 | | Journal (article/letter/editorial) | | Geology S ilver was one of the first metals to silver has the highest-known reflectivity of visible light...used by humans, with records Silver crystallizes in the isometof silver mines dating back at least six ric...the When pure, the mineral is simply elemental silver (Ag). However, it Andean mineral theme of the 2003...excepof Au and Hg and, less commonly, tional Peruvian silver has been selected as this issue’s Connoisseur’s...Choice. Figure 1. An unusually aesthetic 8.3-cm silver As, Sb, Bi, Pt, and Cu in solid soluAdditional |  | | Book | | merely heightened this impression. The centuries-old lure of gold has given rise to a great many legends,...certain metallic seams, in particular, tin, gold, copper, etc. —Deformations of the Earth’s crust take the...compounds: oxides, carbonates, sulphates, etc., of copper, lead, uranium, etc. Unlike the organic compounds...(pyrite), and sometimes pyramidal cubes (native copper). —Tetragonal: a straight prism, with a square...Sulphur Pyrite Marcasite Gold Native Gold Silver Native Silver Proustite Arsenic Orpiment - Realgar . |  | | Journal (issue) | | mine (NY 3515 3418), which was worked for lead and copper ores (Adams, 1988). The vein referred to here as...built specifically to process the ores from local mines. Figure 2. Hugh Lee Pattinson (1796– 1858) patented...mineralized with galena, cerussite and possibly copper minerals. The North vein is of Lower Devonian age...southerly direction along a copper-bearing vein that is here called the “Copper vein” (Adams, 1988). In addition... Figure 3. Map showing the locations of the various mines and major vein structures in the Caldbeck Fells |  | | Journal (article/letter/editorial) | | of gasoline, there are mineral events aplenty to lure us onto the open road with our vacation days. For...with the Copper Country Mineral Retreat, 3–10 August, in the historic Lake Superior native copper district...thirteenth annual Copper Country Gem and Mineral Show (in Houghton) sponsored by the Copper County Rock and...Cliff, Phoenix, Central, Copper Falls (Petherick), Mesnard, and Arcadia mines. (Who says there aren’t...html. This issue has three articles tied to the Copper Country: one on datolite found this past winter |  | | Journal (article/letter/editorial) | | on the structure, chemistry, and texture of wire silver for a master’s of science degree at Miami University...ander210@miamioh.edu rakovajf@miamioh.edu & Wire Silver Kongsberg, Norway Wire Gold Ground Hog Mine, Gilman...Gilman, Colorado S ince the dawn of civilization, silver and gold have been treasured for their surpassing...coins are Figure 1. Section cut through a wire silver from Kazakhstan shows roughly equigranular texture...alloy of silver and gold (Wallace 1987). Throughout history and around the globe, gold and silver have been |  | | Book | | Proustite Azurite 50 Galena Quartz 58 102 106 Copper 54 90 94 Pyrite Malachite 110 114 Cuprite...they will probably elude him. Setting aside the lure of one species or many, there are collectors to...specimen-producing veins of the Portuguese tungsten mines, requires some chemical explanation. Uvarovite,...collectors has also brought about exploitation of mines and other properties that would not be worked commercially...counterparts are appearing fresh from the active mines of the world. The one unifying feature for all of |  | | Book | | Congress catalog card number: 77-186742 Printed in France by Draeger, Paris CONTENTS Introduction The Birth...Orleans, FRANCE; Curator, School of Mines, Paris 4 F. HOFMANN, Professor, School of Mines, Freiberg...SCHUBNEL, Professor and author, School of Mines, Paris, FRANCE ¥& JOHN SINKANKAS, author and collector...Kongsberg, NORWAY }& PAUL FRAENKEL, collector, Paris, FRANCE jx JOHN FULLER, Mineral Assistant, British Museum...omitted, how is it possible to select two golds, two silvers, two rhodochrosites, and two siderites? When the | | | Book | | Orleans, FRANCE; Curator, School of Mines, Paris ^ F* HOFMANN, Professor, School of Mines, Freiberg...schubnel, Pro fessor and author, School of Mines, Paris, FRANCE ^ JOHN sinkankas, author and collector,...Kongsberg, NORWAY ^ PAUL fraenkel, collector, Paris, France ^ JOHN fuller, Mineral Assistant, British Museum...omitted, how is it possible to select two golds, two silvers, two rhodochrosites, and two siderites? When the...localities: the Egyptians were working gem and gold mines on the Upper Nile River, the Greeks were busy with |  | | Journal (issue) | | FineMineral.com NATIVE SILVER WITH PYRRHOTITE AND CALCITE Kongsberg Silver Mines, Kongsberg, Buskerud,... Workings along veins in part of the Berezovsk mines. Figure 30. Overview of gold occurrences in the...Westward Look Show Fluorite “Venus“, Mont-Blanc, France, 8 cm Photo: Malte Sickinger MARCUS BUDIL Monaco...Guatomo mine at Tham Thalu. Production data for the mines during this period are lacking, but by the time...time of Pui Sae Tan’s death in 1878, the family mines were thriving, and the principal export commodities |  | | Book | | Stevia Thompson Bob & Susan Thompson for Idaho Opal Mines, Inc. Christiane Toft in memory of Kaj Toft Douglas...point, plot on a map the location of nearly all the mines, prospects, and surface outcrops that have produced...minerals were pouring forth, year after year, from mines relatively close at hand? This is what brought dealers...stunningly beautiful copper, lead and zinc minerals from these surrounding mines and deposits. Then there...mineralogist, ample reason for visiting the show. Local mines and deposits (in Arizona and across the Mexican |  | | Journal (issue) | | . n o t e s f r o m t h e y EDITOR SILVER ISSUE Among the precious metals, gold has always...behind, however, is silver. Though today only about 2% as valuable by weight, silver was nearly on a par...discerns a warm richness to silver that all the others lack. Furthermore, silver has been found as superb...famous and in teresting localities for native silver. Of course there are hundreds, perhaps thousands...and plenty remain for future issues. Unlike gold, silver forms the basis for an extensive array of addi |  | | Journal (article/letter/editorial) | | Australia’s best specimen minerals. The Elura lead-zinc-silver deposit in western New South Wales has produced...green mimetite crystals and Australia’s best wire silvers (Chapman and Scott 2005). The New England region...molybdenite specimens from the Deepwater and Kingsgate mines (see Cook in press) and has also produced beautiful...cassiterite crystals, to 6 cm across, from the tin mines around Elsmore (Lawrence 1998a,b). In the Northern...world-class saleeite specimens from the Ranger mine. The copper deposits in the Mount Isa–Cloncurry region of Queensland |  | | Journal (issue) | | Disused Tin Mines Starting with the basics, all three of these localities are disused tin mines. Stavoren...1851, Wheal Garland produced 40,750 tons of7.5% copper ore, 15 tons of black tin, and 18 tons of arsenic...dewatered to the 30fm level, and the margins of the old copper stopes, together with some surface dumps, were...1907, and the deposit delivered 4,000 tons of 12% copper ore during the First World War. Drilling in 1917...dormancy, the mine was reactivated and worked for copper and tin during the Second World War (Jensen, 1985) |  | | Report (chapter) | | Sillitoe Department of Mining Geology, Royal School of Mines, Imperial College, London, England 553.067:553...exclusive, source o f ore components. Manto-type copper deposits are best known from Chile and southern...immediately following their accumulation. Copper and subordinate silver were leached from the volcanic rocks...origfn may l~e similar to that of the manto-type copper deposit~ Volcanogenic magnetite (+ hematite, apatite...sulphide deposits related to submarine volcanism, and copper and tin deposits of porphyry type related to sub-volcanic |  | | Journal (article/letter/editorial) | | Figure 1. Map showing Hancock where the float silver that was recovered from the glacial till was found;...49913 datolite@charter.net An UNUSUAL Glacial Silver Find In Michigan’s Keweenaw Peninsula Twenty-third...articles on the mines and minerals of Michigan’s Copper Country F loat copper and silver are defined as...experienced over the past 2 million years. The copper and silver were transported by glacial ice, and when...ice sheet, the copper and silver were dropped in place. Spectacular masses of float copper have been found |  | | Show/Event (guide) | | view of Gem Crystal Production at Major Tourmaline mines, and the Ouro Preto Topaz Mine Jeff Scovil Travels...thousand years ago) there were only about 200 metal mines operating in all of China. With some notable exceptions...operated by seasonal, local, unskilled labor. Small mines were 500n worked out and the local farmers who had...Thus, despite a few large operations for iron and copper, no true nining culture (a hereditary and local...communities of Excavated ruins of the Tonglushan copper mine, Hubei Province, active from the 11th century |  | | Book | | MINES MINERS MINERALS AND OF WESTERN NORTH CAROLINA Western North Carolina’s Hidden Mineralogical...on Data Presnell, Lowell, 1941– [Mines, miners, and minerals] Mines, miners, and minerals of western.../ Lowell Presnell. p. cm. Originally published: Mines, miners, and minerals. Alexander, NC: WorldComm...(soft cover), ISBN: 1-933251-06-9 (hard cover) 1. Mines and mineral resources—North Carolina—History. I...5 Introduction 7 1. Early Explorers 9 2. Early Mines 11 3. Iron Mining 15 4. Cranberry Forge 19 5. Gem |  | | Journal (article/letter/editorial) | | However, this paper will deal pri marily with the mines where the prin cipal collecting is for mineral...been collected. Many who collect at the Creede Mines do not know what minerals to look for and most are...deal only with the mines surrounding the town of Creede. There are numerous other mines and ghost towns...San Juan Mountains. For descriptive purposes the mines will be grouped into four areas as shown on the...East and West Willow Creek areas. History In 1869 silver was discovered at the Monon Hill area at the site |  | | Journal (article/letter/editorial) | | in the world. Andean mines account for more than 45 percent of the world's copper production, nearly 30...30 percent of the silver production, significant amounts of lead, zinc, and gold, and an array of industrial...and build the huge plutonic masses for the great copper porphyries. The wealth of the Andes has attracted...placer deposits and mining and smelting oxidized copper ores in central Peru about 1500 B.C. By the time...Inca) had words for gold (cori), silver (colqui), the ruby silvers (cochiso), and argentite (tucuna) |  | | Journal (article/letter/editorial) | | Michigan’s Copper Country Eleventh in a series of articles on the mines and minerals of Michigan’s Copper Country...Superior storms, exposing calcite/quartz veins in the Copper Harbor Conglomerate. Author’s photo. TOM ROSEMEYER...minor and major, continue to be made in Michigan’s Copper Country. The May/June 1998 and the November/December...from the mining industry, he has returned to the Copper Country on a seasonal basis to engage in mining...disappearance of smaller mine dumps. The end of copper mining in the Portage Lake Volcanics began in September |  | | Journal (issue) | | Reno, Nevada photography Nelly Bariand Paris, France Werner Lieber Heidelberg, West Germany Olaf Medenbach...(Elmhurst, IL) Gilbert Gauthier (Maisons-Laffitte, France) Gemmological Institute o f America, Michael Waitzman...Mateo, CA) Thomas N. McKee, Arizona Turquoise and Silver (Scottsdale, AZ) John C. Medici (Dublin, OH) Frank...lous photos of the abandoned Japanese stibnite mines,” he said to me when I visited him in Fallbrook;...Nevada Hale-Norcross mine, Virginia City, Nevada Copper Queen mine, Bisbee, Arizona Red Cloud mine, Yuma |  | | Report (issue) | | Resources Consultative Committee Mineral Dossier No 25 Silver Compiled by J. M. Ridgway, BSc, PhD, CEng, MIMM... Limestone and Dolomite No24 Fireclay No25 Silver Sand and Gravel Celestite PREFACE The Mineral...Refined Metals Limited, Carnon Consolidated Tin Mines Limited, llford Limited, Johnson Matthey Chemicals...Mh1eralogy Natural abundance of silver Silver minerals 3 3 5 Silver Ore Deposits and their Associations...stockpiles and commodity exchange stocks Hoarded silver Technology �� Mineral processing Primary smelting |  | | Journal (issue) | | now known to include chalcocite, native copper and wire silver, as well as some of the world’s best crystals...Жезқазған; pronounced “Jez-kahzgahn”) means “Copper Kettle” or “Copper Diggings” in Kazakh, an appropriate name...name for one of the world’s great stratiform copper deposits. It is located in the cool, semi-arid heart...of four mines that exploit the Dzhezkazgan sandstone copper deposit). In addition, the mines of the Zhilandy...of the Dzhezkazgan deposit have been worked for copper as long ago as the Late Bronze age. According to |  | | Journal (article/letter/editorial) | | datolite@charter.net Keweenaw Figure 1. A delicate group of copper crystals collected at the Ojibway No. 1 mine in...in a series of articles on the mines and minerals of Michigan’s Copper Country Figure 2. Generalized...Generalized map of the Michigan copper district showing the location of the new mineral finds discussed in the text...Michigan’s Copper Country T he Michigan Copper Country, also known as the Lake Superior native copper district...western end of Upper Michigan. The now-dormant copper mining industry, which flourished from 1844 through |  | | Journal (issue) | | identification card that secures the privileges of many mines, quarries, clubs, societies, museums, libraries...MINERALS Courtesy U. S. National Museum. t AZURITE COPPER QUEEN MINE, BISBEE, ARIZONA ROCKS and MINERALS...MINERALS ' 3 AZURITE Of the many varieties of copper min- sale. erals, azuri te furnishes the most beautiful...also common years ago in another copper mine, at Chessy, near Lyons, France. In fact the crystals of azurite...chessy copper. Spherical concretions of azurite, mostly Azurite is a carbonate of copper and about |
|
