 | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...as a protection against drunkenness - the name amethyst in fact means 'not drunken'. Clear transparent...fibrous sphalerite from Diepenlinchen, near Aachen, Germany. PLATE Vo I~ .·• / ~1 rhyolite 37 r . ...chalcopyrite from Herdorf, Siegerland, Germany. Center. Pyrrhotite. Harzburg, Germany. Below Massive chakopyrite...porphyry feldspars (Na, Ca) diorite hornblende andesite *porphyry dioriteporphyry dioriteaplite feldspar |  | Hartmann, Léo Afraneo, da Cunha Duarte, Lauren, Massonne, Hans-Joachim, Michelin, Cassiana, Rosenstengel, Leonardo Manara, Bergmann, Magda, Theye, Thomas, Pertille, Juliana, Arena, Karine Rosa, Duarte, Sandro Kucera, Pinto, Viter Magalhães, Barboza, Eduardo Guimarães, Rosa, Maria Luiza C.C., Wildner, Wilson (2012) Sequential opening and filling of cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic province, Brazil and Uruguay. International Geology Review, 54 (1) 1-14 doi:10.1080/00206814.2010.496253 | Journal (article/letter/editorial) | | cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic...Mineralogie, Universität Stuttgart, Stuttgart, Germany d Geological Survey of Brazil (CPRM), Rua Banco...cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic...cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic...Mineralogie, Universität Stuttgart, Stuttgart, Germany; d Geological Survey of Brazil (CPRM), Rua Banco |  | Baggio, Sérgio Benjamin, Hartmann, Léo Afraneo, Lazarov, Marina, Massonne, Hans-Joachim, Opitz, Joachim, Theye, Thomas, Viefhaus, Tillmann (2018) Origin of native copper in the Paraná volcanic province, Brazil, integrating Cu stable isotopes in a multi-analytical approach. Mineralium Deposita, 53 (3) 417-434 doi:10.1007/s00126-017-0748-2 | Journal (article/letter/editorial) | | / Accepted: 31 May 2017 # Springer-Verlag GmbH Germany 2017 Abstract Different hypotheses exist on the...Universität Hannover, Hannover, Germany 3 Universität Stuttgart, Stuttgart, Germany Keywords Paraná volcanic...Cretaceous. However, basaltic andesite, dacite, rhyodacite, and andesite also occur. Rhyolitic flows are...quarries: (1) quarry 86, in the town of Dom Pedro de Alcântara; (2) Brasília-Guaíba quarry, in the town...town of Bom Princípio; and (3) David Basso quarry, in the town of Taquaruçu do Sul (Fig. 2a). In the Santo |  | Duarte, Lauren C., Hartmann, Leo A., Ronchi, Luiz H., Berner, Zsolt, Theye, Thomas, Massonne, Hans J. (2011) Stable isotope and mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic province. Mineralium Deposita, 46 (3) 239-255 doi:10.1007/s00126-010-0323-6 | Journal (article/letter/editorial) | | mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district...S) and mineralogical studies of the world-class amethyst-geode deposits of the Los Catalanes gemological...silica minerals in geodes (chalcedony, quartz, and amethyst) are much larger and the values generally somewhat... Introduction The largest world producers of amethyst and agate geodes (600 tons/month) are Brazil (Ametista...Institute of Technology, Adenauerring 20b, Karlsruhe, Germany e-mail: zsolt-attila.berner@kit.edu T. Theye : |  | | Book | | by Gloucester Typesetting Co. Ltd. Printed in Germany Contents Translator's Foreword 4 Foreword ...known in some parts of the Continent, including Germany. Ore: Ores are deposits of minerals, which contain...penetration twin of gypsum. Minerals 15 Geode of amethyst from Brazil, with well developed crystals Large...prisms and pyramids. Occurrence: England, Scotland, Germany, Alps, Urals, Brazil, Madagascar. Quartz is important...twinning (No. 7). Occurs in England, Scotland, Germany, Alps, Norway, Sweden. Microcline has the same |  | | Book (edition) | | Ni ee Smoky Quartz 132 ype haha eens 90 — Amethyst 134 aluation of Diamon Pamoue Diamonds 04 Brilliant...Beryl 112 ~ 114 Chrysoberyl 116 Spinel 118 Topaz Amethyst ay yst Q 140 Hawk’s-Eye 140 Tiger’s-Eye 140...gratitude to Prof. Dr. Hermann Bank, Idar-Oberstein/ Germany, for making many rare collector gemstones available...thank Mr. Hans Walter Lorenz, Idar- Oberstein/Germany, who cut numerous rare gemstones specifically for...first known, used for making jewelry, include amethyst, rock crystal, amber, garnet, jade, jasper, coral |  | | Book | | Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia * 5 x 6 x...cavities are some of the world’s finest crystals of amethyst, agate and a large family of silicate minerals...manganese oxide on limestone, Solnhofen, Bavaria, Germany * 11.5 x 24 x 0.5 om MINERALS: PRODUCTS OF A... Europe: Cornwall, England; Rheinland-Pfalz, Germany. Asia: Yekaterinburg (Sverdlovsk), Ural Mountains...rocks. Arsenic, Sankt Andreasberg, Lower Saxony, Germany * 5 x 7 x 1 cm Wyoming; salt deposits in Louisiana |  | Götze, J., Tichomirowa, M., Fuchs, H., Pilot, J., Sharp, Z.D. (2001) Geochemistry of agates: a trace element and stable isotope study. Chemical Geology, 175 (3) 523-541 doi:10.1016/s0009-2541(00)00356-9 | Journal (article/letter/editorial) | | Freiberg, Brennhausgasse 14, D-09596 Freiberg, Germany Department of Earth and Planetary Sciences, UniÕersity...UniÕersity of New Mexico, Albuquerque, NM 87131, Germany Received 8 January 2000; accepted 5 July 2000 ...) 1200 1160 Idar–Oberstein, Germany (Permocarboniferous)b 3-1 andesite 41.5 76 30 3-3 agate, white 0...- 0.05 - 0.05 0.39 - 0.01 - 0.01 Lauterbach, Germany (Permocarboniferous)c 6-1 rhyolite, altered 34...6-8 agate, dark 0.60 2 6-10 quartz 0.60 8 6-11 amethyst 0.70 8 32 37 3 3 3 3 3 6.71 6.52 0.21 0.49 0 |  | | Book | | near the surface: gabbro to basalt, diorite to andesite, granodiorite to dacite, granite to rhyolite....precious tourmaline, mountain crystal, a part of amethyst (variants of quartz), amasomte (variant of microc...variants of quartz can be found: mountain crystal and amethyst, agate, which fills the cavities in bands, and...Biikk 3^, was pierced by the younger, eocene andesite. In pegmatitic accumulations, mainly the principal...important ones are perhaps the so-called old. community quarry on the eastern limits of Szekesfehervar, the surroundings |  | | Book (edition) | | Corundum 3 6 Ruby 82 8 Sapphire 86 Amethyst Amethyst Quartz Beryl 90 Citrine 120 Emerald 90...first known, used for making jewelry, include amethyst, rock crystal, amber, garnet, jade, jasper, coral...for a river in Sicily), or mysterious powers ("amethyst" was thought to protect against drunkenness)....Precious Stones, Gemstones, Pearls and Corals (for Germany) to protect against unfair competition. Internationally...jasper California ruby Citrine or yellowish fired amethyst Aventurine Hessonite Candy Almandine Indian |  | | Journal (issue) | | continue to produce for some years. Since 1970 the amethyst deposits in the remote Las Vigas area have produced...prisms, reminiscent of specimens from Freiberg, Germany. These crystals are usually small (under 1 cm)...quality only by the very best from St. Andreasberg, Germany and Huancavelica Department in Peru. The polybasites...Lieber Baden-Badener-Strasse 3 D-69126 Heidelberg Germany Gerhard Frenzel Min.-Pet. Inst. der Universität...Universität Beuenheimer Feld 236 Heidelberg, Germany The beautiful amethyst crystals and crystal clusters from |  | | Journal (issue) | | Hubbard is thanked for a boracite specimen from Germany which was useful for comparative purposes. Dr....spectra recorded on a number of specimens from Germany are also considerably different from accepted values...(1987) and in slags from the Harz Mountains in Germany by Schnorrer-Kohler (1987). It has been recently...MINERALS FROM THE MASSIF CENTRAL HAMPSTEAD FARM QUARRY, AVON {Russell Society Southern Branch) PRESENTATIONS:...& Minerals No. 14 _,,,_ AGATES FROM ARDOWNIE QUARRY Monifieth, Tayside, Scotland Simon M. Ingram |  | | Book (edition) | | 86 Diamond Rock Crystal 132 Smoky Quartz 132 Amethyst 134 _ & Diamond Occurrences eiedvsk Ouaetz ...first known, used for making jewelry, include amethyst, rock crystal, amber, garnet, jade, jasper, coral...for a river in Sicily), or mysterious powers (“amethyst” was thought to protect against drunkenness)....Precious Stones, Gemstones, Pearls and Corals (for Germany) to protect against unfair competition. Permitted...Korean jade Yellow sapphire Serpentine Lithia amethyst Lithia emerald Madeira topaz Marmarosch diamond |  | | Report (issue) | | of America PHOTO CREDITS Cover: Quartz variety amethyst, 10.5 cm tall Goboboseb Mountains, Erongo Region...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, Toamasina |  | | Journal (article/letter/editorial) | | deposits: diaspore, fire opal, blue chalcedony, amethyst, smoky quartz, and agate. Close scrutiny of a...past decade or so. Current commercial sources of amethyst include Uruguay, Brazil, Zambia, Mozambique, Mexico...Several mining companies, especially those based in Germany, recognized the gemological importance of the fire-opal...blue chalcedony in Eskisehir Province. (TL[O`Z[ Amethyst is a common gemstone worldwide; however, most...mine for gem amethyst in the Balikesir-Dursunbey-Gugu region (fig. 2). The Alacam Amethyst Mining Company |  | | Book | | 49 Introduction 49 Alpine occurrences 50 West Germany 55 Elba 56 England 56 Scotland 59 France 62 6...Pleochroism Occurrence Rock crystal (colourless), amethyst (violet-purple), citrine (yellow to brown), rose...opaque). Single crystal specimens of rock crystal, amethyst, citrine and (rarely) rose quartz occur in prismatic...varieties mainly massive in form. Fairly pronounced in amethyst (blue, reddish-violet). In almost all rock types...of coloured quartz and the granular varieties); amethyst and euhedral rock crystals were classed as crystals |  | Volkov, A. V., Prokof’ev, V. Yu., Savva, N. E., Sidorov, A. A., Bayankin, M. A., Uyutnov, K. V., Kolova, E. E. (2012) Ore formation at the Kupol epithermal gold-silver deposit in northeastern Russia deduced from fluid inclusion study. Geology of Ore Deposits, 54 (4) 295-303 doi:10.1134/s107570151204006x | Journal (article/letter/editorial) | | salinity of aqueous solutions filling inclusions in amethyst and quartz from ore veins at the Kupol and Dvoinoi...until recently. Fluid inclusions from quartz and amethyst samples taken from the main orebody of the Kupol...silica give way to the rhyolite–dacite–basaltic andesite series characterized by the opposite evolutional...and Filonov (2004). Panel (a): (1) andesite and basaltic andesite (lavas and tuffs) of the mid dle sequence;...rhyolite of the upper sequence, (4) andesite and basaltic andesite intercalating with agglomerate lapilli |  | | Journal (issue) | | Zodac, jade expert Louis Zara, Doris Biggs, Francon quarry specialist Don Doell, mineral dealer Hugh Ford...of Schemnitz scepter and skeletal quartz, drusy amethyst, wire silver, acanthite, pyrargyrite, stephanite...mining area include skeletal and scepter quartz, amethyst, tabular barite, pink-purple diaspore crystals...the 14th century and from which gray and purple andesite was taken. COLLECTING IDSTORY Schemnitz Mining...and crystal groups, from mines in and outside of Germany. I admire the rare specimens and crystal groups |  | | Journal (issue) | | Burnt Cabin Creek, Three-mile School, and Ritter Quarry. But even though I have been to all those areas...disappeared for one reason or another. Fig. 1. Amethyst crystals in stilbite Shellrock Mountain, Hood...stilbite, and many have a lovely pale violet color – amethyst. See more about what causes that color in quartz...color to the quartz, making it what we call amethyst. Amethyst heated in air loses its purple color, and...Ojuela Mine, Mapimi, Mexico 9 Fig. 4 Quartz var. Amethyst Shellrock Mtn., Oregon Quartz var. Citrine Brazil |  | | Journal (article/letter/editorial) | | wt.% SiO2 ) cuts the Incopel flow in the Sultepa quarry and has 54 counts per second. This evidence indicates...rocks from the Sultepa quarry, five samples of volcanic rocks from the AGCM quarry, and four samples of...of sandstones from the AGCM quarry were analysed (n = 13 samples) for major and trace elements (Tables...(Figure 3) and two additional flows at the AGCM quarry. A basalt dike cuts the first flow (Figure 3) in...Incopel quarry and displays elongated pipe vesicles in the lower crust. In the adjacent Sultepa quarry, this |  | | Journal (article/letter/editorial) | | e ............................................ Amethyst ................................................Czecho-Slovakia ........ 975,o0o France ................. Germany ............... 79o,ooo Great Britain ...........520,000 46,000 35,000 •,ooo II,O00 9,5o0 8,800 Amethyst• ............. 7,000. Moonstone4 .............from basic flow rocksin Agate 6 ................ Amethyst 6 ............. Opal .................. Thompsonite...Total, •3,8oc Veins deposited by magmatic waters-Amethyst e ............. 25,0oo Rock crystal • ....... |  | | Book | | MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...1991). Simdeled, Aust-Agder. Early in 1999, in a quarry near S~ndeled, collectors opened a pocket containing...PORTUGAL Montijos quarry, Monte Redondo, Leiria Estremadura. The Montijos gabbro quarry at Monte Redondo...EUROPE AUSTRALIA GREECE Portland Harbor Trust quarry, Cape Grant, Victoria. In the late 1970s and early |  | | Journal (article/letter/editorial) | | Lower Hutt, New Zealand Abstract The large, andesite-hosted quartz vein system at Waihi contains a...during deposition of the main-stage quartz. Minor amethyst as the final stage of vein filling was locally...was not associated with sulfides and electrum. Amethyst was deposited at 253° to 170°C from fluids containing...Oxygen isotope δ18O values for vein quartz and amethyst range from 6.1 to 11.6 per mil and for vein calcite...associated with subaerial Miocene to early Quaternary andesite-dacite-rhyolite volcanic rocks of the Coromandel |  | | Book | | gas cavities (vesicles) in the volcanic rocks andesite and basalt (fig 5), or more rarely may be found...volcanic rock 6 Polished halves of a cut agate amethyst, smoky quartz, carnelian and jasper. Other miner-...than these. 8 Agate composed of (central) purple amethyst enclosing cream-coloured calcite, surrounded by...brackets) of One-Inch series: for example, Barras quarry NO 822790, 45, (43). National grid reference numbers...Mineralogy of Scotland (1901)) Kincardine Barras quarry, NO 822790, 45 (43) Allardice, NO 82 74, 45 (43) |  | | Journal (article/letter/editorial) | | types can be found in the same agate. Basalt and andesite are the most widespread agate host rocks but agates...contributions by research workers from Russia and Germany, who only published in Russian and German. 2. Scientific...experimentation and comment to his earlier observations. Germany hosts some of the world’s finest agates and the...pigmentation is not clear with (a) well-formed amethyst crystal centres and (b) brown pigments found in...Technische Universität Bergakademie, Freiberg, Germany shows that rock thin sections were being studied |
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