 | | Journal (article/letter/editorial) | | 1965), Norway (Krause,1965),India (Rao, 1965),Austria (Tufar, 1967),Fiji (Frenzeland Ottemann,1967),...conglomeratic structure and high porosity, but in the lower part the ore is hard and compact and has low porosity...mineral assemblageis more complex and includes covellite, digenite, blaubleibendercovellite, chalcocite...a i t e ( i d ) , i n t u r n r i m m e d by covellite (cv). Reflected plane polarized light S c a l...The outer part of the idaite rim is altered to covellite At point indicated by black arrow near center |  | | Journal (article/letter/editorial) | | PRODUCTS OF SUPERGENE OXIDATION, COPIAPo MINING DISTRICT, NORTHERN CHILE R. H. Snr.rroE, Deportnlentof...ABSTRACT In numerous deposits of the Copiap6 mining district of northern Chile copper and copper-iron sulfides...normal covellite; hyrogene bornite to "anomalous bornite", idaite, chalcopyrite, and normal covellite; supergene...blaubleibender and normal covellite; and supergene digenite to blaubleibender and normal covellite. Electron probe...probe microanalysis of blaubleibender covellite revealed a wide compositional range, probabll' extending |  | Large, D. J., MacQuaker, J., Vaughan, D. J., Sawlowicz, Z., Gize, A. P. (1995) Evidence for low-temperature alteration of sulfides in the Kupferschiefer copper deposits of southwestern Poland. Economic Geology, 90 (8) 2143-2155 doi:10.2113/gsecongeo.90.8.2143 | Journal (article/letter/editorial) | | indicate progressive alteration fromchalcocite to covellite in the sequence chalcocite-djurleite-anilite...-geerite-spionkopite-yarrowite-covellite. Bornitc compositions plotonthe Cu-Fe-Sphasediagramalonga line...texturally appearto havepartiallydecomposed to covellite andchalcopyrite. Bothofthesemineralogical tre... themostcopper-depleted minerals, yarrowitc, covellite, copper-poor bornitc, andchalcopyrite occurin...mine are characteristic of the shallower water Lower (Oszezepalski, 1989).Here, the basal et al.,1993) |  | 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 | | Alteration and Mineralization in the Tri-State District of Missouri, Kansas, and Oklahoma, U.S.A. R.D...the Myrthengraben Gypsum Deposit, Semmering, Lower Austria W. Tufar (With 13 Figures) . . . . . . . . ...Emphasis on the Bavarian Pfahl of the Altrandsberg District) H.-W. Biiltemann and R. Hofmann (With 9 Figures)...Hydrothermal Ore Formation, Ticapampa-Aija Mining District, Cordillera Negra, Department of Ancash, Peru...sulphides was observed in the grey sandstone of Lower Permian, SW Poland. The process is connected with |  | | Book | | heldatBled/Yugoslavia 3-7, 1977, held at Leoben/ Austria 5-10,1981, held at Berchtesgaden/Bavaria, FRG ...Mostler The Succession of Ore Mineralization of the Lower Austroalpine Innsbruck Quartzphyllite (With 2 Figures)...Mineralisation of the "Paleozoic of Graz" (Styria, Austria) (With 3 Figures). . . . . . . . . . . . . . ....Pennian and Scythian Series of the Eastern Alps, Austria, and Its Petrogenetic Significance (With 1 Figure)...there were four independent states in this area: Austria and Bavaria and the small church states of Salzburg |  | | Book | | Chapter 1 Introductory Concepts Chapter 4 Mantle and Lower Crust Derivatives Chapter 5 Replacement Patterns...hydrothermal veins. (ii) The granite intrusion mobilized lower crustmantle material due either to deep seated granitization...shales, hornfels and granites of the Harzburg district, showed that the amount of boron decreases from...segregation also takes place under considerably lower temperature conditions. Augustithis has described...result of lateral leaching and mobilization by lower temperature conditions of elements from basalts |  | | Book (volume) | | however, was to detern1ine which papers were of a lower order of merit than the others. This developed into...Werner, Ore Mineralization from the Eastern Alps, Austria, as Strata-Bound-Syn genetic Formations of Pre-Alpine...Mineralization: an Example from the Iwami Mining District, Shimane, Japan ..... ............... ..........more readily oxidized than is :i2 5, and (3) the lower the temperature at which a reaction involving these...surface, undergoes reactions that will raise (or even lower) its o a •s. Since the 8:14 5 of sea water appears |
|
