 | | 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 |  | | Journal (issue) | | ...................549 by T. P. Moore COVER: BORNITE, 3.5 cm, from Mine 21, Dzhezkazgan mine group,...copper and wire silver, as well as some of the world’s best crystals of betekhtinite, bornite, stromeyerite...of four mines that exploit the Dzhezkazgan sandstone copper deposit). In addition, the mines of the Zhilandy...Spassky Copper Mine Ltd., were granted concessions on mines in Kazakhstan, the latter acquiring the rights to...Because professional expertise was needed, the mines were developed under the direction of Europeans |  | | 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 |  | | Journal (issue) | | Associate Editors Pierre Bariand Sorbonne Paris, France Bill Birch Museum of Victoria Melbourne, Australia...Schwab Orleans, France Associate Photographers Nelly Bariand Sorbonne Paris, France Dan Behnke Northbrook.............. 487 by J. Scovil Sainte-Marie-aux-Mines 2001 .............................................Thirty-two, Number Six by J. A. Mandarino COVER: BORNITE crystal, 1.6 cm, on quartz , from Dzezkazgan, Kazakhstan...1857; apparently, all of the fine chalcocite and bornite specimens now extant were found during this phase |  | | Report (issue) | | pandemic has wiped out late June’s Ste.-Marie-aux-Mines Show altogether, along with many other smaller shows...been a significant presence at the Ste.-Marie-aux-Mines Show in late June, and this year he dealt creatively...specimens lately taken from one of the polymetallic mines at Trepča, Mitrovica, Kosovo. A few similar-looking...show’s plethora of fabulous bournonites from the mines of the Viloco district, Bolivia. Nevertheless the...recently from the Gila Fluorspar District near Silver City, Grant County, New Mexico. Mike does not have |  | | Report (chapter) | | Sillitoe Department of Mining Geology, Royal School of Mines, Imperial College, London, England 553.067:553...following their accumulation. Copper and subordinate silver were leached from the volcanic rocks and deposited...metals in various proportions, but also base metals. Silver occurs as argentite (or acanthite) and arsenic-...000 oz of silver from both Pachuca and Guanajuato. Furthermore, quite a number of the mines have yielded...yielded more than $1000 000 000 worth of silver and gold at present metal prices. The belt is broadly coextensive |  | | Journal (article/letter/editorial) | | diameter,oriented perpendicular to bedding.Chalcocite,bornite,andtennantite(ca. 1-4.3% Ag) are the major ore...stromeyerite, mckinstryite, jalpaitc,andthe ruby silvers. Pyriteandmarcasite are subordinate constituents...distinguished; six of these contain,at least locally, copper-silver mineralization.In order to reconstructthe depo...carbonate veins. Where silver occurs as discrete has not been observed. Native silver occurs as fine disseminations...discretegrains(commonly rimmedby tennantiteand chalcocite-bornite) or asinclusions in chalcocite,bor- mantodrawsextensivelyon |  | | Journal (issue) | | BUTTE, MONTANA Butte, Montana Minerals, Mines and History The Mineralogical Record Volume 33 • Number...January–February, 2002 Contents Butte, Montana: Minerals, Mines and History By Robert E. Jenkins & Jerry A. Lorengo...January–February, 2002 3 Butte, Montana Minerals, Mines, and History Robert E. Jenkins 6 Columbus Circle...22215 For more than 100 years Butte’s dozens of mines have been a source of extraordinary specimens of...Specimens of copper sulfides and sulfosalts like bornite, chalcocite, colusite, covellite, digenite, djurleite |  | | Journal (article/letter/editorial) | | stages. The sequence consists of earlyarsenopyrite, bornite,ehaleopyrite, pyrrhotite,andmolybdenite; intermediatesphalerite...dergroundminingoperationsand producescopper, zinc, and silver from skarn-typeorebodies.The ore arsenic,and silverthan...Anticline •- Syncline • Fault --- Vein [] • Mines 0 IO0 • • • • • 500 m • FIG. 2. Surfacegeologicmap...chalcopyrite,pyrite, stibnite,pyrrhotite,andruby silvers,aswell aslarge amountsof calcite;its Pb gradesare...havebeendepositedbeforeandwith sulfides.The lamellaein bornite,someof whichmaybe nucleifor second generation occurs |  | | Journal (article/letter/editorial) | | several in North Carolina, including the well-known Silver Hill occurrence in Davidson County, and the McMakin...and mines of the Virgilina district, Halifax County, Virginia (Dietrich 1990). The great silver occurrences...widespread and locally abundant acanthite. Many mines of the Colorado mineral belt contained important...although it was apparently sparse in some famous silver districts, such as Leadville, whereas others that...specimens (Eckel 1997). Some wire silver from the White Raven and Black Jack mines of the Ward district, Boulder |  | | Journal (article/letter/editorial) | | JANUARY-FEBRUARY, NICKEL-COBALT-NATIVE EDSON SILVER 1959 ORE No. 1 TYPE3 S. BASTIN. ABSTRACT....reviewed. A primary origin for most of the native silver is indicated but downward enrichment appearsto...may be largely structural, and (b) that at Bruce Mines, Ontario, granite dikes cut the diabaseflows and...of depositssimilar in otherrespects but poorin silver. R--indicates that the.mineral is rare. Only those...Borniteis primary THE NICKEL-COBALT-NATIVE SILVER :;:::X'X ßo3!xoIA• '[gu.tqg S 'e3.txJV'OS'ImOmleH |  | | Journal (article/letter/editorial) | | lined with boulangerite. Assays of over 200 oz. of silver per ton are believed to be due to argentiferous...Iron King, near Olalla, OsoyoosM.D., B.C. (Minist. Mines, 8.C., Ann. Rept., 1949,132). This prospect is on...are closely associatedwith the tellurides while bornite, chalcopyrite, cobaltite, and saffiorite occur...locally abundant. Meneghenite.CrrS.26PbS.TSbrSB. Silver Bell Claim of the California Group, Chikamin Mountain...galena kindly supplied by the B.C. Department of Mines showed blebs of chalcopyrite, lensesof covellite |  | | Journal (article/letter/editorial) | | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...represented at the Mines Museum of Earth Science. The best-known specimens are native silver in a wide array...Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy of the Bulldog Mountain Mine 7 “Close, But...Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary 67 Stope 10 A “High Graders” Paradise...of Mineraliza�on 18 Minerals Overview Na�ve Silver Silver-Bearing Minerals Secondary Minerals Gangue Minerals | | | Journal (article/letter/editorial) | | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...represented at the Mines Museum of Earth Science. The best-known specimens are native silver in a wide array...Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy of the Bulldog Mountain Mine 7 “Close, But...Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary 67 Stope 10 A “High Graders” Paradise...of Mineraliza�on 18 Minerals Overview Na�ve Silver Silver-Bearing Minerals Secondary Minerals Gangue Minerals |  | | Journal (article/letter/editorial) | | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...represented at the Mines Museum of Earth Science. The best-known specimens are native silver in a wide array...Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy of the Bulldog Mountain Mine 7 “Close, But...Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary 67 Stope 10 A “High Graders” Paradise...of Mineraliza�on 18 Minerals Overview Na�ve Silver Silver-Bearing Minerals Secondary Minerals Gangue Minerals | | | Journal (article/letter/editorial) | | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...represented at the Mines Museum of Earth Science. The best-known specimens are native silver in a wide array...Introduc�on 5 Loca�on Views of Creede 6 Rich Silver Legacy of the Bulldog Mountain Mine 7 “Close, But...Treasure Chest, Only Much Larger!” 9 Almost Solid Silver - The Legendary 67 Stope 10 A “High Graders” Paradise...of Mineraliza�on 18 Minerals Overview Na�ve Silver Silver-Bearing Minerals Secondary Minerals Gangue Minerals |  | | Book | | billion tons. Other countries, such as Australia and France and doubtless the U.S.S.R., likewise established...Botryoidal pitchblende, St. Priest vein, Forez, France ( X l) ( Geffroy and Sarcia, 1954). 29 ~ ~ ...pitchblende, St.Remy-Stll'-Durolle, Forez Mts., France. Pyrite crystals (white) on 1ight; in quartz (...also replaces core. Bigay mine, Lachaux, Auvergne, France ( X 100) ( Geffroy and Sarcia, 1954). 30 Descriptions...sands in kaolin at Colettes and Echassieres, Alber, France, and in strean1 placers in Western Australia at |  | | Journal (issue) | | hoar-frost ; here into crowns and circlets, as bright as silver, as if for the gnome princesses to wear ; here...14 miles north, at the Rothschild and other gold mines, pieces of quartz, thickly covered with very brilliant...and everywhere activit}- is evident. The great mines of Butte have produced many line speci mens, but...minerals, such as bornite and chalcocite, flecked with bright patches of native silver, enargite crystals...inch, in cavities of massive enargite and bornite, bornite pseudomorphs after enargite crystals, fine |  | | Journal (issue) | | 2005 The Mineral Collector's Newsletter Native Silver $3.00 First in a Series Bill Shelton & Jeff...of the most popular among mineral collectors is silver. Some very fine examples have recently been recovered...penetration twin). While silver crystals are not common from Mexico, silver wires from Mexico are spectacular...(Continues on page 2) An extremely fine matrix wire silver from Mexico. How NOT to Disperse a Collection...like Peru, has recently produced some nice wire silver specimens. The illustration shows one of the best |  | | Journal (article/letter/editorial) | | group of ore minerals from the San Pedro and other mines in the Sierra de Famatina, La Rioja, Argentina,...mistakenly called dufrenoysite, resembled niccolite or bornite. The chemist winkler's analysis showed copper,...the specimenson which they worked, or visited the mines in which they occurred. Competent mineralogists...WatanabE (1943), who studied luzonite from three mines in Japan and one in Formosal and H. Sawada (1944)...PnopBnrrss Color: deep pinkish brown. Similar to bornite, although darker and with more of a greyish tinge |  | | Journal (article/letter/editorial) | | galena,and tetrahedritewith pocketyvaluesin gold and silver. The gangue is essentially carbonatesand quartz...chalcopyrite-pyrite-gold,chalcopyrite, galena, and galena-silver veins in a 2,ooo foot range. CONTENTS. Introduction.................................... Complex gold-silver-tungstendeposit ....................... 846 847...DEPOSITS. The importantore deposits,carryinggold and silver,are close to, but.generally notin, theringdike...er•enftferous Tefrahedrtfe: always ar•enfiferous A•. Silver Importantmines and •ospecf pits "•Zones • Cp |  | | Journal (article/letter/editorial) | | 70148. Recent work on material from several former mines on the Keweenaw Peninsula, Michigan, has revealed...Baltic mine dump revealed crude wires of native silver associated with chalcocite, quartz, and minor barite...sulfide were noted closely associated with the native silver. The Cu-Ag sulfide is identical in overall appearance...alteration of silver-bearing sulfides and sulfosalts may promote the growth of wire silver; if correct...alteration supported the growth of these wire silvers. Removal of calcite from a small sample from the |  | | Report (volume) | | GEOLOGICAL SURVEY BULLETIN 1237 A study of the silver-zinc and manganese deposits of the Nation's only...district is an economically important zinc- and silver-producing area and virtually the only domestic...Quartz veins that have been mined primarily for silver, zinc, and lead cut both the batholith and the...Such veins on Hope Hill yielded much highgrade silver ore early in the history of the district, and their...places contain recoverable amounts of zinc and silver sulfides. The manganoan carbonates formed mainly |  | | Book | | comparative study from colleagues, institutes, and mines; many samples were collected by the writer himself...nickel + silver -f arsenic + bismuth + uranium, and, to mention a rarity, selenium + lead + silver + copper...higher contents of lead and galena, sphalerite, silver, gold, and palladium. I n places of extreme differentiation...proves the nature of the process. The peculiar bornite occurrences in the Ookiep area, Cape Province,...vein is here used. The "redspar" ("Rotspat") and bornite occurrences of the Siegerland described by SCHNEIDERHÖHN |  | | Journal (article/letter/editorial) | | molybdenite, melonite,chalcocite,stibniteand the ruby silvers. With few exceptions, almostall of the crystal...Basic Structure Derivative-Superstructures (Low) Bornite CusFeS4 220 ø C (High) Bornitc (Cus)FeS4-? [Frueh(...sulfides and sulfo salts containingunivalent copper,silver; trivalent-antimony,-bis- muth,-arsenic;divalentlead;...Tennantite Ruby Silvers Composition bronze CuaFeSl black-brown-red brown-red red (Copper, silver, iron, antimony...antimony, etc.) (Copper, silver, iron, arsenic, etc.) (Silver, arsenic, antimony) Baumhaurite red |
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