 | Banno, Y., Miyawaki, R., Kogure, T., Matsubara, S., Kamiya, T., Yamada, S. (2005) Aspidolite, the Na analogue of phlogopite, from Kasuga-mura, Gifu Prefecture, central Japan: description and structural data. Mineralogical Magazine, 69 (6) 1047-1057 doi:10.1180/0026461056960307 | Journal (article/letter/editorial) | | calcite, scapolite, apatite, pyrrhotite and chalcopyrite. A representative chemical formula of aspidolite...®rst found in chlorite schists from Zillertal, Austria, was initially de®ned by von Kobell (1869) as a...Na-dominant analogue of phlogopite (Franz and Althaus, 1976). Schreyer et al. (1980) described the Na...representing zone 4) in the Kawai pit of the Kasuga mine, which had produced wollastonite and dolomite (Fig...calcite, scapolite, apatite, pyrrhotite and chalcopyrite with minor chlorite and pyrite. The phlogopitic |  | | Journal (article/letter/editorial) | | altered rocks have an average sulfide content of 0.8 weight per cent, compared to an average of 0.01 per...a captured iss-phase which later changed to chalcopyrite plus pyrrhotite or mackinawite. Inclusions are...major and trace elements have been carried out using an electron probe. Complete chemical analyses were obtained...scattered throughout the batholith. The Butte mining district occurs in the southern half of the batholith....throughout the batholith. Small amounts of pyrite, chalcopyrite, molybdenite, and tourmaline occur in miarolitic |  | | Book (volume) | | carbonate spars free from cobaltiferous ores, especially an 8-meter (25-ft.) vein at the diorite contact, worked...mica. The iron deposits of Dobschau still yield an annual production of about 35,000 tons, but the cobalt...' This Kupferschiefer is cases. lean in this district, carrying only 1.4% of copper, and no silver,...subordinate amount, it is true, together with chalcopyrite and tetrahedrite, were also found in the copper...copper district also contain occasional nickelite, together with chalcocite, bornite, chalcopyrite, pyrite |  | Amstutz, G. C., Goresy, A. El, Frenzel, G., Kluth, C., Moh, G., Wauschkuhn, A., Zimmermann, R.A. - Eds. (1982) Ore Genesis. Springer Berlin, Heidelberg. doi:10.1007/978-3-642-68344-2 | Book | | Zimmermann Mineralogisch-Petrographisches Institut der Universitat Heidelberg 1m Neuenheimer Feld 236, 6900...professional colleagues, friends, and students - owe an immense measure of gratitude to him for his guidance...of fast changing methods of publishing this is not an easy task, and we hope, together with the publisher...negatively affect the overall qUality. The selection of an appropriate title for a book of this type is not...that time (p. Ramdohr, Fortschritte auf dem Gebiet der Lagerstattenkunde, in Fortschr. d. Min., Krist., |  | | Journal (article/letter/editorial) | | alkaline character of the blueschist, which suggests an oceanic island or a transitional MORB type primary...Same mineral assemblages from tectonic blocks within an ophiolitic melange zone. The blueschists from Ladakh... overlies the blueschists discordantly and forms an important time marker. The conglomerate embits in...(Conglomerates of Liu Quiu, Academica Sinica, 1980) an Oligocene to lower Miocene age can be inferred for...suggest a deep marine environment within or near an active volcanic area as indicated by the occurence |  | | Journal (article/letter/editorial) | | which carry importantamountsof disseminated chalcopyrite. Molybdeniteoccursmainly in quartz or quartz...depositis in the south end of the T•fE Butte mining district is located in the Rocky Mountains in southwest...a large- grano-aplite. tonnage disseminated chalcopyrite-molyl)de•fite zone,,a• ' Largehigh-grade sulfide...Butte Quartz Monzonite Mode 37 + 4 Andesine • An = 44.3 4- 1.2, Ab = 53.0 4- 1.5, Or = 2.7 4- 0.7...Minor Zircon Or = 91.0 -• 0.9, Ab = 8.4 4. 0.9, An = 0.6 4. 0.3 Fe/(Fe 4. Mg) = 4.50 4. 0.5, TiO2 = |  | | Journal (article/letter/editorial) | | ABSTRACT The metamorphic sequence in the Nababeep district of Namaqualand is considered in terms of major...Rb-Sr whole-rock isochron age of 1213± 22 m.y., with an initial Sr^/Sr** ratio (RJ of 0-7191 ±00021 suggesting...terrain in the Cape Province of South Africa are: (a) an important suite of metamorphosed sedimentary and...2,640 m.y. (Nicolaysen & Burger, 1965; Leube in Martin, 1965, p. 55). In addition, along the Orange River...with an isotopic and petrogenetic study of the Nababeep district of Namaqualand (see Fig. 1), in an effort |  | Seidel, Eberhard, Okrusch, Martin, Kreuzer, Hans, Raschka, Helmut, Harre, Wilhelm (1976) Eo-Alpine Metamorphism in the Uppermost Unit of the Cretan Nappe System — Petrology and Geochronology. Contributions to Mineralogy and Petrology, 57 (3) 259-275 doi:10.1007/bf03542937 | Journal (article/letter/editorial) | | Area (Asteroitsia Mountains) Eberhard Seidel and Martin Okrusch Technische Universitat Braunschweig, M...assemblage brown hornblende + diopside + plagioclase (An 50) while associated metapelitic gneisses consist...sillimanite (andalusite) ± K-feldspar + plagioclase (An 40-50) + quartz. Judging from relevant experimental...serpentinite-amphibolite association can be divided into an upper part composed of serpentinite bodies of different...included in each of the others. This points clearly to an equilibrium assemblage plagioclase - brown hornblende |  | | Journal (article/letter/editorial) | | lower than 3 in any case). 2. Late fluids, related to an important kaolinization. They are generally colder...cassit4rite, mispickel, molybddnite rare, pyrite et chalcopyrite tardives. La kaolinite n'est prdsente que dans...exploitation en carri~re, ou ~ proximite de l'ancienne mine du Bd. Ceux de la Villeder ont dte prelev~s en place...quartz IX • cassiterlte o~ 0htani Mine oA Takatori Mine IX IX 0 O 0 0 0 0 0 ~o oo oO o...implique une temp4rature inf~rieure 350--400 °C (ALTHAUS 1966). 1000 l'association 6troite kaolinite-tourmaline |  | | Journal (article/letter/editorial) | | (Miocene) RC NE JAP AN A Eurasia Plate I.S.T.L. Central Shikoku er Inn W fS eo z on AN JAP 50 Shimo-doya...Shimo-doya C AR 424 an W ter 378 Kanto Mountains fS eo Ou Pacific Plate T.T.L. an Jap SW Ushibuse...minerals have been identified as ilmenite, pyrite, chalcopyrite, sphalerite, galena, carbonaceous materials...GEOLOGICAL SIGNIFICANCE The mineral assemblage Pg + Czo is an index of HP metamorphism (Turner, 1980) and has been...(Heinrich and Althaus, 1988). A. Miyashita 74 P(GPa) 2.0 Lws +Jd Pg+ Zo+ Qz Heinrich & Althaus (1988) |  | | Journal (article/letter/editorial) | | iron content. M. Okrusch, Mineralogisches lnstitut der Uni~ersitiit Wiirzburg, Plew~,ertor strasse 34, 87...apparently mutually inconsistent (Weill 1966, Althaus 1967, Pugin & Khitarov 1968, Holdaway 1968, R;chardson... . . . spinel Pyrite . Pyrrotite - Chalcopyrite - Graphite . * mineral present, tr tr...carried out on carbon-coated thin sections, using an Applied Research Laboratories EMX microprobe. Three...coexistent AI,SiOs polymorphs. Am. your. Sci. (3), 267, 310-6. Althaus, E. 1967: The triple point and |  | | Journal (article/letter/editorial) | | evidence bearing on rearrangement of material within an ore body without concomitant change in the overall...at Yale University where he is currently studying an ore deposit in a high-grade terrane as part of his...convincing example is recorded for the Elizabeth Mine in Vermont (McKinstry and Mikkola, 1954; Howard...ore in this case is a stratiform pyrrhotite-chalcopyrite-pyrite body which is enclosed within isoclinally...provided by Pedersen (1980) for the Black Angel Mine in western Greenland. Here, a stratabound massive |  | | Journal (article/letter/editorial) | | the permeability owing to fluid–rock reaction. Such an interaction is represented by a set of reactions...3Al2Si4O10 (OH)2 + 2K+. A decrease in temperature and an increase in silica activity led to replacement of...and (b) a mafic–ultramafic complex interpreted as an ophiolite (Leblanc 1975, Braders 1988). These rock...deposit. The surface samples were powdered using an agate crusher at the sample preparation laboratory...distal zone, are brown in color, bipyramidal, with an adamantine luster and closely associated with fibrous |  | | Journal (article/letter/editorial) | | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and...Ermioni VMS (Figure 1) is a perfect example of such an investigation, as despite its small size and simple...Peninsula (Figure (Figure 1) geology andand The 1) is is an anarea areacharacterized characterizedbybycomplex...(d) the “Iliokastron Mélange Unit” consisting of an ophiolite mélange, and (e) the uppermost “Faniskos...the Ermioni VMS, focusing on the most important mine sites, Karakasi and Roro (Figure 1B,C). Their results |  | | Journal (article/letter/editorial) | | phase relations and genesis of these rocks are still an unsolved problem in metamorphic petrology. The most...assemblages, by Fe-Mg metasomafism brought about by an aqueous fluiid essentially rich in De, Mg, Na, F...etc., with simultaneous removal of K, C~Land Si. An attempt is made in this paper to discuss the genesis...paragenetic sequence, are pyrite, pyrrhotite and chalcopyrite (Roy Chowdhary & Das Gupta 1965a & b). These...of the analysed underground samples of the Copper Mine (projected on the surface). Samples 12, 13, 15, |  | | Journal (article/letter/editorial) | | occurs in dry weather on the waste piles of a coal mine in the LvovVolynsk basin, identical with the synthetic...1973. Dokl. akad. nauk. SSSR, 213, 688 (AAaaaHriT). An abundant mineral in ores of the Kakhetin deposit...592 , 7 1"598 [[ [ooI]. Named for Professor, E. Althaus. [M.A. 76-3673.] 9 Copyright the Mineralogical...space group Ccca, a 13.oo, b 20-24, c 5-16/~, from an unnamed locality in China. Named from the composition...magnesium analogue of vivianite occurs in fractures in an ironstone formation in the region of Big Fish River |  | | Report (issue) | | wolfeite, topaz, muscovite, sphalerite, quartz, chalcopyrite, pyrrhotite, siderite, arsenopyrite, chlorite...deposit, Portugal. Name: To honor Professor Egon Althaus (1933– ), Karlsruhe University, Karlsruhe, Germany |  | | Journal (article/letter/editorial) | | of the Na±Ca±K content of the ¯uids with that of an evolved evaporitic brine enables the recognition...deposits in central and western Europe. Although an evaporitic origin could clearly be invoked for the...Mechernich Pb±Zn deposits in the nearby Eifel gives an age of 170 4 Ma (Schneider et al. 1999). From the...in the deeper subsurface. To dierentiate between an evaporative or evaporite-dissolution origin of the... 1999). The total production of the zinc-lead district in eastern Belgium is some 1.1 Mt of zinc and |  | Havelcová, Martina, Machovič, Vladimír, René, Miloš, Sýkorová, Ivana, Lapčák, Ladislav, Špaldoňová, Alexandra (2020) Geochemistry of shear zone-hosted uranium mineralisation at the Zadní Chodov uranium deposit (Bohemian Massif) Ore Geology Reviews, 120. 103428 doi:10.1016/j.oregeorev.2020.103428 | Journal (article/letter/editorial) | | particles was not affected by uranium minerals, which is an interesting difference from changes that minerals...Bohemian Massif the most important uranium ore district in the European Variscan belt. The most important...with NW-SE trending fault structures, which form an NW continuation of the Central fault. The Zadní Chodov...uranium deposit in the Bohemian Massif. The total mine production of low-grade uranium ore (0.195 wt% U)...tectonic block of the Bor pluton, was investigated by mine workings to a depth of 1250 m over a strike length |  | | Book | | or the irregular bounding surface of an embedded grain or of an aggregate, or any mineral change that... as evidenced by the undistorted preservation of an original texture or structure, whether this be the...publishing his monumental four volumes Handbuch der Mineralogie (Hoffmann, 1811e1817). Hoffmann was a...Freiberg. In 1815, he published Über die Aechtheit der Kristalle (Concerning the genuineness of crystals)...George Amadeus Carl Friedrich Naumann (1797e1873), an important pioneer European mineralogist and crystallographer |  | | Journal (article/letter/editorial) | | about 260 °C, offering an unique opportunity to study natural pyrrhotite. An integrative approach using...Pyrrhotite (Fe1–xS) is a common iron-sulfide mineral and an important constituent of ore deposits. The ferrimagnetic...region is also within the Erbendorf magnetic anomaly, an intensively studied region with a magnetic field...work). Electron microprobe Analyses were made with an ARL-SEMQ electron-microprobe at the Institute of...SX51 at the Mineralogical Institute in Heidelberg. An accelerating voltage of 25 kV and a sample current |  | | Journal (article/letter/editorial) | | by Lake Buchanan in 1938. The Terlingua mining district is noted for its rare mercury minerals. Mining...from 1900 to the middle 1940s; but the Mariposa mine, which produced most of the rare minerals, ceased...wrote for Rocks & Minerals on "The Weeks Pegmatite Mine, Wakefield, Carroll County, New Hampshire" (March/April...(Zeitner, 1972). Rendham, E and N of Rendham along an escarpment, limestone over red shales of the Permian...salt dome, open-pit quarry on N W side, originally an Indian stronghold. Sam Damon opened a small quarry |  | Hirschmann, G., Duyster, J., Harms, U., Kontny, A., Lapp, M., de Wall, H., Zulauf, G. (1997) The KTB superdeep borehole: petrography and structure of a 9-km-deep crustal section. Geologische Rundschau, 86. doi:10.1007/pl00014663 | Journal (article/letter/editorial) | | ##0511 643 3664 J. Duyster Institut für Geologie der Universität Bochum, Universitätsstr. 150, NA-Süd...A. Kontny Geologisch-Paläontologisches Institut der Universität Heidelberg, Im Neuenheimer Feld 234... de Wall Geologisch-Paläontologisches Institut der Universität Heidelberg, Im Neuenheimer Feld 234...G. Zulauf Geologisch-Paläontologisches Institut der Universität Frankfurt a.M., Senckenberganlage 32—34...trend NW—SE. Semibrittle to brittle deformation plays an unexpected important role. In contrast to the conditions |  | | Journal (volume) | | pressures appear to be very similar i.e. 5 - 7 kb. An exceptionallow model press ure of 1- 2 kb was shown...zones in Finland. Of the 15 occurrences studied. an but one (Ylöjärvi) are of the massive strata-bound...from southeastern Finland to Lapland and constitute an epicontinental-miogeosynclinal facies series. The...(Piirainen et al. 1974): The Kemi chromite ore in an ultramafic layer in the western end of the intrusion...includes the Vihanti ore zone, the Outokumpu ore district and the Kotalahti nickel-copper ore zone in this |  | | Journal (article/letter/editorial) | | was induced during prograde metamorphism to cancel an established zonation in water pressure or water content...formed by resolution of material like the first or by an injection from without, the author proposes the name...peak-metamorphic minerals (pyroxene, garnet ) carrying an internal foliation pattern (Sj) defined by hornblende...e melting curve at P i n e = 1.25 kbar (after Althaus, 1968 ); 2 = h o r n b l e n d e breakdown curve...1968 ); 2 ' = ibid., at PH:O = 1.25 kbar (after Althaus, 1968 ); 3 = h o r n b l e n d e b r e a k d o |
|
