 | Staude, S., Mordhorst, T., Neumann, R., Prebeck, W., Markl, G. (2010) Compositional variation of the tennantite–tetrahedrite solid-solution series in the Schwarzwald ore district (SW Germany): The role of mineralization processes and fluid source. Mineralogical Magazine, 74 (2) 309-339 doi:10.1180/minmag.2010.074.2.309 | Journal (article/letter/editorial) | | solidsolution series in the Schwarzwald ore district (SW Germany): The role of mineralization processes and fluid...Tübingen, Wilhelmstrasse 56, D-72074 Tübingen, Germany [Received 30 October 2009; Accepted 28 April 2010]...locations in the Schwarzwald ore district of SW Germany. Electron microprobe analysis is used to correlate...sediments. The basement is subdivided into the Baden-BadenZone (BBZ) in the North (belonging to the Saxothuringian)...1980). From the Middle Triassic to Jurassic, SW Germany was part of a shelf platform with distinct time |  | Ströbele, Florian, Staude, Sebastian, Pfaff, Katharina, Premo, Wayne R., Hildebrandt, Ludwig H., Baumann, Albrecht, Pernicka, Ernst, Markl, Gregor (2012) Pb isotope constraints on fluid flow and mineralization processes in SW Germany. Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 189 (3) 287-309 doi:10.1127/0077-7757/2012/0225 | Journal (article/letter/editorial) | | fluid flow and mineralization processes in SW Germany Florian Ströbele, Sebastian Staude, Katharina Pfaff...With 6 figures and 3 tables Abstract. Southwest Germany hosts a variety of Permian to Cenozoic hydrothermal... Veins are most abundant, but also Mississippi-Valley type and other stratabound mineralizations are...hydrothermal deposit 1. Introduction In southwest Germany, more than 1000 hydrothermal mineralizations of... and carbonate-hosted, stratabound Mississippi Valley-type (MVT) deposits (HILDEBRANDT 1998, PFAFF et |  | | Journal (article/letter/editorial) | | no stolzite equivalent of wulfenite’s Red Cloud mine, yet attractive, somewhat wulfenite-like stolzite...from Chillagoe, Queensland, Australia; the Fat Jack mine, Arizona; and Santa Rosa, Argentina. Stolzite is... These include the well-known Loudville (Mahan) mine at Easthampton, Hampshire County, Massachusetts...mines, Chester County, Pennsylvania, and the Silver Hill mine, Davidson County, North Carolina. It has been...A fine 1.4-un stolzite on matrix from Ste.Lucie mine, Ste.-Lkgerde Peyre, Lozkre, France;Eric Asselborn |  | | Journal (article/letter/editorial) | | in print August 2016 Article Redistribution of silver during supergene oxidation of argentiferous galena:...galena: A case study from the Schwarzwald, SW Germany Maximilian F. Keim, Rafael Vaudrin, Gregor Markl...This contribution investigates to which extent silver released from weathered hydrothermal galena is...supergene ore deposits of the Schwarzwald, SW-Germany, were performed by laser ablation-inductively coupled...between 32 and 18,000 ppm silver. The secondary lead minerals contain 124 ppm silver as a maximum (pyromorphite) |  | Scharrer, Manuel, Sandritter, Katharina, Walter, Benjamin F., Neumann, Udo, Markl, Gregor (2020) Formation of native arsenic in hydrothermal base metal deposits and related supergene U6+ enrichment: The Michael vein near Lahr, SW Germany. American Mineralogist, 105 (5). 727-744 doi:10.2138/am-2020-7062 | Journal (article/letter/editorial) | | U6+ enrichment: The Michael vein near Lahr, SW Germany Manuel Scharrer1,*, Katharina Sandritter1, Benjamin...of Tuebingen, Wilhelmstr. 56, D-72074 Tübingen, Germany 1 Abstract Native arsenic is an occasional ore...Michael vein near Lahr, Schwarzwald, southwest (SW) Germany. Here, galena, sphalerite, and native arsenic are...Technology (KIT), Adenauerring 20b, D-76313 Karlsruhe, Germany. 0003-004X/20/0005–727$05.00/DOI: https://doi.org/10...base-metal vein is the Michael mine near Lahr, Schwarzwald, southwest (SW) Germany, since it operated on a hydrothermal |  | | Journal (article/letter/editorial) | | HYDROTHERMAL VEIN-TYPE DEPOSIT: THE CLARA MINE, SW GERMANY, AS A TYPE EXAMPLE GREGOR MARKL§ Universität...Geowissenschaften, Wilhelmstraße 56, D-72074 Tübingen, Germany MAXIMILIAN F. KEIM Technische Universität München... 85748 Garching, Germany RICHARD BAYERL Ludwigstrasse 8, 70176 Stuttgart, Germany ABSTRACT The Clara...Clara baryte-fluorite-(Ag-Cu) mine exploits a polyphase, mainly Jurassic to Cretaceous, hydrothermal unconformity...unconformity vein-type deposit in the Schwarzwald, SW Germany. It is the type locality for 13 minerals, and more |  | | Journal (article/letter/editorial) | | 1•88, pp. 1583-1596 Ore Deposits at the Fresnillo Mine, Zacatecas,Mexico DELFINO C. RUVALCABA-RUIZ PasajeE...may have causedore mineral precipitationin the silver-richveins as suggested by sharpverticalincreasein...surface)level. Introduction hills, Loma de la Fortuna, Cerro Proafio, and Cerro Populo, with reliefs...veins,of which more than 30 ental (Fig. 1). The mine area,immediatelysouthand havebeenmajorore producers...Severalmanto-type southwestof FresnilloCity (Fig. 2), lies in a valley depositsaswell aschimneyandminordisseminated approximately2 |  | | Report (issue) | | Distribution of the ore districts in the Cordilleran region ............+00+.eeee0: Relation of epithermal...Plate 1. ao Facing Structural map of Cordilleran region showing ore districts associated with domes or...The structural setting of the Ophir, Utah, lead-silver district, and of the Matehuala, Mexico, copper...outward growth of the radial fractures. Copper-silver pipes within the fault zone bounding the graben...as veins, which were reopened to admit gold and silver, and by precious-metal vein deposits in the outermost |  | | Journal (article/letter/editorial) | | LONG-LIVED HYDROTHERMAL SYSTEM IN THE FRESNILLO SILVER DISTRICT, MEXICO: CONSTRAINTS FROM 40Ar/39Ar GEOCHRONOLOGY...Abstract The ore deposits of Fresnillo have produced silver for more than 450 years and contain resources of...31.04 ± 0.05 Ma. Dating of orthoclase from the Fortuna quartz-monzonite was problematic due to excess...well after emplacement of the dated phase of the Fortuna stock and, consequently, it cannot be the source...age between epithermal mineralization and the Fortuna stock is indicative of a long-lived but episodic |  | | Journal (issue) | | MARCH, 1966 Volume 19 COVER LETTERS CALENDAR LOST MINE WILDFLOWERS EXPERIENCE NATURE INDIANS TRUE OR FALSE...there on the Desert 30 Hard Rock Shorty of Death Valley 30 Current news of desert mines 36 Progress of...hiked so many times between the Red Cloud and La Fortuna mines in the Yuma, Arizona, area. But, somewhere...Red Cloud-La That year would seem a little too Fortuna trail. There was a time when early to jibe with...developing claims of his own when the fabulous silver strike at the Red Cloud was made. He must have |  | | Journal (article/letter/editorial) | | pp, 164'2-1646 K-Ar Age Studiesin the Fresnillo Silver District, Zacatecas,Mexico BARBU LANG, GIDEON STEINITZ...Czerna THE Fresnillodistrict ranksamongthe major silver (1976), Kreczmer(1977), Macdonald(1978), Davila...(1986). Retion in 1554, closeto 10,000 metric tonsof silver and centmapping(Vallejo,1983; Simmons,1985, 1986)...more, it wasimportantto test whether sucha major region. About7 kmnorthoftheFresnillominea small depositas...intrusionare someof the more important replacement silver-lead-zincore bodiesof the Fresnillodistrict(seeMacdonaldet |  | | Report (issue) | | element principally sought were listed by the State Mine Inspector of which four actually produced some gold...23 Eureka district................. 23 Hillside mine ~.................................................and Dexter mine................................................................ 25 Cowboy mine........................ 26 Crosby mine 26 Southern Cross mine 27 Mammoth or Hubbard mine..................................... 27 Prescott district 28 Bullwhacker mine................................................ |  | | Report (issue) | | Rincon.________________________________________ La Fortuna-------------_----_--_-__-__---_----___.-_-__-___...and section of the north veins of El Palo Verde mine.______-_____.____________-_-_-__---__--_____ Geology...El Promontorio mine________ Geology of the La Fortuna area__-_____-___-__-_---_--_ Geology of the La...antimony, and locally gold, chloride and bromide of silver, and chalcedony. Postmineral faults are common...than a few inches. In spite of the aridity of the region, the water table is only 10 to 55 meters below |  | O'Neil, J. R., Silberman, M. L., Fabbi, B. P., Chesterman, C. W. (1973) Stable isotope and chemical relations during mineralization in the Bodie mining district, Mono County, California. Economic Geology, 68 (6) 765-784 doi:10.2113/gsecongeo.68.6.765 | Journal (article/letter/editorial) | | Mayeda,1963). isotope geochemistry oflead-zinc, silver,veincopper, Calciteswere reactedwith 100% I-IaPO4...oxygenin silicatesand a typicalepithermal gold-silver deposit located in the Bodieminingdistrict,MonoCounty...and 0.5 for deuterium. million worth of gold and silver (Clark, 1970), lies Potassium,rubidium, and st...more complexassemblage these volcanic rocks the Silver Hill Volcanic Series. sulfosalts. A quartz-sulfidevein... of an irregular,faulted, dump of the Red Cloud mine contained galena, north-trendinganticlineintrudedby |  | | Report (volume) | | ------------- ----------------8. Payson (Green Valley) district ------------------------------------9...(Madera Canyon placers) -------------------45. Silver Bell district ---------------------------------------------...---------------------------------------------82. Fortuna district -----------------------------------------------83... Pima County. Placer mining was active in that region from 1774 to 1849, when the discovery of gold in...attempts were made in various parts of the State to mine placer gravels by drywashing machines, but it was |  | | Report (issue) | | .............................................. Silver district. ........................................................................... Silver Clip or Blaine mine........................................Saxon mine................................ .................................... Princess mine........................................................ Silver King claim............................................................................ Red Cloud mine.......................................... ..... |  | | Journal (article/letter/editorial) | | beneaththe present-daysurfacebeforeformation of silver-richepithermalveins.Becausemany of the ore mineralsin...reliesonthetemporalconstraints dewell known Mexican silver districts such as Pachucaduced from geologicrelationships...relNif•o vein (Simmonset al., 1988), one of the silver- evant features are summarized here. Most bedrock...Fresnilloregionwhichare for mostplaces barrenof silver,lead, or zinc (Fig. 1). This paperinterpretsthe...elevationsandare the youngestTertiary rocksin the region. Similarcompositiondikesare alsoknownin undergroundmine |  | | Report (issue) | | Laguna, and Chocolate Mountains ............... 11 Fortuna basin .............................. 15 Picacho-Bard...18. 19. 20. 21. Map of the lower Colorado River region, showing location of the Yuma area ........................... Gravity profile A-A' across the Fortuna basin from DH-25 to the Gila Mountains ................... Resistivity profile a-a' across the Fortuna basin along the southerly international boundary...trough west of the Gila Mountains, designated the Fortuna basin, that is estimated to contain about 16,000 |  | | Journal (issue) | | Famous Mineral Localities: The Erupción/Ahumada Mine, Los Lamentos District, Chihuahua, Mexico ........minrec.org Front Cover WULFENITE from the Ahumada mine, Los Lamentos District, Chihuahua, Mexico; 6.6 cm...gathering around a natural amphitheater amid the mine buildings and headframes in order to hear what we...cost. So now, although you have just taken your silver-studded boots off the coffee table after having...Mexico-II having been devoted to the famous Ojuela mine). Covered here are four more important and prolific |  | | Journal (issue) | | Kolm-Saigurn/Rauris • Kupfermineralien von der Fortuna Fundgrube/Erzgebirge • Der Blei-Zink-Bergbau bei...bei Staßfurt Sekundäre Ku_pfermineralien von der Fortuna-Fundg_rube bei Seiffen im Erzgebi!:H_e Interessanter... Oder die komplette Minenproduktion der Rogerly Mine aus England - dunkelgrüner Fluorit, saubere Zwillinge...Häufung von „Silberlocken Internet unter dem Titel „Silver manysuperb specimens not have ohne Matrix" auf...entstehen, soll künstlich hergestellt sein. the silver that were recently sold" bis der Argentit vollständig |  | | Book | | .................... Dividend Record of Rosario Mine...................................................He succeeded in obtaining considerable gold and silver from the properties, but was never able to make...possible to recover from 90% to 95% of the gold and silver in the ores instead of approximately 60% as was...of the great mineral wealth, especially gold and silver, of the Republic of Honduras. Special mention should...have him ob tain representative samples of all the mine workings for metal lurgical tests, pick out and |  | | Journal (article/letter/editorial) | | a recreational resource. Barstow: Mohave River Valley Muse-. um, 270 E. Virginia Way, 92311; 6191 256-5452...animals and maintained by an oil company. Death Valley: Furnace Creek Inn and Ranch Resort, Mailing address:...Featured are mining memorabilia and minerals of Death Valley. Downieville: Downieville Museum, Main St. Mailing...be on Main St.) Fortuna: Chapman’s Gem and Mineral Shop and Museum, 4 miles S of Fortuna on US 101. Mailing...ages three and older, as well as adults. Grass Valley: North Star Powerhouse and Mining and Pelton Wheel |  | Markowski, Agnès, Vallance, Jean, Chiaradia, Massimo, Fontboté, Lluìs (2006) Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador. Mineralium Deposita, 41 (4) 301-321 doi:10.1007/s00126-006-0062-x | Journal (article/letter/editorial) | | Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador Received: 24 February...May 2006 # Springer-Verlag 2006 Abstract The Fortuna oxidized gold skarn deposit is located in the northern...which are named from north to south: Cuerpo 3, Mine 1, Mine 2, and Southern Sector. Massive skarn bodies...intrusion which crops out below the skarn bodies in Mine 2 and the Southern Sector. Endoskarn alteration...zone is centered on two 060° trending faults in Mine 2, where the highest gold grades (5–10 g/t) were |  | | Journal (issue) | | Rebecca Penny 28 Archaeology of Mining Landscapes in Germany Martin Strafiburger 32 Mining, Quarrying, Archaeology...For example, many people thought that the Peak's mine waste hillocks were so common that it did not matter...being removed: in the process shafts were filled and mine buildings and other structures were often destroyed...archaeological investigation can further our understanding of mine sites. In each example summarised here the focus...make to the historic landscape character of the region. Much has been written on the general history of |  | | Report (issue) | | describes his recent visits to a small former fluorite mine 2.5 kilometers north of the village of Mihalkovo...border with Greece. Until its closure in 1994 this mine produced fluorite for industrial uses, and, it seems...and sphalerite after calcite, from the Broken Hill mine, Aggeneys, Northern Cape Province, South Africa...epimorphs after calcite, 14.2 cm, from the Broken Hill mine, Aggeneys, Northern Cape Province, South Africa...Frohnau region near Annaberg, in the Erzgebirge (“ore mountains”) of Saxony, eastern Germany. The fluorite |
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