted from: Minerals 2018...Hydrothermal Breccia of Berglia-Glassberget, Trøndelag, Norway: Snapshot of a Triassic Earthquake Reprinted...Silica in Sinters and Quartz Veins: Implications for the Formation of Bonanza Veins in Low-Sulfidation Epithermal...Multi-Stage Evolution of Gold-Bearing Hydrothermal Quartz Veins at the Mokrsko Gold Deposit (Czech Republic) Based...guest lecturer at universities in Austria, Brazil, Norway, Italy, Poland, Spain, and Russia and was invited |  | | Book | | Infrared Spectroscopy to Determine the Quality of Carbonate-Rich Diatomite Ores Reprinted from: Minerals 2018...Hydrothermal Breccia of Berglia-Glassberget, Trøndelag, Norway: Snapshot of a Triassic Earthquake Reprinted...Silica in Sinters and Quartz Veins: Implications for the Formation of Bonanza Veins in Low-Sulfidation Epithermal...Multi-Stage Evolution of Gold-Bearing Hydrothermal Quartz Veins at the Mokrsko Gold Deposit (Czech Republic) Based...guest lecturer at universities in Austria, Brazil, Norway, Italy, Poland, Spain, and Russia and was invited |  | | Journal (article/letter/editorial) | | The deposit comprises a number of quartz-carbonate veins hosted by the syn-subductional Middle Carboniferous...Sr/86Sr0 0.7071 2 ratio were obtained for an adularia-sericite-quartz-calcite sample from Au-Ag mineralization...previously obtained 40Ar-39Ar and K-Ar data for adularia from the Au-Ag mineralization implies that gangue...Quartz-carbonatesulfide veins with Ag-Pb-Zn-Cu mineralization Quartz-carbonate veins with Au-Ag mineralization...Au-Ag mineralization occurs in the quartz-carbonate veins of the Shkol'noe deposit and Karaulkhana prospect |  | Moussa, N., Fouquet, Y., Le Gall, B., Caminiti, A. M., Rolet, J., Bohn, M., Etoubleau, J., Delacourt, C., Jalludin, M. (2012) First evidence of epithermal gold occurrences in the SE Afar Rift, Republic of Djibouti. Mineralium Deposita, 47 (5) 563-576 doi:10.1007/s00126-011-0397-9 | Journal (article/letter/editorial) | | generally occurs as gold–silver bearing chalcedony veins and is associated with felsic volcanism. Eighty...mineralized hydrothermal chalcedony, quartz ± carbonate veins and breccias were studied from ten sites representing...from early Miocene to the present. The most recent veins are controlled by fractures at the edges of grabens...characterized by carbonate chimneys, gypsum, silica cap and quartz ± carbonate veins that are depleted...metals and Au; (2) shallow banded chalcedony ± adularia veins related to boiling that contain up to 16 ppm |  | John, D. A., Hofstra, A. H., Fleck, R. J., Brummer, J. E., Saderholm, E. C. (2003) Geologic Setting and Genesis of the Mule Canyon Low-Sulfidation Epithermal Gold-Silver Deposit, North-Central Nevada. Economic Geology, 98 (2) 425-463 doi:10.2113/gsecongeo.98.2.425 | Journal (article/letter/editorial) | | silica-adularia, adularia-smectite, smectite (intermediate argillic), and smectite-carbonate (propylitic)...arsenopyrite. Field relations indicate that silica-adularia alteration is superimposed on argillic and propylitic...stockwork quartz-adularia veins, banded and crustiform opaline and chalcedonic silica-adularia veins, silica-adularia...silica-adularia cemented breccias, and sparse carbonate-pyrite and/or marcasite veins. Ore minerals consist...lithostatic pressures when some crystalline quartz ± adularia precipitated, but most ore formed at temperatures |  | | Report (issue) | | Deposits. Veins. . . . . . • . . . . . Quartz-Carbonate-Adularia Veins Quartz Veins . . . Calcite Veins. . ...Dike Rocks. . . . . . Alteration of Quartz-Carbonate Veins . 17 17 22 23 23 23 23 23 OXIDATION OF ORES...showing occurrence of berylliferous quartz-carbonate-adularia veins and sample locations. Stratigraphic units.... . . . . . Table I. Analysis of quartz-carbonate-adularia vein from Rodenhouse Wash (Lester Butcher... Computed mineral percentage in a quartz-carbonate-adularia vein (based on the analysis of table 1). |  | | Journal (article/letter/editorial) | | structurally controlled Au deposit with similarities to adularia-sericite deposits. It is the largest of four gold...also observed. Irregular pyrite veinlets and carbonate-sulfide veinlets occur in the upper unit of redeposited...Auriferous veins are parallel-sided dilatant veins with quartz-sulfidecarbonate-adularia. These veins display...A pervasive alteration assemblage of chlorite-carbonate-hematite-epidote is developed throughout the Lake...complex. This is overprinted by sericite-silica-carbonate alteration around fault zones and dykes, with |  | Moussa, N., Boiron, M.C-, Grassineau, N.V., Asael, D., Fouquet, Y., Le Gall, B., Rolet, Joël, Etoubleau, J., Delacourt, C. (2019) Mineralogy, fluid inclusions and stable isotope study of epithermal Au-Ag-Bi-Te mineralization from the SE Afar Rift (Djibouti) Ore Geology Reviews, 111. 102916 doi:10.1016/j.oregeorev.2019.05.002 | Journal (article/letter/editorial) | | inclusions and stable isotopes of hydrothermal veins from the SE part of the Afar Rift (Djibouti) were...Mineralization occurs as gold-silver in quartz/carbonate veins and is mainly associated with felsic volcanism...respectively. The presence of platy calcite and adularia are consistent with boiling conditions. Our study...metal and precious metals-bearing quartz/carbonate ±adularia veins (Moussa et al., 2012). High gold content...The study of fluid inclusion in quartz and carbonate veins further allows to infer the paleo-environment |  | | Journal (article/letter/editorial) | | .................................. 1299 1300 Veins 1300 ...........................................southern part of the Gold Hill district, Utah. The veins form a belt about 2 miles long in a stock of quartz...in the veins are quartz, adularia,and calcite; bertranditeand hematiteare accessory. Other veins in the...Mountain,Utah (9, 10), and 25 miles north of the beryl veins in the Trout Creekarea,Utah. Messrs.Simpsonand Campbellvery...sourceof much informationabout the igneousrocks and veins and was drawnuponheavilyin preparingthisnote. GENERAL |  | | Journal (article/letter/editorial) | | 1051–1077 Structural Evolution of Auriferous Veins at the Endeavour 42 Gold Deposit, Cowal Mining District...Wyalong, NSW 2671, Australia Abstract Polyphase veins at the low-grade, structurally controlled epithermal... commonly localized along faults. Gold-bearing veins cut all lithologic units at the Endeavour 42 deposit...restricted to faults, fault-hosted breccias, and veins with two distinct populations: (1) an older, steeply...implying formation during a single epithermal system. Veins are generally 1 to 10 mm thick, commonly straight |  | Sykora, Stephanie, Selley, David, Cooke, David R., Harris, Anthony C. (2018) The Structure and Significance of Anhydrite-Bearing Vein Arrays, Lienetz Orebody, Lihir Gold Deposit, Papua New Guinea. Economic Geology, 113 (1) 237-270 doi:10.5382/econgeo.2018.4550 | Journal (article/letter/editorial) | | high-grade (>3 g/t Au), refractory sulfide and adularia alteration zone that represents the ancient epithermal...low-grade (<1 g/t Au) zone rich in anhydrite ± carbonate, coupled with biotite alteration, that represents...hydrothermal veins, most of which contain anhydrite. A spectacular anhydrite ± carbonate vein array is...and reveals a dynamic structural evolution where veins were reactivated but with grossly similar geometries...to shear veins with low-angle dips (~30°) to the north. Linking these large, low-angle veins are sets |  | Tolstykh, Nadezhda, Shapovalova, Maria, Shaparenko, Elena, Bukhanova, Daria (2022) The Role of Selenium and Hydrocarbons in Au-Ag Ore Formation in the Rodnikovoe Low-Sulfidation (LS) Epithermal Deposit, Kamchatka Peninsula, Russia. Minerals, 12 (11) 1418 doi:10.3390/min12111418 | Journal (article/letter/editorial) | | conditions of their formation. Furthermore, quartz, adularia, calcite, α-cristobalite, chlorite, illite and...mainly of confined to intrusive bodies actinolite-carbonate in propylites and quartz,aadularia, of associations...quartz, adularia, sericite and prised by Au-Ag-bearing quartz-adularia and quartz-carbonate veins. The largest...subvertical Au-Ag-bearing quartz-adularia and quartz-carbonate veins. The largestinclination. gold lode...numbers correspond to the numbers of mineralized veins; the vertical scale indi-scale after [3,6,10]. The |  | | Journal (article/letter/editorial) | | of nine major subparallel quartz – “adularia” – carbonate veins with a very low sulfide content. The...majeures subparallèles à quartz – “adulaire” – carbonate contenant une très faible proportion de sulfures...low-sulfidation type and has a 40Ar/39Ar age (”adularia”) of 2.05 ± 0.05 Ma (Milési et al. 1999). Details...of nine major subparallel quartz – “adularia” – carbonate veins rich in manganese oxides and limonite...limonite, and very poor in sulfides. The veins, 740 to 2700 m long, several m thick, and more than 200 m deep |  | Frias, Sofia Marah P., Imai, Akira, Takahashi, Ryohei, Balangue‐Tarriela, Ma. Ines Rosana, Arcilla, Carlo, Blamey, Nigel (2019) Geology, Alteration, and Mineralization of the Kay Tanda Epithermal Gold Deposit, Lobo, Batangas, Philippines. Resource Geology, 69 (4) 351-384 doi:10.1111/rge.12205 | Journal (article/letter/editorial) | | collected from the alteration haloes around quartz veins demonstrated that the age of mineralization is around...local bonanza-grade Au mineralization hosted in veins and hydrothermal breccias that are intersected at...dickite/kaolinite diaspore alteration, which is cut by quartz veins. Stage 2 is composed of Au-Ag-bearing quartz stockworks...composed of carbonate veins with minor base metal sulfides. Stage 4 is composed of quartz adularia calcite...calcite veins and hydrothermal breccias, hosting the main base metal and bonanza-grade Au mineralization |  | Juliani, Caetano, Rodrigues de Assis, Rafael, Virgínia Soares Monteiro, Lena, Marcello Dias Fernandes, Carlos, Eduardo Zimmermann da Silva Martins, José, Ricardo Costa e Costa, Jhoseph (2021) Gold in Paleoproterozoic (2.1 to 1.77 Ga) Continental Magmatic Arcs at the Tapajós and Juruena Mineral Provinces (Amazonian Craton, Brazil): A New Frontier for the Exploration of Epithermal–Porphyry and Related Deposits. Minerals, 11 (7) 714 doi:10.3390/min11070714 | Journal (article/letter/editorial) | | (ii) orogenic carbonate–sulfide-rich quartz veins in shear zones, (iii) stockworks, veins, and dissemination...Low-sulfidation alteration zones typically have adularia and illite or sericite. Chalcopyrite, sphalerite...and high-grade gold placers and granite-hosted veins and disseminations have been exploited by artisanal...the occurrence of granite-hosted gold mineralized veins, more easily mined by artisanal prospectors. The...xenoliths and roof pendants and as pyrite−quartz−carbonate veins with up to 50 g/t Au and 1.5% Cu in ductile−brittle |  | Davies, A. G. S., Cooke, D. R., Gemmell, J. B., van Leeuwen, T., Cesare, P., Hartshorn, G. (2008) Hydrothermal Breccias and Veins at the Kelian Gold Mine, Kalimantan, Indonesia: Genesis of a Large Epithermal Gold Deposit. Economic Geology, 103 (4) 717-757 doi:10.2113/gsecongeo.103.4.717 | Journal (article/letter/editorial) | | v. 103, pp. 717–757 Hydrothermal Breccias and Veins at the Kelian Gold Mine, Kalimantan, Indonesia:...Abstract Mineralized hydrothermal breccias and veins formed during and after the waning stages of maar-diatremerelated...minerals as disseminations, in sheeted and conjugate veins and as breccia cement. There is a progression from...to sulfosalt-dominated hydrothermal breccias and veins (stage 4). In terms of gangue minerals, the system...illite-dominated and then carbonate-dominated. Boiling produced abundant bladed carbonate during stages 3 and |  | Catchpole, Honza, Kouzmanov, Kalin, Bendezú, Aldo, Ovtcharova, Maria, Spikings, Richard, Stein, Holly, Fontboté, Lluís (2015) Timing of porphyry (Cu-Mo) and base metal (Zn-Pb-Ag-Cu) mineralisation in a magmatic-hydrothermal system—Morococha district, Peru. Mineralium Deposita, 50 (8) 895-922 doi:10.1007/s00126-014-0564-x | Journal (article/letter/editorial) | | associated with anhydrous skarn and quartz-molybdenite veins. The hydrothermal events are recorded by a titanite...Evolution and Dynamics, University of Oslo, 0316 Oslo, Norway M. Ovtcharova e-mail: Maria.Ovtcharova@unige.ch...at Toromocho by more than 0.5 Ma. Polymetallic veins (5.78± 0.10 and 5.72±0.18 Ma; 40Ar/39Ar ages) and...formation 2.6 Ma prior to the districtwide polymetallic veins. These ages pre-date those of Toromocho porphyry...massive pyrite bodies, and Zb-Pb-Ag-Cu vein and carbonate-replacement deposits (Bartos 1989; McLaughlin |  | Warmada, I Wayan, Lehmann, Bernd, Simandjuntak, Marolop, Hemes, Herian Sudarman (2007) Fluid Inclusion, Rare-Earth Element and Stable Isotope Study of Carbonate Minerals from the Pongkor Epithermal Gold?Silver Deposit, West Java, Indonesia. Resource Geology, 57 (2) 124-135 doi:10.1111/j.1751-3928.2007.000012.x | Journal (article/letter/editorial) | | Rare-Earth Element and Stable Isotope Study of Carbonate Minerals from the Pongkor Epithermal Gold–Silver...consists of nine major subparallel quartz–adularia–carbonate veins with very low sulfide content. Vein infill...abundance of rare earth and yttrium (REY) in carbonate samples is very low (⌺REY mostly <2 ppm). However...element (REE) and carbon and oxygen isotope data of carbonate samples from the Pongkor gold–silver deposit....compilation © 2007 The Society of Resource Geology Carbonate minerals, Pongkor, Indonesia margin of the Eurasian |  | Molnár, Ferenc, O’Brien, Hugh, Lahaye, Yann, Käpyaho, Asko, Sorjonen-Ward, Peter, Hyodo, Hironobu, Sakellaris, Grigorios (2016) Signatures of Multiple Mineralization Processes in the Archean Orogenic Gold Deposit of the Pampalo Mine, Hattu Schist Belt, Eastern Finland. Economic Geology, 111 (7) 1659-1703 doi:10.2113/econgeo.111.7.1659 | Journal (article/letter/editorial) | | galena, altaite, and hydrothermal K-feldspar (adularia) grains. These minerals preserve the lead isotope...Talc-chlorite schist Tourmaline-biotite-quartz veins Altered feldspar porphyry Tonalite D E Altered...strongly deformed assemblage of talc-chlorite-carbonate schist containing irregular blocks of strongly...and the geochemical character of talc-chlorite-carbonate schist indicate an eruptive, komatiitic protolith...1- to 2-cm-thick quartz-carbonate-pyrite and tourmaline-biotite-quartz veins; the latter ones develop |  | Borisenko, A. S., Lebedev, V. I., Borovikov, A. A., Pavlova, G. G., Kalinin, Yu. A., Nevol’ko, P. A., Maacha, L., Kostin, A. V. (2014) Forming conditions and age of native silver deposits in Anti-Atlas (Morocco) Doklady Earth Sciences, 456 (2) 663-666 doi:10.1134/s1028334x1406021x | Journal (article/letter/editorial) | | 100 Released 39Ar, % Fig. 2. 40Ar/39Ar age of adularia from the quartz “Gris” veinlet. [3–8]. These...shales, where they are represented by quartz–carbonate veins and vein zones with pink dolomite, Hgsilver...quartz “Gris,” Hgsilver, arsenopyrite, and small adularia crystals in veinlet selvages). The last mineral...veinlets of sugarlike quartz and forms autonomous Ag veins (up to 0.5 m thick) and veinlets or dissemination...Hgsilver is confined to quartz veinlets with adularia and albite being spatially isolated from Co mineralization |  | Cathelineau, Michel, Boiron, Marie-Christine, Fourcade, Serge, Ruffet, Gilles, Clauer, Norbert, Belcourt, Olivier, Coulibaly, Yacouba, Banks, David A., Guillocheau, François (2012) A major Late Jurassic fluid event at the basin/basement unconformity in western France: 40Ar/39Ar and K–Ar dating, fluid chemistry, and related geodynamic context. Chemical Geology, 322. 99-120 doi:10.1016/j.chemgeo.2012.06.008 | Journal (article/letter/editorial) | | instance, authigenic mineral overgrowths such as adularia rims on K-feldspars are small sized while authigenic...basis of fluid inclusion studies in quartz, A adularia, barite and fluorite crystals (Boiron et al., 2002)...compilation in Marignac and Cuney, 1999) while similar veins hosted within the Hercynian basement made of Paleozoic...applying the 40Ar/ 39Ar method on single grains of adularia and the K–Ar method on clay size fractions. 2...Geological setting and mineral sequences of the studied veins 2.1. General context The Poitou High area is located |  | | Journal (article/letter/editorial) | | Mesoproterozoic. Low temperature quartz–carbonate–adularia veins occur in <10 cm wide fractures within...basalt in one drill hole in this region. Adularia from these veins yields 40Ar/39Ar ages that span from ca...interpreted to approximate either the timing of adularia formation during a hydrothermal event or the timing...resetting of the 40Ar/39Ar systematics within the adularia as a result of fluid flow in this sample. This is...and K-feldspar, and hydrothermal sericite and adularia (Table 1). The results have implications for our |  | | Journal (article/letter/editorial) | | suite were formed under subaerial conditions. carbonate veins and veinlets. The formation of the Kitkhoy...host rocks. As the veins become thinner, the amount of host rock fragments in veins decreases, as does...along the periphery. The quartz and quartz-carbonate veins and veinlets zone of oxidation are represented...and copper are unevenly distribber of parallel veins and masses of veinlets with uted over the area of...gold is present in the form of very minute The veins have complex forms, often branchsegregations in |  | Zhai, Wei, Sun, Xiaoming, Sun, Weidong, Su, Liwei, He, Xiaoping, Wu, Youliang (2009) Geology, geochemistry, and genesis of Axi: A Paleozoic low-sulfidation type epithermal gold deposit in Xinjiang, China. Ore Geology Reviews, 36 (4) 265-281 doi:10.1016/j.oregeorev.2009.04.003 | Journal (article/letter/editorial) | | Dahalajunshan Formation, and the orebodies occur as veins in annular faults of a paleocaldera. Mineralization...chalcedony vein, quartz vein, quartz-carbonate vein, sulfide vein and carbonate vein. There are two types of ore...chalcedony, illite, calcite, siderite, dolomite, adularia and laumontite. The main wallrock alteration is...Formation and basement rocks. The occurrence of adularia, platy calcite, and quartz or sulfide aggregates...aggregates as pseudomorphs after bladed calcite in ore veins, and occurrence of aqueous liquid, and liquid-rich |
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