 | | Journal (article/letter/editorial) | | Atlantic University] at 04:09 22 November 2014 Covellite Summitville, Rio Grande County, Colorado Two minerals...environments: chalcocite and the somewhat less abundant covellite. Both can also form as primary minerals under...periods when some chance discovery in an active mine makes them briefly available to collectors. Chalcocite...column (Cook 1995), and so it was suggested that covellite be described as well for completeness. In keeping...fine Summitville covellite was nominated as the Connoisseur’s Choice specimen. Covellite is a relatively |  | | Report (issue) | | Covellite CuS c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. Point Group:...material. In Italy, from Vesuvius, Campania [TL] and as large crystals from the Calabona mine, Alghero, Sardinia...Kedabek, Caucasus Mountains, Russia. In the Bou-Skour mine, Bou Azzer district, Morocco. In the USA, from Butte...in Arizona. In the Sierra de Famatina, La Rioja Province, Argentina. Name: To honor Niccolò Covelli (1790–1829)...of Vesuvian covellite. Type Material: Mineral Museum, University of Naples, Naples, Italy, 12338. References: |  | | Report (issue) | | Piedmont, Italy—and some are from unique but fairly familiar finds—boleite from the Amelia mine, Baja California...==== Sapphirine, 3 cm, from Androy, Toliary Province, Madagascar. The Arkenstone specimen and photo...mining area, Herrería-Valdáliga-Rionansa, Santander Province (region of 4 ===============================...classic—witness (below) the galena from the Dörnberg mine, Ramsbeck district, Nordrhein-Westfalen, Germany...recent finds on the dumps of the old La Vidale lead mine, Bréziès, Asprières, Aveyron, France, there is this |  | | Report (issue) | | bornite, tetrahedrite–tennantite, chalcocite, covellite, barite, quartz. Distribution: A widespread mineral...La Rioja Province. In the Philippine Islands, at Mancayan, Luzon. From the Chinkuashi mine, Keelung,...Kaize-mura, Nagano Prefecture, and in the Teine mine, Hokkaido, Japan. In the USA, in splendent crystals...Tirol. From Bor, Serbia. In Italy, on Sardinia, at Alghero and Calabona. At Tsumeb, Namibia. Name: From |  | | Journal (article/letter/editorial) | | Hydrothermal Evolution in the Calabona Porphyry CopperSystem (Sardinia, Italy): The Pathto an Uneconomic... Montreal, Quebec, CanadaH3A2A7 Abstract The Calabona porphyry coppersystem is developed in a small...dacitic intrusion located in northwestern Sardinia (Italy).Earlyhydrothermal alteration produced a potassic...alteration. The earliest fluidthatcirculated in the Calabona porphyry complex hadhighsalinity (40-60 wt % NaC1...mining. Theverylowconcentration of Cu in the Calabona deposit is surprising, in viewof wall-rock alteration |  | | Journal (article/letter/editorial) | | pp. 425-436 THE CALABONAINTRUSIVE COMPLEX (SARDINIA,ITALY): EVIDENCE FOR A PORPHYRY COPPER SYSTEM...Scienze dellaTerra,via delleCerchia3, 53100Siena,Italy Introduction Europeanplate,whichstartedin the Late...Calabonasubvolcanic complex.Theseinvestiga- In western Sardinia,sparseore mineral occurwith thesemid-Tertiarymagtionshaveled...distributedstockworkveins crosscuttingthe northwesternSardinia(Italy), approximately3 km volcanicformations(Cocozzaet...ofAlghero(Fig.1). Sincethepre-EtruscanandSpampanoni, The Calabona complex representsa distinct and age,the Cala |  | | Journal (issue) | | (a mass of small cavities), from Cagliari, Sardinia, Italy. Right: Needle-shaped crystals of aurichalcite...Zaire, and in various parts of F ranee, Greece, Italy and Russia. FACT Above: An example of aurichalcite...of Jibethenite crystals from Kakanda in Shaba Province, Zaire. m r- LI M N E R A L S ex: w z...BEAUTIFUL DARK BLUE COVELLITE CRYSTALS ARE ::lJ HIGHLY-PRIZED BY COLLECTORS. WHEN COVELLITE )> \·-v" OCCURS...WHICH IS OF ---- ' GREAT VALUE TO INDUSTRY z Covellite was first discovered in the 19th century amongst |  | | Journal (article/letter/editorial) | | Lattanzi Epithermal precious metal deposits of Italy±an overview Received: 13 October 1998 / Accepted:...view of Italy. It was only in the late 1980s that two districts were recognized, in Sardinia and southern...UniversitaÁ di Cagliari, via Trentino 51, Cagliari, Italy alent). The onset of (presumably meteoric) hydrothermal...records and/or exploration potential are in Spain, Italy, Yugoslavia, Hungary, Bulgaria, Slovakia, Ukraina...in Italy was neglected until the late 1980s, when two main districts were recognized in Sardinia and |  | | Report (issue) | | colusite, stannoidite, pyrite, chalcopyrite, covellite, sphalerite, bismuthinite, silver sulfosalts,...the Lepanto mine, Mankayan, Luzon, Philippines [TL], as an ore mineral. In the Chinkuashi mine, Keelung...localities. From the Sierra Famatina, La Rioja Province, Argentina. In the Julcani district, at Cerro...Goldfield, Esmeralda Co., from the Golden Chariot mine, Jamestown district, Nye Co., and in the Burrus...Chelopech deposit, Sofia, Bulgaria. From Calabona, Sardinia, Italy. At the Kadzaharan deposit, Armenia. From |  | | Journal (article/letter/editorial) | | The spectral shapes of bornite, chalcocite, and covellite are distinctly different from enargite. The edge...detailed study of enargite alteration at Furtei, Sardinia by MUSU (2007) shows a widespread occurrence of...conditions, although not representative of most mine environments, has been largely studied in relation...bornite calcium arsenate chalcocite chalcopyrite covellite Cu2O malachite realgar sodium arsenite tennantite...(Carlo Erba) Natural sample from Baccu Locci, Sardinia Natural sample from Montecatini Val di Cecina |  | Di Benedetto, Francesco, Borgheresi, Miria, Caneschi, Andrea, Chastanet, Guillaume, Cipriani, Curzio, Gatteschi, Dante, Pratesi, Giovanni, Romanelli, Maurizio, Sessoli, Roberta (2006) First evidence of natural superconductivity: covellite. European Journal of Mineralogy, 18 (3) 283-287 doi:10.1127/0935-1221/2006/0018-0283 | Journal (article/letter/editorial) | | First evidence of natural superconductivity: covellite FRANCESCO DI BENEDETTO1, *, MIRIA BORGHERESI1...Università di Firenze, Via G. La Pira, 4, 50121 Firenze, Italy *Corresponding author, e-mail: dibenefr@geo.unifi...Sesto Fiorentino, Italy Abstract: The singular conductive properties of natural covellite were investigated...measurements. Two natural hexagonal covellite lamellae coming from Calabona (Italy) and Butte (USA), respectively...features confirm covellite as a Class I superconductor. This peculiar property of covellite, never observed |  | | Journal (issue) | | PRIVATE MINERAL COLLECTIONS IN ITALY WITH AN INTRODUCTION BY FEDERICO PEZZOTTA CURATOR OF MINERALOGY...JANUARY-FEBRUARY, 2011 PRIVATE MINERAL COLLECTIONS IN ITALY Participating Collectors: Marco Amabili Silvia...Aragonite, 25 cm Cozzodisi mine, Casteltermini, Agrigento, Sicily, Italy. Adalberto Giazotto collection... MINERAL COLLECTING IN ITALY )In OutCine of MINERAL COLLECTING IN ITALY Federico Pezzotta Mineralogy...literature and music, scholars and aristocrats in Italy assembled some of the first great collections of |  | Orgeval, J. J., Caron, C., Lancelot, J., Omenetto, P., Gandin, A., Libertà, A., Courjault Radé, P., Tollon, F., Laurent, Ph., Maluski, H., Béziat, P., Salpeteur, Y., Sini, G., Elter, F.M., Baratto, M. (2000) Genesis of polymetallic and precious-metal ores in the Western Mediterranean province (Cévennes, France–Sardinia, Italy) Applied Earth Science, 109 (2) 77-94 doi:10.1179/aes.2000.109.2.77 | Journal (article/letter/editorial) | | in the Western Mediterranean province (Cévennes, France– Sardinia, Italy) Downloaded by [Laurentian University]...Lower Palaeozoic Iglesiente domain of southwest Sardinia and the southern Cévennes–Montagne Noire Variscan...gold province of Sardinia is genetically quite distinct from the Palaeozoic lead–zinc province of Iglesiente...(southern Cévennes, Montagne Noire) and southwestern Sardinia (Iglesiente–Sulcis). Essentially Cambro-Ordovician...attractive example54 and the Tertiary gold of western Sardinia is a new, economically interesting discovery.77a |  | | Journal (issue) | | THE EARTH’S TREASURES • MINERALS & JEWELRY COVELLITE Marveling Over Mysterious ‘Indigo Copper’ + ...qualifications VOL. 49 NO. 11 • NOVEMBER 2019 10 COVELLITE A Rare and Mysterious Contributor to Advancement...without notice. On The Cover Covellite specimen, Calabona Mine, Sardinia, Italy (ROB LAVINSKY, The Arkenstone/iRocks...(and a few other fortunate campers) to a diferent mine and teach us the techniques of mining there. hey...distant mountains, a lake, and a tiny town. At the mine hauled out various screens of diferent diameters |  | Ruggieri, Giovanni, Lattanzi, Pierfranco, Luxoro, Silvana S., Dessi, Roberto, Benvenuti, Marco, Tanelli, Giuseppe (1997) Geology, mineralogy, and fluid inclusion data of the Furtei high-sulfidation gold deposit, Sardinia, Italy. Economic Geology, 92 (1) 1-19 doi:10.2113/gsecongeo.92.1.1 | Journal (article/letter/editorial) | | Dataof the FurteiHigh-Sulfidation GoldDeposit,Sardinia, Italy GIOVANNI lqUGGIERI, InstitutoInternazionale...Ricerche Geotermiche, CNR,PiazzaSolferino 2, 56100Pisa,Italy PIERFRANCO LATTANZI, Dipartimento di Scienze dellaTerra...09127Caglian', Italy SILVANA S. LUXORO, ROBERTODESSi, Progemisa, Via Contivecchi 7, 09122Cagliari,Italy MARCO...50121Firenze,Italy Abstract Theepithermal high-sulfidation golddeposit at Furtei(Sardinia, Italy)contains...tionoccurs (Tanelliet al.,1991);in Sardinia, epithermal gold The Corsica-Sardinia microplateis a formersegmentof |  | | 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...may be replaced by bornite, galena, chalcocite, covellite, and pyrite (Uytenbogaardt and Burke 1971). Enargite...the Longfellow mine, Red Mountain district, San Juan County (fig. 1). The Longfellow mine was discovered...until 1966 when the mine was allowed to flood. Enargite crystals from the Longfellow mine have been found |  | | Book (volume) | | to try to list all of the mining geologists and mine managers who made these visits possible and who...Netherlands-Extreme Western Germany, Switzerland, and Italy. Volume V (or Volume III, Part III) will take up...current electoral and administrative departments. In Italy the deposits are listed alphabetically, except for...east of Coimbra (N40°12 N, 8 ° 2 5 W ) in the province off Beira f Baixa and some 25 km slightly NofW...crude ore averages about 0.3 per cent of WO3. The mine can produce 2000 to 2500 tons per day of tungsten |  | | Book | | with Orbis Publishing Limited abcdefgh Printed in Italy by IGDA, Novara Adapted from the original Italian...corundum 25, 25 cornetite 66, 66 biotite 80, 104 covellite 8, 8 betafite 28 binnite 11 bismuthides 8 bismuthinite...(Yugoslavia), some mines on Mount Amiata, Tuscany (Italy), and Almadén (Spain). In the United States it...Filiform silver. Nicola Secci, Sarrabus, Sardinia (Italy) Dendritic copper famous (Michigan) 1822...especially near Kimberley); diamonds from the Kimberley mine are embedded in ultrabasic blue rock called kimberlite |  | | | | Translation © Orbis Publishing Limited 1972 Printed in Italy by |GDA, Novara SBN O 85613 0001 For many years...corundum 25, 25 cornetite 66, 66 cotunnite 22, 22 covellite 8, 8 crandallite 67 crocidolite 100 crocoite 62...(Yugoslavia), some mines on Mount Amiata, Tuscany (Italy), and Almadén (Spain). In the United States it is... Filiform silver: Nicola Secci, Sarrabus, Sardinia (Italy) endritic copper rmation. Houghton fichigan)...covered with calcite. Casteltermini, Agrigento (Italy) look more different. Theirs is the most notable | | | Book | | Translation © Orbis Publishing Limited 1972 Printed in Italy by IGDA, Novara SBN O 85613 0001 For many years...corundum 25, 25 cornetite 66, 66 cotunnite 22, 22 covellite 8, 8 crandallite 67 crocidolite 100 crocoite 62...59 zippeite 62 zircon 77, 78, 78 zoisite 88 THE MINE LKINGDOM All physical bodies in Nature can be...or slightly rotated Vitreous. Like glass 3 THE MINE Class I: native ·elements Chemical elernents found...(Yugoslavia), son1e n1ines on Mount Amiata, Tuscany (Italy), and Almaden (Spain). In the United States it is |  | Gu, X. X., Tang, J. X., Wang, C. S., Chen, J. P., He, B. B. (2003) Himalayan magmatism and porphyry copper-molybdenum mineralization in the Yulong ore belt, East Tibet. Mineralogy and Petrology, 78 (1) 1-20 doi:10.1007/s00710-002-0203-6 | Journal (article/letter/editorial) | | mineral assemblage comprises pyrite, chalcocite and covellite. These occurr within microfractures as rims around...sparse relics. The presence of chalcocite and covellite replacing chalcopyrite in the primary argillic...and ®nally an enrichment zone of chalcocite covellite digneite (4±10% Cu). A ¯uid inclusion study...characterized by the presence of hematite malachite covellite chalcocite delafossite native copper, are...Ghezzo C, Stefanini B (1992) The Calabona intrusive complex (Sardinia, Italy): evidence for a porphyry copper |  | | Book | | Geografico De Agostini, Novara 1967 Printed in Italy by IGDA, Novara SBN 0 85613 108 3 Crystallography...crystallise in this system, notably beryl, pyrrhotite, covellite, molybdenite, apatite, pyromorphite, mimetite...garnet known as hessonite . Val d’Ala, Piedmont, Italy (4 mm). The rhombic-shaped face in the centre is...Cubic system. Triglyphic pyrite, from Traversella, Italy (30 mm). The corner of the crystal is interrupted...form. 17 Cubic system. Pyrite from Grosseto, Italy (10 mm). The pentagona l dodecahedral form ofthis |  | Santana, Miriela María Ulloa, Moura, Márcia Abrahão, Olivo, Gema R., Botelho, Nilson Francisquini, Kyser, T. Kurtis, Bühn, Bernhard (2011) The La Unión Au ± Cu prospect, Camagüey District, Cuba: fluid inclusion and stable isotope evidence for ore-forming processes. Mineralium Deposita, 46 (1) 91-104 doi:10.1007/s00126-010-0313-8 | Journal (article/letter/editorial) | | chalcopyrite, and sphalerite, and late to supergene covellite and chalcocite. Calcite is found in early veinlet...are abundant and contain minor chalcopyrite and covellite and locally barite, which pseudomorphously replaces...containing Au-bearing pyrite, chalcopyrite, and covellite from the La Unión 94 Miner Deposita (2011)...Hydrothermal evolution in the Calabona Porphyry Copper System (Sardinia, Italy): the path to an uneconomic |  | | Journal (issue) | | 71 An Occurrence of Djurleite at West Caradon Mine, Cornwall I.A. Lawrence 81 NOTE Cinnabar from...native silver, native copper with chrysocolla, covellite, malachite, diaspore, muscovite, hematite, calcite...specimen are native silver and hematite. COVELLITE Covellite has been found at only a single locality...reclaimed ground (see below). Three small irregular covellite masses, identified by visual means alone, occur...silver, muscovite, occasional hematite, and rare covellite. This association is described in further detail |  | | Book (edition) | | hexagonal dipyramid (first MINERALS graphite covellite and second order) molybdenite dihexagonal prism...sample of scheelite, coming from Traversella (Turin, Italy), in light natural (above) and exposed Other...that a collector in the field should visit are mine dumps and quarry rubble heaps, where there will...small deposits are found near Pisa and Florence (Italy). Uses Native copper rarely occurs in large enough... lb) was mined. How- been from the Guanajuato mine (Mexico), about 500 billion kilos (460,000,000 tons) |
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Calabona Mine, Alghero, Sassari Province, Sardinia, Italy