 | | Journal (article/letter/editorial) | | EPITHERMAL GOLD VEINS, BOROVITSA CALDERA, SOUTHERN BULGARIA BRAD SINGERā Department of Geology and Geophysics...Sciences, Acad. G. Bonchev Str. bl. 24 Sofia 1113, Bulgaria Abstract Plutonic, volcanic, and hydrothermal...spatially, leaving behind complex records of multiple ore-forming processes that can be appreciated in detail...hydrothermal systems is ascertained. The Spahievo ore district, Bulgaria, is adjacent to the Oligocene Borovitsa...Deposition of Au ore ca. 300 k.y. prior to caldera collapse distinguishes this ore district from many |  | Marchev, Peter, Kaiser-Rohrmeier, Majka, Heinrich, Christoph, Ovtcharova, Maria, von Quadt, Albrecht, Raicheva, Raya (2005) 2: Hydrothermal ore deposits related to post-orogenic extensional magmatism and core complex formation: The Rhodope Massif of Bulgaria and Greece. Ore Geology Reviews, 27 (1) 53-89 doi:10.1016/j.oregeorev.2005.07.027 | Journal (article/letter/editorial) | | Ore Geology Reviews 27 (2005) 53 ā 89 www.elsevier.com/locate/oregeorev 2: Hydrothermal ore deposits...core complex formation: The Rhodope Massif of Bulgaria and Greece Peter Marchev a,*, Majka Kaiser-Rohrmeier...of Sciences, Acad. G. Bonchev St., 1113 Sofia, Bulgaria Isotope Geology and Mineral Resources, Department...2005 Abstract The Rhodope Massif in southern Bulgaria and northern Greece hosts a range of PbāZnāAg...in the Central Rhodopean Dome (e.g., the Madan ore field) are spatially associated with low-angle detachment |  | | Journal (issue) | | correct shadows. Proper background and depth of field are also important for tricking the brain into seeing...magnifies the image, the narrower the depth of field becomes. Orienting the specimen correctly to get...within a narrow depth of field is difficult and sometimes impossible. Depth-of-field problems can sometimes...Austrian micromounter. Dioptase frome Harquahala Mine, La Paz Co., AZ. capture. Sometimes, the colors...including an azurite from Zacatecas, Mexico, and a sphalerite from the TriState region. When they looked at |  | | Report (chapter) | | Madjarovo base-precious metal ore district, eastern Rhodopes, Bulgaria PETER MARCHEV 1 & BRAD SINGER...Sciences, Acad. G. Bonchev St., BI.24, 1113 Sofia, Bulgaria (e-mail: pmarchev@router.geology, bas. bg) 2Department...USA Abstract: The Madjarovo volcanic complex and ore district comprise alteration styles from potassium...alteration at low stratigraphic levels. However, field relations combined with a plateau age of 32.1 Ā±...and plutonic events, alteration, and deposition of ore (Hedenquist & Lowenstern 1994; Sillitoe 1993, 1995) |  | Repstock, Alexander, Voudouris, Panagiotis, Zeug, Manuela, Melfos, Vasilios, Zhai, Mingguo, Li, Hongzhong, Kartal, Tamara, Matuszczak, Julia (2016) Chemical composition and varieties of fahlore-group minerals from Oligocene mineralization in the Rhodope area, Southern Bulgaria and Northern Greece. Mineralogy and Petrology, 110 (1) 103-123 doi:10.1007/s00710-015-0412-4 | Journal (article/letter/editorial) | | Oligocene mineralization in the Rhodope area, Southern Bulgaria and Northern Greece Alexander Repstock 1 & Panagiotis...deposits from the central and eastern Rhodope area, Bulgaria and Greece (e.g. porphyry-epithermal systems at...enargite/luzonite and native gold in high-sulfidation ore assemblages. Tetravalent tellurium substitutes for...include various types of fahlore-bearing Tertiary ore deposits (e.g. porphyry, epithermal, skarn carbonate... etc.) within an area extending from Haskovo (southern Bulgaria) to Alexandroupolis at the Aegean Sea |  | | Journal (issue) | | sussex mineral & lapidary society SMLS FIELD TRIP TO BULGARIA. Part 2 Journal 205 - January/February...Underdown Pam Pearce Brian Prowse Gary Atkinson Field trip Co-ordinator: Journal Editor & Show Organiser...Journal 205 Jan/Feb 2007 SMLS COLLECTING TRIP TO BULGARIA: A BALKAN ADVENTURE, September 2006 Part 2. Mineral...Collecting, Purchasing and Exchanging The Republic of Bulgaria is situated in the south-east of the Balkan peninsula...almost entirely within the Alpine folded belt. Bulgaria covers part of the Moesian platform to the north |  | | Journal (article/letter/editorial) | | occur in ores containing chalcopyrite, galena, sphalerite, tennantite bornite. Other Ag- and Te-bearing...as a new mineral species from the Bambolla AuāTe Mine, Mexico (Stanley et al., 1986). Prior to acceptance...Epithermal deposits Shadiitsa, Central Rhodopes, Bulgaria (Ag,Cu)4TeS Mayflower, Montana (cervelleite) Eniovche...Reference in quartz veins with galena, chalcopyrite, sphalerite, pyrite, freibergite; anhedral 0.050.08 mm grains... Associated minerals: native silver, pyrite, sphalerite. 1) as small (15ā40 mm) subhedral crystals close |  | Adjo, Fatchessin Bruno, Bolarinwa, Anthony Temidayo, Adissin Glodji, Luc, Dongmo, Franck Wilfried Nguimatsia, Olajide-Kayode, Jerry Olugbenga (2019) A review of the current state of knowledge on gold mineralisation in Benin Republic, West Africa. Applied Earth Science, 128 (1) 2-14 doi:10.1080/25726838.2018.1556503 | Journal (article/letter/editorial) | | and the Pan-African Dahomeyides Belt (modiļ¬ed, Chala et al. 2015). 4 F. B. ADJO ET AL. Aļ¬aton et...1989; Aļ¬aton et al. 1991; Adissin Glodji 2012; Chala et al. 2015). The Atacora quartzite is an orthogneiss...system (Aļ¬aton et al. 1991; Tairou et al. 2007; Chala et al. 2015). The Atacora Unit is composed of an...east to west (Aļ¬aton 1990; Aļ¬aton et al. 1991; Chala et al. 2015). The Kandi Shear Zone activity started...Gold is associated with chalcopyrite, bornite, sphalerite, galena and silver (Kirov et al. 1981; Kriatov |  | | Journal (issue) | | sussex l mineral & lapidary society SMLS Field Trip To Ireland Journal 210 - November/December 2007...Woodbridge OTHER RESPONSIBILITIES Mark Oddy Field trip Co-ordinator: Journal Editor & Show Organiser...SMLS Journal 21 o Nov/Dec 2007 Mineralogical Field Trip to Slovakia Thanks to the efforts of Brian...forward in the organisation of the S.M.L.S. foreign field trip for 2008. A brief outline of the trip is given...Slovakia (based on the experience of the trip to Bulgaria last year, these costs should be around Ā£200) |  | | Journal (article/letter/editorial) | | minerals Article Ore Mineralogy and Typomorphism of Native Gold of the Spokoininsky Cluster of the AldanāStanovoy...AldanāStanovoy Gold Province Larisa A. Kondratieva * , Galina S. Anisimova and Veronika N. Kardashevskaia...Abstract: The ore mineralogy of a new promising target of the AldanāStanovoy gold provinceāthe Spokoininsky...Spokoininsky cluster; the Aldan-Stanovoy gold province; the Aldan shield Citation: Kondratieva, L.A...Introduction V.N. Ore Mineralogy and The Spokoininsky ore cluster is a new promising ore target of the Aldan-Stanovoy |  | | Journal (article/letter/editorial) | | of leadzinc deposits in the Soviet Union. These ore deposits are classified according to the lithological...formation as too complicated and not practical for field work. This new classification is represented by...lead-zinc deposits (pp. 192-208). . The descriptions of ore deposits of each type are well illustrated. Emphasis...given to structural control, paragenetic relation of ore minerals and gangue, zoning, and genetic association...Soviet Union, no data are indicated on ore grade, dimensions of ore bodies, or reserves. In the case of |  | Voudouris, Panagiotis Christos, Spry, Paul G., Sakellaris, Gregory Aarne, Mavrogonatos, Constantinos (2011) A cervelleite-like mineral and other Ag-Cu-Te-S minerals [Ag2CuTeS and (Ag,Cu)2TeS] in gold-bearing veins in metamorphic rocks of the Cycladic Blueschist Unit, Kallianou, Evia Island, Greece. Mineralogy and Petrology, 101 (3) 169-183 doi:10.1007/s00710-011-0144-z | Journal (article/letter/editorial) | | become widely used to help assess conditions of ore formation (Ciobanu et al. 2006), sulfotellurides...sulfotellurides may provide physicochemical constraint on ore formation. Investigation of Ag-sulfotellurides is important...processes, changes in physicochemical conditions during ore formation, and the possible genetic relationships...various ore types including the Shadiitsa P.C. Voudouris et al. 170 epithermal deposit, Bulgaria (Gadzheva...et al. 2004), the Eniovche epithermal deposit, Bulgaria (Dobrev et al. 2002), the intrusion-hosted Funan |  | | Journal (issue) | | SEPTEMBERāOCTOBER 2022 Articles The Akchatau mine, Shet District, Karaganda, Kazakhstan.............E. Wilson & T. P. Moore The Graf Jost-Christian mine, Wolfsberg, Harz Mountains, Sachsen-Anhalt, Germany...the amethyst they could collect at the old Pearl mine in Thunder Bay. They werenāt as successful with...localities such as the Majuba Hill mine, the Tsumeb mine and the Black Pine mine in Montana. More recently he...Chris, sometimes with his family, continued taking field trips in California, Nevada, Utah, Arizona and Mexico |  | | Report (volume) | | The Timing and Location of Major Ore Deposits in an Evolving Orogen Geological Society Special Publications...A. (eds) 2002. The Timing and Location of Major Ore Deposits in an Evolving Orogen. Geological Society...J. 2002. Permo-Mesozoic multiple fluid flow and ore deposits in Sardinia: a comparison with Post-Variscan...A. (eds) 2002. The Timing and Location of Major Ore Deposits in an Evolving Orogen. Geological Society...PUBLICATION NO. 204 The Timing and Location of Major Ore Deposits in an Evolving Orogen EDITED BY D. J. BLUNDELL |  | | Journal (article/letter/editorial) | | most of the silver depositsin the Cobalt area. The ore occursas nearly vertical veins in Huronfan sedimentaryrocks...below a sill-like body of Nipissing diabase. The ore veins are composedof carbonates,arsenides,native...arsenidesand grade of silver ore. The predominantarsenidesin the upperparts of the ore veins are thoseof nickel...cobalt,and in the lower parts,iron. High-grade silver ore is generallyassociated with mixturesof nickel and...of metallurgical melts. The sulfides occur in the ore veins and the wall rock as veinlets and disseminated |  | | Journal (issue) | | Jeffery Self discovered a new beryl crystal on his mine, the Blue Eagle Claim, on Mount Antero. This crystal...features a life-size mine replica that depicts the mining method used in the Franklin Mine. The building that...that houses the mine replica is on the New Jersey State Historic Site Register and was once the engine...engine house for the Taylor Mine that operated from the mid to late I 800's. Like the Hudson Institute, the...frequently replenished. The Buckwheat Dump is a 3.5-acre mine dump that has gained worldwide fame over the years |  | | Report (issue) | | Bolivia, Porco and PotosĆ, are described. Petersenās field work indicates that there are several platinum occurrences...as well as the time involved to process the raw ore to a relatively pure metal. The chapter is mainly...use today. Native copper from the Cerro de Pasco Mine, a shell used as a palette for mixing cinnabar-based...United States and in Latin America, I began my field archaeological studies in the Chao Valley, northern...Petersen, who was leading a copper exploration field program at Cerro Verde. He suggested that I might |  | Alfonso, Pura, Anticoi, Hernan, Yubero, Teresa, Bascompta, Marc, Henao, Laura, Garcia-Valles, Maite, Palacios, Silvia, YƔƱez, Juan (2019) The Importance of Mineralogical Knowledge in the Sustainability of Artisanal Gold Mining: A Mid-South Peru Case. Minerals, 9 (6) 345 doi:10.3390/min9060345 | Journal (article/letter/editorial) | | poorly ruled and information can be obtained from field surveys of miners and Artisanal Mining Associations...rudimentary techniques for mining exploitation and ore processing [11]. Artisanal mining takes place in...the mineralogy of the ore and gangue from the mining sites. A sustainable mine operation should be safe...[24], mainly due to the low gold recovery after ore beneficiation that usually accompanies artisanal...mineralogy and liberation characteristics of the ore before planning the processing procedure. Knowledge |  | Chen, H., Clark, A. H., Kyser, T. K., Ullrich, T. D., Baxter, R., Chen, Y., Moody, T. C. (2010) Evolution of the Giant Marcona-Mina Justa Iron Oxide-Copper-Gold District, South-Central Peru. Economic Geology, 105 (1) 155-185 doi:10.2113/gsecongeo.105.1.155 | Journal (article/letter/editorial) | | by chalcopyrite-pyrite-calcite Ā± pyrrhotite Ā± sphalerite Ā± galena assemblages, locally resulting in grades...south-central Peru, which juxtaposes major IOCG-style ore deposits with widely variable proportions of iron...of high-grade magnetite ore in the central Andes, is centered in Nazca Province, Ica Department, at latitude...PerĆŗ SA., Resource Estimate of the Marcona iron mine, unpub. report, 2003, in Chinese). The Mina Justa...Cu-(Ag) prospect, 3 to 4 km northeast of the Marcona mine (Fig. 2) at latitude 15Ā°10' S, longitude 75Ā°5" W |  | | Journal (article/letter/editorial) | | fluid.Nextto thevein,dissolution ofpyrrhotite, sphalerite, andcassiterite characterizes quartz-greisen...electronmicroprobe compositions. The vite,pyrrhotite, sphalerite, chalcopyrite, cassiterite, andfluo- and K f...standard minerals arepyrrhotite andsphalerite; chala bleached halocontaining littleor no sulfideor cassiterite...Po= pyrrhotite, Py = pyrite,Qtz = quartz,Sph= sphalerite, Tourm= tourmaline, Toz = topaz. andFe203(0...K20 Total 100.17 100.20 Cassiterite (wt %) Sphalerite (vet%) Elementproportions 96.92 Pyrrhotite |  | | Report (issue) | | (1979). Probe analyses (1) from Broken Hill gold mine, Coromandel , New Zealand. ACANTHITE. Nikolaeva...(1979). Probe analyses (4) from Broken Hill gold mine, Coromandel, New Zealand. AGUILARITE. Sugaki et...6528 (1983). Probe analysis, x-ray data from Sanru mine, Hokkaido, Japan. AGUILARITE. Sugaki et al., J....65-77 (1982). Microprobe analyses (5) from Sanru mine, Hokkaido. AGUILARITE. Vassalo Morales and Borodaev...Aufschluss 33, 367-373 (1982). Occurrence at Clara mine Black Forest. X-ray data, a 10.46, c 3.02A. AKERMANITE |  | | Report (issue) | | eee Meee ee ee Coe ee eet cue cceweceaee| BECOME ORE cetereuieteteiee cccetisinaietes siren aie elec cin...slecsvedere cielo n(e breiers wl ape eotve,tians ore oveine ecersielelie wisiere AEA RE WOON DEAN OU...sieielnaiaialeielate 4ie/s/ate auto Goronatton, Mime cis a's cnis ore oo o's wea ale ss c1d e100 ehalatetetetalaiete a\s...eT, Christmasā sce eciavs o/evnjslaie) pete 6 ote ore eer veiaeleisioi eee ae eee IO) GLOBE=M1 am acesw...eteeietee neem TELOME sein: einisrsyere tora ovaiete ore euslieva)elelevensteretanerersacstereler aerate Tarte |  | | Journal (article/letter/editorial) | | shallow chambers as granitoids that passively degassed ore fluids. The compositional diversity of the volcanic...LONGO ET AL. Introduction of high-sulfidation ore deposits with hydrous, calc-alkaline magmatism characterized...alteration zones of vuggy residual quartz containing ore mineral assemblages with relatively high sulfur contents...magmatic record is well preserved in a volcanic field associated with numerous subvolcanic intrusions...limestone and quartzite dominant Yanacocha Volcanic Field (YVF) Jurassic andesitic volcanic rocks and Devonian |  | | Journal (article/letter/editorial) | | with gabbrodiorite to diorite magmas from which the ore ļ¬uid may have been channelled by major ductile to...composite IOCG deposits originated by ingress of the ore ļ¬uid to relatively permeable volcano-sedimentary...witnessed by the ore-related diorite dykes, but in either case the origin of the ore ļ¬uid at greater,...may have fortuitously contaminated the magmatic ore ļ¬uid locally. The proposed linkage of central Andean...proposed as viable ore-forming ļ¬uids. In view of the fact that the central Andean IOCG province is the worldās |  | | Report (issue) | | UK Nirex Mineral Reconnaissance Programme Buried ore deposits Gold mineralisation Sea-bed gamma spectrometry...along strike of those containing the Cononish gold mine near Tyndrum, Argy11. A new format based on coloured...environmental engineering of waste sites, prospective-ore studies, the measurement of salt water intrusion/...and field studies, which together are placing the BGS in a leading role in this important field. Related...old landfill sites, the development of abanĀ doned mine workings or the impact of rising sea levels. It |
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