 | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...minerals are concerned. Opal is still thought to bring bad luck, and similar stories are told about certain...fibrous sphalerite from Diepenlinchen, near Aachen, Germany. PLATE Vo I~ .·• / ~1 rhyolite 37 r . ...+J gran,tic ' •,.:,,,.'·· . v,.~ . ,.v •, •- basalt magma b+., \I I dioritic magma magma +¥ ...chalcopyrite from Herdorf, Siegerland, Germany. Center. Pyrrhotite. Harzburg, Germany. Below Massive chakopyrite |  | | Journal (issue) | | Vancouver Way Columbia River 2 ARSENIC IN AGATE by Don Howard and Rudy Tschernich Unusual red, yellow... and black inclusions described as sagenite in agate were first found in the late 1940’s by Ceil Stickney...Creek. Much speculation has been made about the agate locality, with erroneous information published....during the collecting period at this site. The agate veins were vertical and averaged from a few inches...best quality for cutting since they were solid agate. The larger veins usually contained rotten or broken |  | | Book | | Martin Meschede Laurence N. Warr The Geology of Germany A Process-Oriented Approach Regional Geology...Reviews Series editors Roland Oberhänsli, Potsdam, Germany Maarten J. de Wit, Nelson Mandela University, Port... Martin Meschede • Laurence N. Warr The Geology of Germany A Process-Oriented Approach 123 Martin Meschede...and Geology University of Greifswald Greifswald, Germany Laurence N. Warr Institute of Geography and Geology...Geology University of Greifswald Greifswald, Germany ISSN 2364-6438 ISSN 2364-6446 (electronic) Regional |  | | Book | | collectors and often used as decorative items. Basalt is the most abundant volcanic rock on Earth’s surface...rock, created when hot gases were trapped in the basalt lava as it a specimen. The minerals may have grown...banded growths in thodochrosite (page 112) and agate (page 167), document these changes. Such features...some of the world’s finest crystals of amethyst, agate and a large family of silicate minerals known collectively...solidify into an extrusive igneous rock such as basalt. Magma may also solidify very slowly beneath Earth’s |  | | Catalog/List | | I) AGATE. Idar-Obersteio, Rhineland, Germany. Both halves of a cut nodule sllowing a banded agate about...AMETHYST. Karur, Tamil Nadu, South India. A dark green basalt matrix, the top of wh.ich is flat and shows a 60x30mm...EPISTil.BITE. EkJera Quarry, Nasik, Marharashtra, India. A shallow c.�\�ty in basalt matrix lined with small...max £40. 33) PECTOLITE and PREBNITE. Porthoustock Quarry, St Keveme, Cornwall. Matrix with a band of yellowish...matrix. 70x45x25mm. £65. 49) WAVELLITE. Laharran Quarry, Minane Bridge, Co Cork, Ireland. A 10-15mm crust |  | | Journal (issue) | | province, and many of the basalt flows which form the mountains and mesas are agate-bearing. It has been 30...nice biscuits – amygdules of agate in place or newly released from the basalt, many containing sagenite...stainless steel. I received a gift of 50 pounds of agate from Alpine, Texas. It was not very good material...by Cornish superstition that a woman in a mine is bad luck. But what did Mary care of superstition? After...items were auctioned: pyrite specimens, a large agate slab, a 132-gram parcel of opals, and a bagged variety |  | | Book | | Front cover top Agate from Germany: bottom Agate from Scotland. Back cover Agate from Germany. Title page...page Agate from Russian Arctic coast. Distribution NBN International Estover Road Devon PL6 ?PY UK Contents...Introduction 4 Names of agates 6 What is an agate? 10 Properties of agates 44 Sources of agates...geological environments. Si nce the mid-1900s, agate collecting has become very popular in Europe, North...America and the M iddle East. There are thousands of agate-producing areas on Earth, and in the following pages |  | | | | Front cover top Agate from Germany; bottom Agate from Scotland. Back cover Agate from Germany. Title page...page Agate from Russian Arctic coast. Distribution NBN International Estover Road Devon PL6 7PY UK Contents... Contents Introduction Names of agates What is an agate? Properties of agates Sources of agates Europe...different geological environments. Since the mid-1900s, agate collecting has become very popular in Europe, North...America and the Middle East. There are thousands of agate-producing areas on Earth, and in the following pages |  | | Journal (article/letter/editorial) | | 2. Map of southwest Poland at its border with Germany and the Czech Republic. Lwówek Śląski and Lubań...United States, Canada, United Kingdom, Poland, Germany, Spain, and Hong Kong. Leslie Gordon photo. emony...mineral museums (including those in Freiberg, Germany) and sightseeing in the cities of Wrocław and Kraków...three world-class mineral museums in Freiberg, Germany, by their curator, Andreas Massanek: the Terra...(right). Wire silver on calcite from Freiberg, Germany; TU Bergakademie Museum specimen, John Rakovan |  | | Book (volume) | | (Specord 75 IR or Specord M80, Carl Zeiss, Jena, Germany), Perkin Elmer 1600 Series FT IR spectrometer or...FT IR spectrometer (Bruker Optics, Ettlingen, Germany). IR spectrum of a pure KBr disc was subtracted...Mg3B7O13Cl Locality: Wandsleben, Saxony-Anhalt, Germany. Description: White to beige fine-grained aggregate...Lüneburger Kalkberg, Lüneburg, Lower Saxony, Germany (type locality). Description: White fibrous aggregate...Locality: Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany. Description: White |  | Abratis, Michael, Mädler, Jonas, Hautmann, Siegfried, Leyk, Hans-Jörg, Meyer, Romain, Lippolt, Hans Joachim, Viereck-Götte, Lothar (2007) Two distinct Miocene age ranges of basaltic rocks from the Rhön and Heldburg areas (Germany) based on 40Ar/39Ar step heating data. Geochemistry, 67 (2) 133-150 doi:10.1016/j.chemer.2006.03.003 | Journal (article/letter/editorial) | | basaltic rocks from the Rhön and Heldburg areas (Germany) based on 40Ar/39Ar step heating data Michael Abratis1...Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena, Germany Thüringer Landesamt für Umwelt und Geologie,... Carl-August-Allee 8-10, 99423 Weimar, Germany 3 Laboratorium für Geochronologie, Ruprecht-Karls-Universität...Heidelberg, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany 4 Geo-Instituut, Afd. Geologie, Katholieke Universiteit...Present address: Leipziger Straße 78, 07743 Jena, Germany. 0009-2819/$ - see front matter r 2006 Elsevier |  | | 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...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...Crystals almost spherical (cubic system). Occurs in Germany, Italy, Brazil. (Specimen from Italy). 5 Adularia |  | | Report (issue) | | princess from a small duchy in what is now northern Germany. The powers that be across the sea in England were...settled on this rather tall, gangly teenager from Germany. Apparently court counselors of that era did not...Gilg Technische Universitiit Munchen, Munich, Germany W hen it comes to amethyst formation, it would...prismatic, banded Maissau, Austria Schlottwitz, Germany Thunder Bay, Ontario, Canada Geodes in basaltic...Oudi, Morocco Origins 11 PARANJ\-ETENDEKA FLOOD BASALT Above: Quartz variety amethyst, 12.6 cm wide Rio |  | | Book | | rock again. ries. This may be massive granite and basalt or orderly sedi- Although we think of rocks as...oldest materialize on the polished surface of an agate or inside the tiny tokens of human culture, including...and smaller. The five and six-sided pillars of basalt and trachyte. as seen in quarries or in the field...in the text, 59), GEODINO (PAGE 76), BOTSWANA AGATE (PAGE 90), either by referring to something familiar...viewpoint in Death Valley, California, is called 'bad- Vesteralen, an island group off the coast of northern |  | 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...Albuquerque, NM 87131, Germany Received 8 January 2000; accepted 5 July 2000 Abstract Agate samples of acidic...analysis to provide information about the process of agate formation and the origin of mineral-forming fluids...of different localities but also within single agate samples Žup to 10‰ for d18 O.. In general, oxygen...quartz incrustations. Variations within single agate samples can be explained either by kinetic effects |  | | Book (edition) | | Production of Gemstones oS 70 Cutting and Polishing Agate 71 Cutting and Polishing Colored Stones _ Cabochon...Rhodochrosite Dendritic Agate 146 184 Rhodonite Pyrope 120 Kimandite 120 Moss Agate 146 Agate 148 : 186 Turquoise...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...for its green color), their place of discovery (“agate” for a river in Sicily), or mysterious powers (“amethyst” |  | | Journal (article/letter/editorial) | | were spinel, natural and artificial corundum, and agate. Points from two German Zeppelins were also examined...retained as the material for the cup, and that agate, which is slightly less hard but extremely tough...microscopical method for identifying agate of the appropriate quality. The agate-sapphire arrangement was subsequently...the Netherlands, a neutral country, was allowing Germany to transport large quantities of stone, gravel...Bray (1917) showing the improved arrangement of agate point and sapphire cup for aircraft compasses, as |  | | Journal (article/letter/editorial) | | near the old HaleWalker Quarry —perhaps a third of a mile from the Strickland Quarry. Chalcopyrite is disseminated...green coating on pegmatite, at the Hale-Walker Quarry itself, was seen a few years ago. It was probably...the entire inside of which is lined with polished agate slabs of most exquisite patterns and colors. It..."Considerable hyalite has come from the Morrow (Leiper's) Quarry, on Route 320 between Swarthmore and ROCKS AND...xls. "On the southeast rim are found agate, jasper, jasp-agate, barite and limonite. "If anyone wants |  | | Journal (article/letter/editorial) | | Eur. J. Mineral. 2002, 14, 1109–1118 Agate: a study of ageing TERRY MOXON 55 Common Lane, Auckley, Doncaster...measured using X-ray powder diffraction. A plot of agate crystallite size vs log age of host rock shows a...increase in density. A high correlation between agate crystallite size and age of host rock shows that...determination of crystallite size in wall-lining agate allows either an estimation of the approximate age...rock or an identification of a known agate region. Key-words: agate, dating, silica, X-ray, genesis, density |  | | Journal (issue) | | 2014 Cover Image: “Saturn’s Rings” Inclusions in Agate Photo and Collection of Tom Shearer 3 Agates and...included a long hard walk to the Amboarohy corundum quarry. Amboarohy is the famous locality for sapphire...Morondava and keep going a long days on lots of bad roads and two ferrys. We stopped at Avenue de Baobab...Göetze, Mineralogist TU Bergakademie Freiberg, Germany Introduction Agates are some of the most fascinating...ancient times, the question concerning the genesis of agate is still in discussion today. Both in historic and |  | | Journal (article/letter/editorial) | | of bertrandite specimens found at the Strickland Quarry, at Portland, Conn., last year. Walter Bagley spotted...unreported. On October 15th last I visited the Toll Gate Quarry, just iy2 miles south of Middletown, on Rout 9"Dave... Lakeland, Fla. "These are found in a dolomite quarry. They are generally black at this locality. In...Smith College also believe this to be true. "Too bad that the fabulous mineral collecting at the Lane...agates and thomsonites. "Agates are collected at Agate Bay near Two Harbors and elsewhere along the north |  | | Journal (article/letter/editorial) | | minerals Review Agate Genesis: A Continuing Enigma Terry Moxon 1 and Galina Palyanova 2,3, * 1 2 3 ...discussions based on observations on host rock and agate thick sections. Over the next 25 years, experimental...identifying the physical and chemical properties of agate. The outcome of this work has allowed limited evidence-based...evidence-based comment on the conditions of agate formation. There is a general consensus that agates...Keywords: agate; chalcedony; XRD; genesis; moganite; crystallite growth; age 1. Introduction Agate and chalcedony |  | | Journal (issue) | | 2" up to 6"x 6" S0c to $10.00 • - -- • Agate in Idaho. Agate halves up nodules having blue, gray & white...$1.00, $2.00 and $3.00. • - - -• Red and white agate masses from Nevada 2"x 2" and 3"x 3" SOc and 75c...- - -• Vari-colored banded agates from Braen's quarry, Hawthorne, N. J. 2"x 2" to 4"x 4" 50c to $3.00...Montana 1 ½"x 1½" SOc up to $3.00 «- - -• Many agate cabochons - all colors SOc to $2.00 «---• Moss...FROM THE QUARRY .. . . . ......... .... .. .. ............ • .......... FREAK SIMULATIONS IN AGATE. by Ernest |  | | Journal (issue) | | Joliet Jr. College Godehard Lenzen, Hamburg, Germany (Geologic Education) THE EARTH SCIENCE D -ST is...BLISTER HYPOTHESIS AND GEOLOGICAL PROBLEMS GS We Wolfe Bad Quakes Frequent in the Andes Iodine from Oil Wells...lone, and still puzzling Heidelberg jaw, found in Germany many years ago. Like Heidelberg Man, Telanthropus...used for charging drill holes in the underground quarry at the Oil-Shale Demonstration Plant near Rifle...different types of igneous rocks, particularly gabbro basalt and granorhyolite types. Corollary: the association |  | | Journal (article/letter/editorial) | | cracks, and should take an excellent polish. KANSAS: Agate pebbles, banded, dark gray and bluish, have been...MICHIGAN: Nice pebbles of amethyst are found at Agate Harbor, Keweenaw Co., Mich. MINNESOTA: Dark brown...wood used to be found in the ROCKS AND MINERALS Bad Lands of Nebraska. Can any reader furnish some information...and beryllonite xls have been found at the Smith quarry, Newport, N . H., recently (by yours truly)." N...truck driver friend I visited an old quarry at Holland, Ohio. This quarry, while very large showed few pockets |
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