 | | Journal (article/letter/editorial) | | Washington, DC 20013 pohwatp@si.edu Bornite Dzhezkazgan Mine, Dzhezkazgan Karagandy Province, Kazakhstan S ...rarity is bornite, a common mineral found in many copper deposits as massive lumps. The scarcity of bornite...collector community, especially the keen collector of copper minerals. The chemical formula for bornite is Cu5FeS4...as exsolution occurs, evidenced by lamellae of chalcocite, chalcopyrite, and digenite. As the temperature...metallic luster. On fresh surfaces, bornite’s color is copper-red to pinchbeck-brown, but it will quickly tarnish |  | | Journal (article/letter/editorial) | | ]971 Betekhtinite and Bi-Sulfosahs from the Copper Mine of ,,La Leona" (Argentina) BEATRIZ MELBA HONNOREZ-GuERSTEIN...HONNOREZ-GuERSTEIN Miami, Florida Le gisement de cuivre de la mine <>est form6 de filons de minerais recoupant... la chalcosine et la bornite est discut6e. The copper deposit "La Leona" consists of ore veins in a granite...betekhtinite, two Bisulfosalts, electrum, bornite, chalcocite, enargite, tennantite, "Zn-Fahlerz", cuprite...molybdenite, hematite and iron hydroxides, and copper carbonates with quartz and iron carbonates as gangue |  | | Journal (article/letter/editorial) | | containing primary copper sulfides are exposed to near-surface weathering environments: chalcocite and the somewhat...the voluminous literature describing the world’s copper-bearing ore deposits testifies. Nevertheless, fine...discovery in an active mine makes them briefly available to collectors. Chalcocite has been featured in...is commonly massive and foliated. Covellite is copper sulfide (CuS) with small amounts of iron often...alteration of a variety of copper minerals and as pseudomorphs after chalcopyrite, chalcocite, enargite, arsenopyrite |  | Jia, Yan, Sun, He-yun, Tan, Qiao-yi, Gao, Hong-shan, Feng, Xing-liang, Ruan, Ren-man (2018) Linking leach chemistry and microbiology of low-grade copper ore bioleaching at different temperatures. International Journal of Minerals, Metallurgy, and Materials, 25 (3). 271-279 doi:10.1007/s12613-018-1570-2 | Journal (article/letter/editorial) | | Linking leach chemistry and microbiology of low-grade copper ore bioleaching at different temperatures Yan Jia1...2017) Abstract: The effects of temperature on chalcocite/pyrite oxidation and the microbial population...population in the bioleaching columns of a low-grade chalcocite ore were investigated in this study. Raffinate...operated at 20, 30, 45, and 60°C. The dissolution of copper and iron were investigated during the bioleaching...heap bioleaching of secondary copper sulfide in both enhanced chalcocite leaching and acid/iron balance |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...COVER: CHALCOCITE, colored blue by a microthin coating of bomite, 5.7 cm, from the Flam beau mine, Ladysmith...Weardale fluorite miniature for $140, a beautiful 79 mine aurichalcite (2.75 inches) for $140, a Zambian libethenite...Tredwell to carefully document the localities by mine and sometimes by level. It also afforded him superior...uppermost level of the San Carlos mine, while the large, lustrous Rayas mine acanthites (with nearly zero |  | | Journal (article/letter/editorial) | | BRISTOL, HARTFORD COUNTY, CONNECTICUT This classic chalcocite is representative of the best groups of sharp...twins produced from the Bristol, Connecticut, copper mine in the mid-1800s. The 8 by 6 by 4-cm specimen...halcocite is one o f the most important o f all copper-ore minerals, occurring most commonly at shallow...of exquisite chalcocite crystal specimens saved during the nineteenth century from the mine in Bristol...Bristol, Connecticut, A m e r i c a n chalcocite would be known almost exclusively as a drab ore mineral rarely |  | | Journal (article/letter/editorial) | | native bismuth), the latter is in turn rimmed by copper sulfides (mainly djurleite with some covellite)...hydrothermal bismuthinite ore, later affected by supergene copper enrichment then by oxidation processes. The exact...former Petri-Pauli (or Péter-Pál), now Petru şi Pavel mine on Mt. Danilii. Keywords: “dognácskaite”, bismuthinite...Dognecea, Romania), together with gold, pyrite, chalcocite crystals and bismuth ochre. It shows a perfect...to be “a mixture of bismuthinite and chalcocite and other copper sulfides”. Koch (1948) confirmed that |  | | Journal (article/letter/editorial) | | Poland; andrzej.chmielewski@pgi.gov.pl Miedzi Copper Corporation, 00-807 Warsaw, Poland; sspeczik@miedzicopper... Abstract: Polish sediment-hosted stratiform copper deposits associated with Zechstein sediments are...valuable natural resources and the basis for its copper industry. The paper presents the history of their...deposits. To expand resources, time span and scale of copper production in Poland, exploration and definition...those parts of the Fore-Sudetic Monocline where new copper deposits were recently identified. Their resources |  | | Journal (article/letter/editorial) | | carbonate, calcium phosphate, various iron and copper minerals, manganese oxide, fluorite, barite, natrolite...pyrites, siderite, hematite, manganese oxide, various copper minerals, fluorite, barite, natrolite, and the...USA) to silicified wood that contains abundant copper minerals (Turkey “colla wood”). Another mineralogy...Isle of Wight, England Kansas, USA Geiseltal, Germany British Columbia, Canada Ellesmere Island Arctic...Italy California, USA Weimar, Germany California, USA Northern Iceland Germany Hungary Washington, USA [5] |  | | Journal (article/letter/editorial) | | further unique aspects of early diagenetic stratiform copper mineralization in the White Pine-Presque Isle District...Springer-Verlag GmbH Germany, part of Springer Nature 2017 Abstract The curious occurrence of copper-rich early...early diagenetic sediment-hosted stratiform copper mineralization in the finest-grained facies of Nonesuch...the warming of cupriferous brines in the footwall Copper Harbor Conglomerate by latent volcanic heat from...downward sulfide zoning from disseminated pyrite to chalcocite across the top of the cupriferous zone; the absence |  | | Journal (article/letter/editorial) | | Lubin-Sieroszowice mmmg district is a world-class copper-silver, stratabound ore deposit that lies near...characterized by vertical zonation. A central chalcocite zone is flanked above and below by bornite and...just above copper zone, whereas pyrite is usually present in the upper part of the copper zone and together...galena and sphalerite . Metals were transported in a copper-rich oxidizing fluid (3), which probably originated...discordant and is represented by massive and dispersed chalcocite ore present on the peripheries and below anhydrite-cemented |  | Zhao, X.-F., Zhou, M.-F., Hitzman, M. W., Li, J.-W., Bennett, M., Meighan, C., Anderson, E. (2012) Late Paleoproterozoic to Early Mesoproterozoic Tangdan Sedimentary Rock-Hosted Strata-bound Copper Deposit, Yunnan Province, Southwest China. Economic Geology, 107 (2) 357-375 doi:10.2113/econgeo.107.2.357 | Journal (article/letter/editorial) | | Mesoproterozoic Tangdan Sedimentary Rock-Hosted Strata-bound Copper Deposit, Yunnan Province, Southwest China XIN-FU... Abstract Sedimentary rock-hosted strata-bound copper deposits are widespread in the Kangdian region...affected evaporite minerals in the dolostones. Copper sulfides form bedding-parallel disseminations,...stockworks. Copper sulfides are dominated by chalcopyrite with lesser bornite and chalcocite. Hypogene...Introduction SEDIMENTARY rock-hosted strata-bound copper deposits are widespread in the Kangdian region |  | Brinkmann, Pia, Köllner, Nicole, Merk, Sven, Beitz, Toralf, Altenberger, Uwe, Löhmannsröben, Hans-Gerd (2023) Comparison of Handheld and Echelle Spectrometer to Assess Copper in Ores by Means of Laser-Induced Breakdown Spectroscopy (LIBS) Minerals, 13 (1) 113 doi:10.3390/min13010113 | Journal (article/letter/editorial) | | of Handheld and Echelle Spectrometer to Assess Copper in Ores by Means of Laser-Induced Breakdown Spectroscopy... Karl-Liebknecht-Straße 24–25, 14476 Potsdam, Germany Remote Sensing, GFZ German Research Centre for...14473 Potsdam, Germany LTB Lasertechnik Berlin GmbH, Am Studio 2c, 12489 Berlin, Germany Structural Petrology...Potsdam, Germany Correspondence: beitz@uni-potsdam.de Abstract: Its properties make copper one of the...Numerous megatrends are increasing the demand for copper. This requires the prospection and exploration |  | Szopa, Krzysztof, Krzykawski, Tomasz, Banasik, Kamila, Król, Piotr, Skreczko, Sylwia, Mounteanou, Stefania Andriopoulou, Koziarska, Marta (2021) EMPA, XRD, and Raman Characterization of Ag-Bearing Djurleite from the Lubin Mine, Lower Silesia, Poland. Minerals, 11 (5) 454 doi:10.3390/min11050454 | Journal (article/letter/editorial) | | Characterization of Ag-Bearing Djurleite from the Lubin Mine, Lower Silesia, Poland Krzysztof Szopa 1, * , Tomasz...https://doi.org/10.3390/min11050454 Abstract: The chalcocite group minerals are widely distributed among different...hydrothermally affected rocks, the oxidized zone of copper sulfide deposits, or may be even crystalline from...from supersaturated volcanic gases. Some of the chalcocite group minerals form the main Cu orebodies. Djurleite...Djurleite (Cu31 S16 ) is a rare member of the chalcocite group, with a very complex structure. The physical |  | | Journal (issue) | | City, Colorado Delafossite after Copper (?). Bisbee, Arizona Chalcocite after Sphalerite. Butte, Montana...Brookite. Magnet Cove, Arkansas Pyrite after Chalcocite. Cornwall, England Quartz after Diopside. Pierrepont...through: (a) the loss of a constituent-e.g., native copper 396 Bulletin American Museum of Natural History...Certain of the pseudomorphs of chrysocolla after copper minerals such as azurite, liro'Pointed out by Miers...the serpentine pseudomorphs from the Tilly Foster Mine, Putnam Co., N. Y., appear to have formed through |  | Verhaert, Michèle, Madi, Atman, El Basbas, Abdelaziz, Elharkaty, Mohamed, Oummouch, Abdellah, Oumohou, Lahcen, Malfliet, Annelies, Maacha, Lhou, Yans, Johan (2020) Genesis of As-Pb-Rich Supergene Mineralization: The Tazalaght and Agoujgal Cu Deposits (Moroccan Anti-Atlas Copperbelt). Economic Geology, 115 (8). 1725-1748 doi:10.5382/econgeo.4779 | Journal (article/letter/editorial) | | tennantite) by supergene sulfides (bornite, chalcocite) in the large cementation zone; (2) the formation...Tazalaght. The narrow cementation zone hosts chalcocite, resulting from the weathering of hypogene chalcopyrite...records the transition from the cementation zone (chalcocite), the oxidized zone (arsenates), and the gossan...and compounds in mine environments may lead to high arsenic concentrations in mine tailings and waste...prospecting activity because of the up to two hundred copper and polymetallic occurrences of economic interest |  | | Report (issue) | | == Elbaite “mushroom,” 4 cm, from the Palelni mine, Molo village, Momeik Township, Kyaukme District...==== of the rare brochantite of the Los Azules mine in Chile: spherical tufts of emerald-green fibrous...matrix. Brochantite, 4.8 cm, from the Los Azules mine, Quebrada San Miguel, Copiapo Province, Atacama...of bornite pseudomorphous after chalcocite from the Las Cruces mine near Seville in southern Spain: you’ll...brought excellent, newly recovered chalcocite specimens from that mine to the 2020 Tucson Show (see the |  | | Journal (article/letter/editorial) | | Washington, DC 20013 pohwatp@si.edu ENARGITE Longfellow Mine, Red Mountain District, San Juan County, Colorado...tennantite from the north orebody of the Longfellow mine, Red Mountain district, San Juan County, Colorado...orthorhombic.) Enargite and luzonite are ores of copper, with enargite being the more common of the two...in turn, may be replaced by bornite, galena, chalcocite, covellite, and pyrite (Uytenbogaardt and Burke...enargite (Palache, Berman, and Frondel 1944). The copper arsenates of the Tintic district, Utah, and of |  | | Journal (article/letter/editorial) | | COPPER, SILVER, URANIUM LEAD, ORES AND IN VANADIUM, AND SANDSTONE SHALE. WALDEMAR LIN DGREN'...world and generallyfar away from igneousrocksoresof copper, lead, vanadiumand uranium appearin extensiveseriesof...of cases cannotbeutilized'. Theprimary oresare chalcocite,with small amounts of bornite, chalcopyrite and...by atmospheric watersfrom smallquantities 568 COPPER-ORES IN SANDSTONE AND SHALE. 569 of metals disseminatedin...sulphatesolutionscontaining sulphates and perhaps chlorides of copper and lead. Mineral associationand geologicalfeaturesindicatelow |  | | Report (issue) | | Sediment-Hosted Copper Deposits of the World: Deposit Models and Database By Dennis P. Cox1, David A...and four grade-tonnage models for sediment hosted copper deposits. Descriptive models are useful in exploration...models in this report supersede the sediment-hosted copper models in USGS Bulletin 1693 (Cox, 1986, and Mosier...interested in a similar publication on porphyry copper deposits (Singer and others, 2005) also available...not coincide with the Google-Earth images of the mine workings. The authors wish to thank William F. Cannon |  | | Journal (article/letter/editorial) | | the systemis dominatedby the coexistence of the chalcocite-digenite solid solution•vith cobaltsulfides (COS2...appears with a compositionof •Cu0.aCo2.aS 4. The copper-richcompositional limit is extendedon cooling,reachinga...coexistsin the sulfur-richportionof the systemwith copper-bearing cattlerite. Below500øCthe major changes...(<_460øC)anddigenite(_<70øC),andthe appearance of low chalcocite(103øC), djurleite (93øC), and anilite (70øC)...numerousore depositsby minor amountsof membersof the car- copper sulfides (Dana and Ford, 1932). In the rollite |  | | Journal (issue) | | COVELLITE crystal cluster, 3 cm across, From the Leonard mine, Butte, Montana. Frederick H. Pough collection;...Treasure of Butte Hill and Development of the Great Copper Industry” by C. P. Connolly in McClure’s Magazine...from Butte. Specimens of copper sulfides and sulfosalts like bornite, chalcocite, colusite, covellite, digenite...the Butte mining camp, especially in the Kelley mine, was just full of vug holes . . . the holes, some...located in Butte, at the site of the old Orphan Girl mine. . . . So wrote a trainee miner, Jerry Dolph, concerning |  | | Journal (article/letter/editorial) | | Institut, Universit~it Hamburg, Federal Republic of Germany Geology and Mineralogy of the Cu-Ni-Co-U Ore Deposits...impregnations carry copper-iron sulphides (bomite, chalcopyrite, digenite, chalcocite) and nickel-cobalt...skutterudite) with bismuth and uranium as well as some copper arsenides (domeykite, koutekite etc.) in two dormant...deposited in two temporally distinct periods. The older copper sulphide mineralization is structurally controlled...vicinity of Anarak. The only deposits carrying copper sulphides in addition to nickel-cobalt-arsenides |  | | Journal (article/letter/editorial) | | creativecommons.org/licenses/by/ 4.0/). 1. Introduction Copper is one of the most widely used mineral commodities...Cu. Worldwide, 20 million tons (Mt) of copper was the total mine production in 2020 [7]. This number decreased...lockdowns in April and May [8]. Chile remains the major copper producer (5.7 Mt) followed by Peru (2.2 Mt), China...[9]. A range from 60% to 75% of copper is mined from porphyry-copper deposits [10], 20% from sediment-hosted...Ulveryggen deposits in the near future [13]. The mine tailings from this operation are designated to be |  | | Journal (article/letter/editorial) | | Available online xxxx Keywords: Kupferschiefer Red bed copper Re–Os dating Poland Southern Permian Basin a b...mineralization parageneses were analysed: (a) chalcocite as pore space filling in sandstone, (b) disseminated...mineralization in shale, and (c) massive, bedded copper sulphides. The resulting ages fall into two ranges:...continues to be an important global producer of copper and silver. Although the stratigraphic units which...southwest Poland and central Germany (Fig. 1). The deposits in Germany have been subjected to a long |
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