 | | Book | | Vojany, Slovakia) Head of the Department of Natural History, Eastern Slovak Museum, Košice He finished...His Ph.D. study was at the Technical University, Košice (1992). Until 1990, he worked at the Dionýz Štúr...(1983). Ph.D. study at the Technical University, Košice (2000). Since 1980, he was employed in the Herman...Poland (Ewa Kos/.owska) Romania (Gheorghe Udubasa) Slovakia (Rudolf Duda) Ukraine (Orest Matkovs'ky) 31 31...(Ewa Kos/.owska). Romania (Gheorghe Udubasa), Slovakia (Rudolf Duda). Ukraine (Victor Kvasnytsya) 127 |  | Voudouris, Panagiotis, Melfos, Vasilios, Mavrogonatos, Constantinos, Tarantola, Alexandre, Gӧtze, Jens, Alfieris, Dimitrios, Maneta, Victoria, Psimis, Ioannis (2018) Amethyst Occurrences in Tertiary Volcanic Rocks of Greece: Mineralogical, Fluid Inclusion and Oxygen Isotope Constraints on Their Genesis. Minerals, 8 (8) 324 doi:10.3390/min8080324 | Journal (article/letter/editorial) | | minerals Article Amethyst Occurrences in Tertiary Volcanic Rocks of Greece: Mineralogical, Fluid Inclusion...Epithermally altered volcanic rocks in Greece host amethyst-bearing veins in association with various silicates,...pyroclastics of intermediate to acidic composition. The veins are integral parts of high to intermediate sulfidation...alternations of amethyst, chalcedony and/or carbonates is a common characteristic of the studied amethyst-bearing...amethyst-bearing veins. Hydrothermal alteration around the quartz veins includes sericitic, K-feldspar (adularia), |  | | Journal (issue) | | Albite, 11.2 cm, from the La Marina mine, Muzo District, Boyaca Department, Colombia. See the article...specimens of Schemnitz scepter and skeletal quartz, drusy amethyst, wire silver, acanthite, pyrargyrite, stephanite...Hodrusa-Hamre (in the Banska Stiavnica mining district) is also the type locality for hodrusite. V INTRODUCTION...historical events before 1920, we will use the older district name of Schemnitz in accordance with the literature...time, whereas for events after 1920 the modem district name of Banska Stiavnica will be used, bearing |  | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral — quartz — is silica (SiO,), a compound of silicon and oxygen...— some 40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphibole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...walls of the fissures. Well known minerals, such as quartz and calcite, originate at this stage and are known |  | | Journal (article/letter/editorial) | | in the historical Broumov Tøi Sekery mining district (Western Bohemia) Pb Zn Cu mineralizace v...historical Pb-Zn-Cu Broumov Tøi Sekery mining district in the northern part of the Èeský les valley,...Sulphide mineralization of NW-SE and NE-SW trending quartz veins was formed in three stages: 1) early alteration...related stage: chlorite, tourmaline and quartz; 2) main stage: quartz, galena, sphalerite, chalcopyrite and...and pyrite; and 3) late fracture related stage : quartz, chalcopyrite and minor galena, sphalerite, pyrite |  | | Book | | Enigmatic Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights...Cr-Bearing Andradite (var. Demantoid) from Dobšiná, Slovakia Reprinted from: Minerals 2019, 9, 164, doi:10...On the Color and Genesis of Prase (Green Quartz) and Amethyst from the Island of Serifos, Cyclades, Greece...degree of metamorphism, styles of mineralization (veins, pods, metasomatites, shear zone) as well as the...on another occurrence of sapphires in the same region of the South Urals occurring in anorthosites (kyshtymites) |  | | Report (issue) | | picture of a highway restaurant at Sibley. (ii) AMETHYST DEPOSITS OF ONTARIO by M.A. Vos Geological Guidebook...purpose of this guidebook is to give an account of amethyst, describing its properties, lore, uses as a gemstone...robes. Ontario has recently1 chosen amethyst, the purple variety of quartz, to be the official mineral for...This province has had a long acquaintance with quartz and its many varieties. T h e presence of these...across Ontario, from the utilitarian aspect of quartz remembered in “Grindstone Island” and “Grindstone | | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral quartz — is silica (SiO2), a compound of silicon and oxygen...— some 40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphi bole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...walls of the fissures. Well known minerals, such as quartz and calcite, originate at this stage and arc known |  | Kuz’min, M. I., Troshin, Yu. P., Boiko, S. M., Razvozzhaeva, E. A., Zorina, L. D., Martikhaeva, D. Kh. (2010) Carbonaceous matter in sulfide-quartz veins at the Kurultyken base-metal deposit, eastern Transbaikal region, Russia. Geology of Ore Deposits, 52 (3) 252-259 doi:10.1134/s1075701510030050 | Journal (article/letter/editorial) | | in Sulfide–Quartz Veins at the Kurultyken BaseMetal Deposit, Eastern Transbaikal Region, Russia M. I...carbonaceous matter filling cavities in sulfide–quartz veins at the Kurultyken hydrothermal basemetal deposit...deposit in the Khapcheranga ore district, Transbaikal region, was studied using chromatogra phy/mass...the ore mineralization of the eastern Transbaikal region (Troshin, 1976, 1978). In the last years of his...raremetal and gold deposits in the Trabsbaikal region, which he knew well. Troshin arranged fieldwork |  | | Book | | known to 1umankind since prehistoric times such as quartz 1nd gold, but also ~minerals first described quite...temperatures (it includes ore and the Alpine-type veins, cavities in volcanic rocks, minerals and rocks...1nassive. Origin and occurrence: Hydrothermal in ore veins and also of secondary cementation origin in association...Origin and occurrence: Primary hydrothennal in ore veins, also in contact meta1norphic deposits and pegmatites...secondary. It occurs with pyrite, arsenopyrite, quartz, sylvanite, calaverite, krennerite and other minerals |  | | Book | | known to humankind since prehistoric times such as quartz and gold, but also minerals first described quite...temperatures (it includes ore and the Alpine-type veins, cavities in volcanic rocks, minerals and rocks...massive. Origin and occurrence: Hydrothermal in ore veins and also of secondary cementation origin in association...Origin and occurrence: Primary hydrothcrmal in ore veins, also in contact mctamorphic deposits and pegmatites...secondary. It occurs with pyrite, arsenopyrite, quartz, sylvanite. calaverite. krennerite and other minerals |  | | Report (issue) | | CREDITS Cover: Quartz variety amethyst, 10.5 cm tall Goboboseb Mountains, Erongo Region, Namibia Scott...collection, Jeff Scovil photo Title (facing) Page Amethyst mouse with gold tail, 130 grams, 6.3 cm wide Carved...Brazilian amethyst Private collection, Robert Weldon photo © 2009 GIA Page 2 Quartz variety amethyst, 3.5...3, Table of Contents Insets Top: Circa 212 CE amethyst intaglio bearing the portrait of Roman Emperor... Marie-Lan Nguyen photo Upper middle: Quartz variety amethyst (Japan-law twin), 1.6 cm tall Andilamena |  | | | | (5) hexagonal (beryl, apatite) and rhombohedral (quartz, calcite, corundum, haematite, tourmaline, dolomite)...feature. Minerals commonly found in druses are quartz, calcite, fluorite, barytes, etc. Excellent crystals...weighing up to 500 kilogrammes. In summer 1945, a quartz crystal was found in the neighbourhood of Volhynia...mineralogy and petrography. They are most commonly of a quartz composition such as chert, opal and chalcedony...this way the pseudomorphs of quartz after calcite, or talc after quartz are formed. In nature, much rarer |  | | Report (issue) | | RESOURCES THE POWER OF OUR IDEAS COVER Left: Amethyst - Thunder Bay, Ontario. Specimen measures 4.5...Algoma Mine Silver Lake occurrence Thunder Bay Amethyst Mine Dzuba Thunder Bay occurrence Pass Lake Road...adjacent islands Black Bay Peninsula Thunder Bay amethyst area Edward and Porphyry islands Prince's Mine...Hard Rock Mine Amethyst crystals with pyrite-coated fluorite cubes Thunder Bay Amethyst Mine Native silver... 76. 77. 78. 79. 80. 81. 82. 83. 84. 85. 86. Quartz crystals, Steep Rock Mine Golden Star Mine Foley |  | Voudouris, Panagiotis, Mavrogonatos, Constantinos, Graham, Ian, Giuliani, Gaston, Tarantola, Alexandre, Melfos, Vasilios, Karampelas, Stefanos, Katerinopoulos, Athanasios, Magganas, Andreas (2019) Gemstones of Greece: Geology and Crystallizing Environments. Minerals, 9 (8) 461 doi:10.3390/min9080461 | Journal (article/letter/editorial) | | late alpine-type fissures, such as, for example, quartz, albite, adularia and titanite. The Tertiary (and...gemstones; corundum; beryl; jadeitite; garnet; quartz varieties; Greece 1. Introduction By definition...oxidation zone of the Lavrion mines [11], and the green quartz variety (prase) from the Serifos skarn [12]. Exploration...(London, UK). The oxygen isotope composition of quartz was obtained using a CO2 laser fluorination system...Ocean Water (V-SMOW). The data are calibrated to a quartz standard (Q BLC) with a known δ18 O value of +8 |  | | Journal (article/letter/editorial) | | Waihi Epithermal Gold-Silver-Base Metal Sulfide-Quartz Vein System, New Zealand: Temperature and Salinity...New Zealand Abstract The large, andesite-hosted quartz vein system at Waihi contains a major epithermal...pervasive adularia-quartz-illite-chlorite-pyrite alteration zone bounds the larger quartz veins and is associated...veinlets of quartz + calcite + pyrite ± adularia ± illite. This zone is enveloped by an illite-quartz-adula...altered andesites. The formation of the adularia, quartz, chlorite, calcite, pyrite, and some illite in |  | | Journal (issue) | | "standard" minerals. Widespread minerals, such as quartz, calcite, gypsum, and fluorite, are represented...campylite from Cumberland (England). In addition to quartz and calcite collections of mineral species which...arranged according to geographical location (country — region — locality), excluding the tematic collections...follows Italy, England, the Czech Republic, and Slovakia, each being represented by approximately 1000...fluorite druses from England, precious opal from Slovakia, agate from Germany, labrador from Canada, and | | | Book | | .......................................... 52 Slovakia ( Rudo lf Ducfa) ...............................(Ewa Koszowska). Ro mania (Gheorghe Uduba~a), Slovakia (Rudolf Ducfa). Ukraine (Victor Kvasnytsya) Native...wa especially rich in specimens from the Banal region and Gutiii Mts. (fu loppite was named in his honor)...detailed. unified mineralogical encyclopaedia of the region had been planned by the Commi!.sion on Mineralogy...Verde§ (Gold Museum. Brad) - for photography. Slovakia: Eva Sitasova (Eastern Slovak Museum. Kosice) |  | | Journal (article/letter/editorial) | | inclusions in adularia-sericite Au-Ag epithermal veins from the Karangahake, Martha, Favona, and Waitekauri...Zealand. Quartz veins contain colloform to crustiform bands that alternate with coarse-grained quartz and...and amethyst. The ore mineralization occurs only in colloform to crustiform bands. Analyses of individual...concentrations with values up to 231 ppm in Al-free quartz may reflect an accidentally captured mineral phase...ppm for inclusions in quartz and ~9,700 to 13,700 ppm for inclusions in amethyst. Antimony is the second |  | | Report (issue) | | cordierite, dioptase, dumortierite, pyrophyllite, the quartz varieties the garnet varieties, milarite, including...tourmaline and turquoise. Tourmaline, rose quartz and smoky quartz are currently the most important semi-precious...turquoise. An extensive deposit of amethyst occurs in quartz-calcite veins in rocks of the Swakop Group. Druses...Sequence yielded major amounts of gem quality amethyst and agate. Chrysocolla and dioptase are recovered...of tourmaline, 164 t of amethyst, 7 t of smoky quartz, 315.4 t of rose quartz, 190 kg of dioptase and |  | | Report (issue) | | . . . . . . . . . . . . . . . Rock exposures (amethyst, fluorite, etc.) . . . . . . . . . . . . Jackfi.... . . . . . . . . . . . . . . Rock exp osur e (quartz crystals, pyrite, jasper) . . . . . . . . . . ...idea of the diverse geological history of of the region and relates the rocks to places where they may...GERSDORFFITE, NICCOLITE, VIOLARITE, PRECIOUS METALS. In quartz-diorite dykes and norite. The ores occur along...41 I/7 W; 41 I/10 E, W; 41 I/11 E, W. Sudbury district Vermilion River Placers NATIVE GOLD. As fine dust |  | | Catalog/List | | Wales Dark brown veinlets throughtout calcite/ quartz matrix. Very rare for GB ½" £5 Ix) £15 lx2 £30...Marcel ,Piedmont, Italy Dark grey massive with quartz or red mica lxl £4 lx2£6 2x2£10 MnOSiO - ·--- ---... Morgedal, Telemark Norway Black metallic veins in quartz, collected in 1968. lxl £4 lx2 £8 ·- ·- - --...Light brown fibrous vein, bonded with hematite and quartz lxl £3 lx2 £6 273 ■■ GRANDIDIERITE Mahnbo, Madagascar...___ M_~ F~-~ 0 BO SiO 242 ■■ GUDMUNDITE Pezinok,Slovakia Silvery metallic masses in matrix lxl £6 lx2 £15 |  | | Book | | Mineralogy of Quartz and Silica Minerals Edited by Jens Götze Printed Edition of the Special Issue Published...com/journal/minerals Mineralogy of Quartz and Silica Minerals Mineralogy of Quartz and Silica Minerals Special... . . . . . . . . vii Preface to ”Mineralogy of Quartz and Silica Minerals” . . . . . . . . . . . . ....Götze Editorial for Special Issue “Mineralogy of Quartz and Silica Minerals” Reprinted from: Minerals 2018...Defect Structures of High-Purity Quartz from the Southern Ural Region, Russia Reprinted from: Minerals |  | | Book | | Mineralogy of Quartz and Silica Minerals Edited by Jens Götze Printed Edition of the Special Issue Published...com/journal/minerals Mineralogy of Quartz and Silica Minerals Mineralogy of Quartz and Silica Minerals Special... . . . . . . . . vii Preface to ”Mineralogy of Quartz and Silica Minerals” . . . . . . . . . . . . ....Götze Editorial for Special Issue “Mineralogy of Quartz and Silica Minerals” Reprinted from: Minerals 2018...Defect Structures of High-Purity Quartz from the Southern Ural Region, Russia Reprinted from: Minerals |  | | Report (issue) | | watercolor by Valter Fogato Title Page Photos Quartz crystal with hematite from Mangatobangy, IO cm...Pezzotta (Italy), GUnther Neumeier (Germany). Amethyst specimen from Ambilobe (see page 80 ff). Photo...The Pan-African event, gemstones, ores and alpine veins; Karoo sediments; Sapphire from ancient volcanoes;...the Antsongombato Gem Mine Alpine Veins Page 74 The Vohemar region; The titanite pocket of February 1998;...future of alpine veins in Madagascar Amethyst and Other Quartz Page 80 Amethyst, smoky quartz and citrine |
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Quartz veins, Kuzmice, Trebišov District, Košice Region, Slovakia