 | | Journal (article/letter/editorial) | | epidote, hornblende, diopsite, 427 Cheesewring quarry, Linkinhorne, danburite, 171; durangite, I72 Chycornish...Crowns Rock, St. Just, Land's End, garnet, 427 Dean quarry, The Lizard, djurle'ite, I72; analcime, adularia...penwithite (= neotocite), 279 and M26 Devon Meldon quarry, Okehampton, greenovite, 172; priceite, 175 Ramsley...Cannington Park quarry, djurlei'te, I72 Combe Farm quarry, Henbury, wulfenite, 298 Merehead quarry, Shepton...8I Y Garn, Pembrokeshire, pumpellyite, 8~ SCOTLAND An Gearna, Ben More, Isle of Mull, corundophilite, 171 |  | | Journal (article/letter/editorial) | | Amphibolites, Grand Canyon, Arizona, I99 and M23 An Gearna, Ben More, Isle oj'Mull, corundophilite, 171...geochemistry of loveringite, 187 Cannington Park quarry, Somerset, djurleite, 172; durangite, 172; milarite... see EGGLETON (R. A.), 361 and M37 Cheesewring quarry, Linkinhorne, Cornwall, danburite, I7I Chernovite...iron-bearing melts, Pt-Fe alloys for, 271 Coombe Farm quarry, Henbury, Somerset, wulfenite, 298 Coon Creek,...GUPTA (D. R.), the Dhajala meteorite, 493 Dean quarry, The Lizard, Cornwall, djurlei'te, 172; analcime |  | | Journal (article/letter/editorial) | | Disseminated nickel-iron sulfides in Archean serpentinite at Black Swan consist of the relatively uncommon...-magnetite-"violarite",with the previously unrecordedassemblagepyrite-vaesite-"violarite"occurring in...serpentinizationand carbonation of a dunite body during an essentially static, upper greenschistto lower amphibolitefacies...of nickel in the mineralizedserpentinite. During an early-stageserpentinizationiron-poor lizardite with...serpentiniteand with disseminated"violarite" in near-barren serpentinite. Progressive release of silicate |  | | Journal (article/letter/editorial) | | 1016/j.oregeorev.2017.10.005 This is a PDF file of an unedited manuscript that has been accepted for publication...and carbonated ultramafic rocks (carbonated serpentinite, talcâcarbonate rocks, and listwaenite). Serpentineâ...magnetite, and magnesiteâ talcâ quartzâ pyriteâ violariteâ milleriteâ chalcopyrite assemblage formed in...in carbonated ultramafic rocks. Compared with serpentinite, Ni, Co, Cu, Mn, and Pb concentrate in talcâcarbonate...magnetite decrease with progressive carbonation of serpentinite suggests that Ni from magnetite concentrated |  | | Journal (article/letter/editorial) | | The Ishkinino deposit is located in the Gai ore district, one of the most productive in terms of Cu and...northwest of the latter in the BaimakâBuribai district. The evolution of geological complexes of the...metabasic rocks, microquartzite, metagraywacke, and serpentinite sheets. These rocks host sulfide lenses (the...composition. The axial zone of the MUFZ is filled with serpentinite melange, with blocks of OrdovicianâSilurian...GEOLOGY OF THE DEPOSIT The deposit is related to an antiform that consists of three tectonic sheets (Figs |  | | Journal (article/letter/editorial) | | occur in a small body of listvenite, an extensively altered serpentinite, in Lower Palaeozoic paragneisses...pyrrhotite, pentlandite, millerite, polydymite, violarite, siegenite, gersdorffite, cobaltite, chalcopyrite...represents a good example of multistage transformation of an ultrabasic protolith, reflecting variable alteration...Zone of the Veporic Superunit (Fig. 1). It features an allochthonous lithological sequence of Palaeozoic...pyrrhotite, gersdorffite, cobaltite, polydymite, violarite, siegenite, pentlandite, chalcopyrite, and galena |  | | Journal (article/letter/editorial) | | awaruite, heazlewoodite, pentlanditc,millerite, and violarite but few, if any, iron sulfides. Using the Dumont...Dumont ultramaficbody in northern Quebecas an example, it is demonstratedthat certain assemblagesof the...namely, serpentinizationand talc-carbonatealteration. An analysis of nickeliferousopaquemineral assemblageson...compatabilities at high S: Ni ratios to includeiron sulfides. An important consequence of the model is that serpentinization...two objectivesin mind. The first objective tents in an attempt to explain the marked contrast was to clarify |  | Zhang, Huichao, Chai, Peng, Zhang, Hongrui, Hou, Zengqian, Chen, Shouming, Sun, Yanbin, Peng, Qing (2019) TwoâStage Sulfide Mineral Assemblages in the Mineralized Ultramafic Rocks of the Laowangzhai Gold Deposit (Yunnan, SW China): Implications for Metallogenic Evolution. Resource Geology, 69 (3) 270-286 doi:10.1111/rge.12201 | Journal (article/letter/editorial) | | stages: pyrite-vaesite-native gold and gersdorffite-violarite stages. The contents of As and Sb increased during...volcano-sedimentary rocks (Cave et al., 2017; Zhang & Zhu, 2017; An & Zhu, 2018), the most common gold-bearing sulfides...of gold mineralization in the ultramafic rocks. As an important part of the Sanjiang Tethyan metallogenic...minerals, including gersdorffite, vaesite, and violarite. Although the geological setting, characteristics...gold deposit has a gold reserve of nearly 22 t, with an average grade of 5.29 g tâ1, and the Donggualin gold |  | | Book (edition) | | groups: The number of new mineral species may grow as an avalanche, flooding the mineral population with tens...lepidolite, wolfrarnite). In many cases, minerals have an intermediate composition between theoretical end-members...to crystallographic tenns (e .g. prismatine), to an organization (e.g .. mgriite). to a journal (minrecordite)...form. Many minerals display characteristic twinning, an intergrowth of two or more individual crystals of...Miller indices are used. For instance, the symbol for an orthorhombic dipyramid form is { 111}, for a hexagonal |  | GonzĂĄlez-JimĂ©nez, JosĂ© M., Barra, Fernando, Garrido, Leonardo N.F., Reich, Martin, Satsukawa, Takako, Romero, Rurik, Salazar, Eduardo, ColĂĄs, Vanessa, Orellana, Felipe, Rabbia, Osvaldo, Plissart, GaĂ«lle, Morata, Diego (2016) A secondary precious and base metal mineralization in chromitites linked to the development of a Paleozoic accretionary complex in Central Chile. Ore Geology Reviews, 78. 14-40 doi:10.1016/j.oregeorev.2016.02.017 | Journal (article/letter/editorial) | | March 2016 Keywords: Precious metals Chromite Serpentinite Metamorphism Accretionary complex a b s t r...pods and veins of massive chromitite hosted in serpentinite-ïŹlled shear zones. Crystallographic orientation...chromitites: (1) Type A chromite, characterized by an average misorientation per grain of â€2° and chemically...sulphides [millerite (NiS), polydymite (Ni3S4), violarite (FeNi2S4), galena (PbS), sphalerite (ZnS), chalcocite...PaciïŹc coast of Chile (Fig. 1a). It is interpreted as an accretionary complex developed at the southwestern |  | | Journal (article/letter/editorial) | | thiospinel from the Kalgoorlie district, Western Australia DURING an examination of sulphide-mineralized...greenschist-level metamorphic rocks in the Kalgoorlie district, Western Australia, the writer noted the presence...grains, 20-I00 /~m in size, in a talc-carbonated serpentinite in the area of the Scotia mine to the north...thiospinel (M3S4) minerals from the Kalgoorlie district Co S Ni Fe Co Z Type K[42 K[36 K[27 Ni...from the Kalgoorlie district. FIG. 2 (right). Compositions of cobaltian violarite in relation to other |  | Auclair, Marie, Gauthier, Michel, Trottier, Jacques, Jebrak, Michel, Chartrand, Francis (1993) Mineralogy, geochemistry, and paragenesis of the Eastern Metals serpentinite-associated Ni-Cu-Zn deposit, Quebec Appalachians. Economic Geology, 88 (1) 123-138 doi:10.2113/gsecongeo.88.1.123 | Journal (article/letter/editorial) | | Geochemistry, andParagenesis of the EasternMetals Serpentinite-Associated Ni-Cu-Zn Deposit,QuebecAppalachians...twomainphases: earlyalterationandmineralization in serpentinite;andlate main-stage Cu-Ni mineralization. Hy...sulfideassemblage in the North zone,comprisingpyrite, violarite-polydymite, and millerite, is compatiblewith ...sulfideparagenesis andidentifiedmillerite, gersdorffite,and violarite in the North zone. Chalcopyriteis the principalmineralof...boundaryof an ophioliteslice,at preted as an accretionaryprism (St-Julienand Hubert, 1975), comprises an oph |  | Nickel, E. H., Allchurch, P. D., Mason, M. G., Wilmshurst, J. R. (1977) Supergene alteration at the Perseverance nickel deposit, Agnew, Western Australia. Economic Geology, 72 (2) 184-203 doi:10.2113/gsecongeo.72.2.184 | Journal (article/letter/editorial) | | and pentlandire,has produceda supergenepyrite-violarite assemblagethat has been replacedby goethite,carbonates...the supergeneprofile is attributed dominantly to an episodeof lateritic weathering betweenthe Eocene...in all sulfide with hot summers, mild winters, and an irregular zones. Detailed channel samplingof the...was an MAC instrmnent and was has outlined a mineral reserve of 45 million metric operatedat an excitationpotential...::::::::::::::::::::::::::::::::: ::::- ;::. âą. , , :.;.:. VIOLARITE-PYRITE ZONE / PRIMARY SULFIDE ::::::::::: |  | | Journal (issue) | | Garvin & G. Tribbey The minerals of the Hunting Hill quarry, Rockville, Maryland . . . . . . . . . . . . ....its discovery, well before the moisture and dust of an operating mine had had time to exert their destructive...by Pavel Rayanov, a miner, during construction of an inclined underground shaft in the Kedykverpakhk area...formation of aluminum silicates. Hyperagpaite is an extreme manifestation of this condition. Alkaline...contain revdite. MINERALS Aegirine NaFeSi2O6 Aegirine, an important rock-forming mineral in the Palitra pegmatite |  | | Journal (article/letter/editorial) | | Linnaeite series minerals from the Kalgoorlie district, Western Australia J. OSTWALD The Broken Hill...Co3S4, siegenite(Co, Ni)3S4, carrollite Co2CuS4, violarite Ni2FeS4, and polydymite Ni3S4 occur in nickel...Kambalda and Scotia deposits of the Kalgoorlie district, Western Australia. Linnaeite, siegenite, carrollite...Kambalda and Scotia nickel deposits of the Kalgoorlie district, Western Australia (Ostwald, 1973), have shown...Co3S4, siegenite (Co, Ni)3S4, carrollite Co2CuS4, violarite Ni2FeS4, and polydymite Ni3S 4. Although the linnaeite |  | | Report (volume) | | _______________________________ Bravoite and violarite ______________________________ ---Vaesite----...---------------------------------- Lynn Lake district----------------------------------------Thompson-~oak...____________________________________ - ___ Kenora district ______ ----- ___________________________ ----...___ ------------------------------------U nga va district ______________________________ - _- ---------UI...fifth most abundant element of the earth, having an average bulk percentage of 2.7. The average nickel |  | | Journal (article/letter/editorial) | | intergrowth, an unnamed mineral with a composition of Cu3Pt, orcelite in carbonized serpentinite, and sperrylite...sperrylite and electrum in serpentinite. Sulfide mineralization formed at the late magmatic stage of the...rock, sulfide and noble metal mineralization, serpentinite, listvenite, rodingite, chromitite DOI: 10....sulfoarsenides: laurite, osarsite, irarsite, zacarinite, and an unnamed phase with the composition PtCu3; and AuâAg...with chromite, were formed in the upper mantle with an insignificant fS2. Ru, Ir, and Os arsenides and sulfoarsenides |  | Konnunaho, J. P., Hanski, E. J., Bekker, A., Halkoaho, T. A. A., Hiebert, R. S., Wing, B. A. (2013) The Archean komatiite-hosted, PGE-bearing NiâCu sulfide deposit at Vaara, eastern Finland: evidence for assimilation of external sulfur and post-depositional desulfurization. Mineralium Deposita, 48 (8) 967-989 doi:10.1007/s00126-013-0469-0 | Journal (article/letter/editorial) | | consisting of pyrite, pentlandite, millerite, violarite, and chalcopyrite accompanied by abundant magnetite...ed magma. The parental magma was an Al-undepleted komatiite with an estimated MgO content of at least...MREE, suggesting that crustal contamination played an important role in the genesis of the Vaara deposit...magnetite and the presence of millerite- and violarite-bearing, pyrrhotite-free sulfide assemblages indicate...by komatiitic extrusive and intrusive bodies are an important source for Ni and, in some cases, byproducts |  | | Journal (volume) | | Survey of Fin!and, Bulletin 315. 58 pages, 24 figures an d 19 tables. In eastern Finland the Archean complex...agonal and monoclinic pyrrhotite, pentlandite, violarite, chalcopyrite, pyrite and m agnetite. Minor amounts...drilling (Pehkonen 1963). An 'airborne geophysieal survey was made over an area of about 1000 km~. Groundborne...Groundborne eleetrieal and magnetie measurements eovered an area of 46 km'~ and gravimetrie survey 10 km 2 âą...of vhe deposiJts were exeavated for sampling, and an additional 2523 m were drilled, mainly in the Peuraaho |  | | Journal (article/letter/editorial) | | ultrarnafic rocks. Magnetite and hematite, bravoite, violarite and millerite are among the minerals formed during...clinopyroxene, Ca42Mg53Fe5. Plagioclase occurs exclusively as an interstitial phase and ranges from calcic andesine...center of fibrous brown lizardite r i m m e d by an a m o r p h o u s brown serpentine. Chrysotile occurs...types show little variation from an average of 0. ii%, neglecting an erratic high in each of websterite...pyroxenites there is an increase of sulfur, and therefore sulfide content, with an increase of olivine |  | | Journal (issue) | | 207 by Sergio Gallo Pennsylvania Minerals: I Violarite from the Gap Nickel M in e ................................ 209 by J. A. Speer, and E. C. Martin An American Mineralogist, Part V I ...................Sulfosalt Environment: The Mineralogy of the Julcani District, P e r u ....................................215...like to dis cuss some alternatives to consider. An obvious repository for important collections are...answer if they fail in their charge. They also have an obligation to the public that is equally impossible |  | | Book (edition) | | Geoscience 3 THE ORE MINERALS UNDER THE MICROSCOPE An Optical Guide Second Edition Atlases in Geoscience...Geoscience 3 THE ORE MINERALS UNDER THE MICROSCOPE An Optical Guide Second Edition Bernhard Pracejus Sultan...environment that has not yet been examined adequately. An example for such a situations can be seen in euhedral...(previous and new) were electronically enhanced through an increased resolution (not sharpness) to counter fuzziness...al. (1999), Naldrett (2005), Strunz et al. (1958). An enormous wealth of data regarding mineral associations |  | | Journal (issue) | | show, a reputable dealer was overheard describing an ex citing new acquisition. His comments on the fact...(!) but was consequently restored to perfection. An especially interesting example encompassing restoration... minerals have apparently not been considered on an equal plane by the bulk of the profession; repair...and others, is that the end product is frequently an excellent rendition of the âoriginal per fection...consider repairs if they are well executed. This is an interesting contrast to the older collectors of the |  | | Report (issue) | | NICKEL MINERALIZATION IN WESTERN AUSTRALIA An oblique aerial view, from the south-southwest, ofthe...the Geological Survey by mining companies, to give an account of each deposit and its geological setting...Carr Boyd fiuction variesfrom 5 to 23per cent with an accompanying Rocks, Sally Malay) increase in Ni:Cu...metals A gussan is the oxidized and leached outcrop of an are included only if they accompany nickel. ore-gangue...the oxides and gangue minerals. A pseudogossan is an ironstone outcrop, with or without SOURCES OF INFORMATION |  | | Journal (article/letter/editorial) | | April 2002, Vol. 66(2), pp. 313â326 Hypogene violarite of exsolution origin from Mount Keith, Western...Australia: field evidence for a stable pentlandite ^violarite tie line B. A. GRGURIC* Geology and Resource Evaluation...Australia ABSTR ACT In most documented occurrences, violarite (FeNi2S4) occurs as a product of the supergene...predicted the possible existence of a stable violariteâpentlandite tie line, though there has been little...line. This paper documents the occurrence of violarite-pentlandite+pyrite assemblages which, on the basis |
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