 | | Journal (article/letter/editorial) | | Technology, H6gskoleringen 6, N-7034 Trondheim-NTH, Norway AND J. R. CRAIG Virginia Polytechnic Institute...in which fractures in cataclastically-deformed pyrite porphyroblasts are filled with matrix sulphides;...sulphides. The small Z n - C u sulphide body at Gressli, in the central Norwegian Caledonides, shows these...relations to the cataclastically deformed metablastic pyrite, along fracture walls and grain boundaries. They...the opened-up triple junctions of foam-textured pyrite. In addition, parts of the ore show patchy quartz |  | | Journal (article/letter/editorial) | | ARTICLE J. R. Craig á F. M. Vokes á T. N. Solberg Pyrite: physical and chemical textures Received: 19 March...March 1997 / Accepted: 14 May 1998 Abstract Pyrite may crystallize initially in forms as diverse as...formation of cubes. Once these have formed, the pyrite becomes much more refractory and retains many characteristics...state or chemical remobilization, and annealing. Pyrite deforms sparingly until there is brittle failure;...failure; however, there may be signi®cant pyrite corrosion and regrowth during metamorphism as the result |  | | Journal (article/letter/editorial) | | chalcopyrite and quartz in the small Gressli deposit in central Norway during Caledonian amphibolite-facies...Cu-(Zn) pyritic deposits at Sulitjelma in northern Norway (Cook et al., 1990, 1993) are already well known...it closed in the summer of 1991. This area of the mine was known for copper contents higher than in other...Giken II and Sagmo deposit, Sulitjelma district, Norway. The deposits are shown projected to the surface...sulphide petrography at Sulitjelma has shown that pyrite exhibits evidence of deformation in both the brittle |  | | Journal (article/letter/editorial) | | metamorphism of pyrite and pyritic ore. The resultant paper emphasises how the refractory nature of pyrite and its...the effects of the metamorphic sulphur budget on pyrite: pyrrhotite ratios during a heating and cooling...cataclastically deformed pyrite metablasts from the Gressli deposit, Norway. In their paper, carefully...preferred orientation of experimentally deformed pyrite (2430% shortening) using the neutron diffraction...composition on the deformation mechanisms are in pyrite at mid-greenschist facies conditions. N. J. Cook |  | | Journal (article/letter/editorial) | | Strata-Bound SulfideDeposits in the Caledonidesof Norway A. BJOBLYKKE, Instituttfor Geologi,Universitetet...Universitetet i Oslo,P.O.Box1047,Blindern,N-0516Oslo$, Norway F. M. Voiogs, Instituttfor GeologiogBergteknikk,...Trondheim, NorgesTekniske Hogskole, Trondheim, Norway A. BIBKELAND, Instituttfor Geologi,Universitetet...Universitetet i Oslo,P.O. Box1047,Blindern,N-0316Oslo3, Norway AND R. I. THORPE GeologicalSurueyof Canada,601 BoothStreet... Althoughnotruledoutby the leadisotopedatafrom Norway,thesedatagivenoreasonfor invokingderivationof continental |  | | Journal (article/letter/editorial) | | 538;--, deformed polycrystalline pyrite ores from, 2 9 ; - - , Woods Mine, namansilite occurrences from...from Norway, 19 768 A L P H A B E T I C A L INDEX CANADA,Yukon, deformation textures in pyrite from...crystal growth rates, 337 Cosalite, from Dunjeon gold mine, Korea, 515 Cotectic, textures in a St, REE-rich... 495 Cox, S.F., 29 CRAIG,J.R., metamorphism of pyrite, 3;--, 19 CRESSEY,B.A., five-fold symmetry in chrysotile...massive sulphides, 67 Deformation textures, in pyrite, 55 DELLAVENTURA,G., 315 Dendrites, Bi-Ni-Co quartz |  | | Journal (article/letter/editorial) | | metamorphism of massive sulphides at Sulitjelma, Norway NIGEL J. COOK Mineralogisches Institut der Universit~it...Ordovician age at Sulitjelma in Nordland County, Norway, form one of the important fields of sulphide mineralisation...variety of textures have been formed within the pyrite-pyrrhotite-chalcopyritesphalerite sulphide rocks...retrograde greenschist conditions. Grain growth of pyrite in matrices of more ductile sulphides during the...well-known. In some zones of high resolved shear stress, pyrite shows ductile behaviour which could be explained |  | Morey, A. A., Tomkins, A. G., Bierlein, F. P., Weinberg, R. F., Davidson, G. J. (2008) Bimodal Distribution of Gold in Pyrite and Arsenopyrite: Examples from the Archean Boorara and Bardoc Shear Systems, Yilgarn Craton, Western Australia. Economic Geology, 103 (3) 599-614 doi:10.2113/gsecongeo.103.3.599 | Journal (article/letter/editorial) | | 103, pp. 599–614 Bimodal Distribution of Gold in Pyrite and Arsenopyrite: Examples from the Archean Boorara...geochemistry, and hydrothermal evolution of gold-bearing pyrite and arsenopyrite from six orogenic gold deposits...located along fractures and grain boundaries in the pyrite and arsenopyrite. These observations suggest that...associated with hydrothermal alteration of preexisting pyrite and arsenopyrite. Textural observations and LA-ICPMS...invisible gold was remobilized from early-formed pyrite and arsenopyrite to form visible gold during development |  | | Journal (article/letter/editorial) | | melting of pre-metamorphic pyrite during peak metamorphism. Some euhedral pyrite in the LOB may similarly...sulphide ore textures and features from the Broken Hill Mine at Aggeneys (hereafter simply Aggeneys), (3) discuss...Australia. The biggest producer is the Broken Hill Mine, host to 38 Mt of ore with 7.8% Pb, 2.9% Zn, 0.5%...bodies, rather than “reduced rock types” (e.g. pyrite-bearing rocks), (6) high Mn-Ca-Fe contents are...dominant with subordinate pyrrhotite and minor pyrite and associated variable amounts of magnetite, (10) |  | | Journal (article/letter/editorial) | | by copper sulphides with abundant arsenopyrite, pyrite and accessory galena and sphalerite. New field...deformation in quartz, cataclasis of arsenopyrite and pyrite, fracturing and/or buckling of bladed hematite...quartz crystal boundaries, and invade brecciated pyrite. Previous K–Ar Early Devonian age determinations...al. 1997). This paper considers the chalcopyrite–pyrite– arsenopyrite suite of Stanley & Vaughan (1982a)...digenite, djurleite and bornite are found locally. Pyrite and arsenopyrite are usually abundant, accompanied |  | | Journal (article/letter/editorial) | | Trondheim-Norwegian Institute of Technology, 7034 Trondheim, Norway (Received April 2, 1991; accepted after revision...many of these deposits served as major sources of pyrite which was burned to produce sulfuric acid; the...recovery method rapidly reduced the demand for pyrite and resulted in closure of many of the mines. In...a number of deposits in USA, Canada, Sweden and Norway, a number which has been steadily declining in...significant production of copper, zinc, lead and pyrite concentrates from the mines still in pro- © 1992 |  | | Book | | tourmaline, Topaz and quartz (the quartz continuing). 2. Pyrite, arsenopyrite, gold. 3. Pyrrhotite, chalcopyrite...sphalerite, galena, tetrahedrite, fine-grained pyrite and marcasite (both derived from the breakdown...Pyrrhotite, pentlandite, löllingite, arsenopyrite, pyrite, cobalt and nickel arsenides. 4. Chalcopyrite,...the following: "In these ores arsenopyrite and pyrite were the earliest sulfides to be formed. Pyrrhotite...ferromagnesian minerals in the country rock to form pyrite. A progressive decline of the ratio of sulfur to |
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