 | | Journal (article/letter/editorial) | | specimens. hedra, reminiscent of aggregates of marcasite crystals. Also rare were ball-shaped aggregates...can be distinguished, they often appear to be marcasite, although pyrite may also be present. Malachite...September 8 Manganoan Calcite Erma Reka Zlatograd Smolyan Oblast Bulgaria Measurements: 11.81 x 9.45 x |  | 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) | | 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 Pb–Zn–Ag...Rhodopes to strongly fractionated shoshonitic (Bulgaria) to calc-alkaline and high-K calc-alkaline (Greece)...fault; Magmatism; Ada Tepe; Madan; Rhodope Massif; Bulgaria; Greece 1. Introduction For half a century, hydrothermal |  | | Journal (issue) | | 433 by B. Smith Minerals of the Madan Orefield, Bulgaria .....................................439 by S...introduction to the mineralogy of Ontario’s Grenville province. Mineralogical Record, 13, 71-86. RUSSELL, A....Natural History Boulevard Ruski, No. 1 Sofia 1000, Bulgaria During thelast few years, many fine specimens...later the Soviet Union transferred its share to Bulgaria. Intensive geological surveys were conducted throughout...Madan orebodies. At present there are companies in Bulgaria which have begun dealing in mineral specimens |  | | Journal (issue) | | Sao Paulo, SP, BRASIL. E-mail, datencio@usp.br Bulgaria: Prof. Ivan Kostov, National Natural History Museum...Sciences, Boulv. Tsar Osvoloditel 1000, Sofia, BULGARIA. E-mail: rikostov@staff.mgu.bg Canada: Mr. A....of fine-grained sulfides, chiefly pyrite and marcasite. Gold is microscopic, as is typical of all Carlin...szmolnokite. Pyrite and Marcasite FeS2 Two of the polymorphs of iron sulfide, pyrite and marcasite, are also relatively... 4 cm, from the Sedeftche mine, Momtchilgrad, Bulgaria. Keith Williams specimen; Jeff Scovil photo. Figure |  | | Journal (issue) | | crystal cluster, 7.3 cm, from near Bapu, Guangdong Province, China. Rob Lavinsky specimen, now in the Tom...his thesis on the minerals of the Hesse-Nassau Province in Germany. During the next two years Ahlfeld...the José Lippeheide mining company in the Basque province between 1953 and 1954. He published his monograph...Survey, GEOBOL. In 1963 he mapped the Ayopaya province for the German Mission at the age of 71, quite...being from Cerro Sapo in the Ayopaya alkaline province, a deposit which he himself had discovered. He |
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