 | | 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 |  | | 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...terminated c.500 ka later with the extrusion of quartz latite lavas at 32.2 Ma. The final stage of volcanism...alteration at low stratigraphic levels. However, field relations combined with a plateau age of 32.1 Ā± |  | | 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...Cacoxenite on quartz, collected from Chala Gold Mine, Spahievo Orefield, Bulgaria. Field of view is less |  | | 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 |  | 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) | | recognise the main style of primary gold as being quartz-vein hosted. This style occurs principally in quartzite...combined or included in sulphides. These gold-bearing quartz veins would proceed from hydrothermal solutions...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 |  | 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 (article/letter/editorial) | | 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...(cervelleite) Paragenetic position Reference in quartz veins with galena, chalcopyrite, sphalerite, pyrite...Dobrev et al. (2002) Cook and Ciobanu (2003) Gold-quartz vein deposit Funan, China anhedral grains 5ā60...(TL) of cervelleite, Ag4TeS, is also the Bambolla Mine (Criddle et al., 1989). Before acceptance of the |  | | Journal (article/letter/editorial) | | during a study of ore minerals collected from the spoil tips of the abandoned Bambolla mine, Moctezuma, Sonora...cervelleite-like minerals, has been reported from various ore types including the intrusionhosted San Martin deposit...et al. 2004), the Eniovche epithermal deposit, Bulgaria (Dobrev et al. 2002), the intrusion-hosted Funan...Evia Island, Greece), goldbearing quartz veins contain an exotic ore mineralogy including cervelleite-like...specimen was collected by the late Alan Criddle on a field excursion to the Sonora Desert led by the late Sid |  | | 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...basement rocks. Vein-disseminated sulfideā(pyrite)āquartz ores build up deposit-like bodies in beresites...Spokoininsky cluster; the Aldan-Stanovoy gold province; the Aldan shield Citation: Kondratieva, L.A |  | | 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) | | Proterozoic, consisting of a unifOrm sequence of quartz-muscovite, actinolite, chlorite, and other schists...5000 to 6000 Sandstones, sandy shales, phyllites, quartz-porphyry, orthophyre, and limestone Unconformity...quartzmica, graphite-quartz-mica, epidote-actinolite, and quartzites 500 to 800 Chala formation: quartzite-like...quartzite-like sandstones, schists of quartz-amphibole, amphibole and chlorite Unconformity Several thousands...lower part of the Dzhagda series consists of the Chala formation, the most complete section of which the |  | | 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 (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 |  | | Journal (article/letter/editorial) | | Geography of Southern Peru, Including Survey of the Province of Tarapaca, and Route to Chile by the Coast of...Ol)servatioxlson tAteGeogral)hy Su7vey of t/le Province of Tarapaca, and Route to Chile by the F.B.G.S...and cold at night.' The physicalfeaturesof this province,whichwill applygeIlerally to all the southernpart...in thfe pampafor the use of travellers. In this province,as well as in manyotherpartsof Perll, no one startson...12'47" S., 7(:)?14 lAT,is the principalportof the province,shelteredby an island (which was formerly thickly |  | 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) | | and cadmian tetrahedrite occur in gold-bearing quartz veins in metapelites and faults within brecciated...Kallianou area (southern Evia Island, Greece). The quartz veins and faults are discordant to syn-metamorphic...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 |  | | Report (issue) | | . . . . . . . 17 Quartz, Slate, Flint, Obsidian, Crystalline Quartz, Rose Quartz, Opal, Onyx, Topaz...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 |  | | Journal (article/letter/editorial) | | Geologyof a Skarn-BrecciaOrebody at the Victoria Mine, Elko County, Nevada W. W. ATKINSON,JR., Departmentof...77210 Abstract The copperorebodyat the Victoria mine occursin a brecciapipe emplacedin Permian limestoneand...point brecciationceased.Finally, garnet,calcite,quartz, and sulfideore cemented the breccia.Copperis concentrated...whereasgarnetaltered to mixturesof hematite,calcite,quartz,and chlorite.The sequence is dividedinto (1) early...copper tonsof ore with a gradeof about2.42 percentCu, was found at the site of the Victoria mine. A small |  | | 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 |  | | Journal (issue) | | substantial investment to optimize production and extend mine life and maximize the value of the camp to the benefit...ā SSR Mining has three operations: the Marigold mine in Nevada; the Seabee gold operation in Saskatchewan...operations in Argentina, which consist of the Chinchillas mine and the Pirquitas property. It also has feasibility...America. Alacerās cornerstone asset is its Copler gold mine in Turkey, 1,100 km southeast of Istanbul and 550...GOLD From 1 on exploration, infrastructure and mine and process plant development, TMAC says. TMAC started |  | 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) | | are intrusion gold related to mineralization in quartz veins. Native gold occurs as micrometric grains...pyrite and in minor amounts in other sulfides and quartz. Electrum is found mainly in fractures of pyrite...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 |  | | Journal (article/letter/editorial) | | hydrothermal biotite and underlies zones of stage 4 and 5 quartz-alunite alternation that are 0.8 and 1.5 m.y. younger...deposits contain massive and vuggy quartz, quartz-alunite, and quartz-pyrophyllite alteration associated...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...characterized by alteration zones of vuggy residual quartz containing ore mineral assemblages with relatively high |  | | Book | | Kutais, Sukhum, the northern part of the Black Sea Province towards Tuapse, Ardahan and Olti districts, :...22,661,532 tons; manganese ore, 1,676,824 tons wool, (the bulk of this ore was exported from the port...exclusively devoted to the of export manganese ore. The industry of Georgia is very small at present...World Importance The Ore Deposits 2. Extraction 3. Dressing and Washing of the Ore Transport Its 4...only the outcrops are known. The total quantity of ore contained in them is estimated at about 13,000,000 |  | | Journal (article/letter/editorial) | | ..................... - .... ..... .. valuahle ore ot lcad. It probably contains .. little Eccentric........ ....... 210,912 210,969 21 0.886 Stamp, ore, S. Kendall......... ...... .............. Steam...Fence. J. A Tornwall .................. ........... Field roller and planter, Relcherts & Tipton .... . ....Tebay ................. 211.064 T. J.H.-They are quartz cry.tal.-sometimes used to' GraIn binder. J. S...Telegraph . line . 210.837 .. . . ..... ..... . . Chala . P ca.ter, year. Thi. include. po.tage, which we |  | | Journal (article/letter/editorial) | | ..................... - .... ..... .. valuahle ore ot lcad. It probably contains .. little Eccentric........ ....... 210,912 210,969 21 0.886 Stamp, ore, S. Kendall......... ...... .............. Steam...Fence. J. A Tornwall .................. ........... Field roller and planter, Relcherts & Tipton .... . ....Tebay ................. 211.064 T. J.H.-They are quartz cry.tal.-sometimes used to' GraIn binder. J. S...Telegraph . line . 210.837 .. . . ..... ..... . . Chala . P ca.ter, year. Thi. include. po.tage, which we |
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Chala mine, Spahievo ore field, Spahievo, Mineralni Bani Municipality, Haskovo Province, Bulgaria