 | | Journal (article/letter/editorial) | | in the Traföà serpentinite near Kirchdorf/Styria, Austria (Kirchdorf tunnel, S35, southern tunnel portals...Tunnelvortriebsarbeiten im Serpentinit von Traföà bei Kirchdorf/Steiermark (Kirchdorf-Tunnel, S35) wurden...antigoritische Charakter dieses Serpentinitkörpers (bei nur untergeordnetem Auftreten von Chrysotil) ebenfalls...antigoritreicher Proben zeigte, dass der vorliegende Antigorit bei mechanischer Bearbeitung dem Chrysotil vergleichbare...im Serpentinit von Traföà auftretende Antigorit bei mechanischer Bearbeitung im Zuge der Tunnelvortriebsarbeiten |  | Edahbi, Mohamed, Mermillod-Blondin, RaphaĂ«l, Plante, BenoĂźt, Benzaazoua, Mostafa (2019) CIL Gold Loss Characterization within Oxidized Leach Tails: Creating a Synergistic Approach between Mineralogical Characterization, Diagnostic Leach Tests, and Preg-Robbing Tests. Minerals, 9 (9) 557 doi:10.3390/min9090557 | Journal (article/letter/editorial) | | Mineralogical Characterization, Diagnostic Leach Tests, and Preg-Robbing Tests Mohamed Edahbi 1,2, *, RaphaĂ«l Mermillod-Blondin...in sulphides, solid-solution in arsenopyrite, and preg-robbing material such as carbonaceous matter, and...and so on. The diagnostic leach test (DLT) and preg-robbing (PR) approaches are widely used to investigate...qualitatively evaluate the gold occurrences within the ore. Preg-robbing, or the oreâs capacity to fix dissolved...physical surface interactions (preg-borrowing) and chemical interactions (preg-robbing). The objective of |  | Pienaar, D., Guy, B.M., Hofmann, A., Viljoen, K.S. (2015) A Geometallurgical Characterization of the Vaal Reef A-Facies at the Moab Khotsong Mine, Klerksdorp Goldfield, South Africa. South African Journal of Geology, 118 (4) 455-472 doi:10.2113/gssajg.118.4.455 | Journal (article/letter/editorial) | | (Lottering et al., 2008; Coetzee et al., 2010; Lorenzen and Barnard, 2011; references therein). This paper...angular to well-rounded quartz pebbles, with a fine- to medium-grained quartz sand matrix (Figure 3)....conglomerate matrix composition of fine- to coarse-grained quartz sand (Qtz), metamorphic muscovite (Msc) and chlorite...larger polycrystalline quartz pebbles (Poly Qtz), filled with fine-grained quartz sand (Qtz) and a fine-grained...(Fe3+) as an oxidant (Lottering et al., 2008; Lorenzen and Barnard, 2011; Pownceby and Johnson, 2014) |  | | Journal (article/letter/editorial) | | matter and other gangue minerals such as muscovite, quartz, and rutile. The underpining leaching mechanism...two gold ores comprise common minerals such as quartz, chamosite, albite, ephesite, clinozoisite, larnite...Pyrite Arsenopyrite Pyrrhotite Other Sulphides Quartz Feldspar Muscovite/Illite/Biotite Other silicates...the organic carbon acid-soluble. Studies on the preg-robbing capacity of the bio-oxidation products showed...showed was acid-soluble. Studies on the preg-robbing capacity of the bio-oxidation products showed greater |  | | Journal (article/letter/editorial) | | MASSIF EXCURSION GUIDE ĂMG CONFERENCE LEOBEN 2015, AUSTRIA by Oskar A.R. Thalhammer & Heinrich Mali Department...Geosciences and Geophysics MontanuniversitĂ€t Leoben, Austria Abstract The Kraubath UltramaïŹc Massif, located...valley into the western (âGulsenâ) and the eastern (âPregâ) part. Geological situation from NEUBAUER (1988)...discovered (Fig. 2). Fig. 2 Arial relief image (GIS Styria) of part of the Gulsen mountain, W oft he Mur valley...amphibole, sometimes they contain zoisite and/or quartz and albite (Fig. 7). Intergrowths of amphibole |  | | Journal (article/letter/editorial) | | MASSIF EXCURSION GUIDE ĂMG CONFERENCE LEOBEN 2015, AUSTRIA by Oskar A.R. Thalhammer & Heinrich Mali Department...Geosciences and Geophysics MontanuniversitĂ€t Leoben, Austria Abstract The Kraubath Ultramafic Massif, located...valley into the western (âGulsenâ) and the eastern (âPregâ) part. Geological situation from NEUBAUER (1988)...discovered (Fig. 2). Fig. 2 Arial relief image (GIS Styria) of part of the Gulsen mountain, W oft he Mur valley...amphibole, sometimes they contain zoisite and/or quartz and albite (Fig. 7). Intergrowths of amphibole |  | Qiu, Xiao-bin, Wen, Jian-kang, Huang, Song-tao, Yang, Hong-ying, Liu, Mei-lin, Wu, Biao (2017) New insights into the extraction of invisible gold in a low-grade high-sulfur Carlin-type gold concentrate by bio-pretreatment. International Journal of Minerals, Metallurgy, and Materials, 24 (10). 1104-1111 doi:10.1007/s12613-017-1501-7 | Journal (article/letter/editorial) | | secondary product during the bio-pretreatment, and the preg-robbing capacity of the carbonaceous matter in the...dissolved gold via a well-known phenomenon called preg-robbing [10â11]. Numerous studies have been carried...composed of arsenian pyrite (74.69wt%), gangue quartz (8.69wt%), gangue muscovite (4.81wt%), arsenopyrite...36 6.58 27.02 2.5. Preg-robbing studies 3. Results and discussion The preg-robbing index (PRI) test...= 0 indicates that preg-robbing does not occur, 0 < PRI < 1.0 indicates that preg-robbing occurs at a |  | Zhang, Shuang-hua, Zheng, Ya-jie, Cao, Pan, Li, Chao-hui, Lai, Shen-zhi, Wang, Xing-jun (2018) Process mineralogy characteristics of acid leaching residue produced in low-temperature roasting-acid leaching pretreatment process of refractory gold concentrates. International Journal of Minerals, Metallurgy, and Materials, 25 (10). 1132-1139 doi:10.1007/s12613-018-1664-x | Journal (article/letter/editorial) | | existed as native gold, argentite, and proustite. Quartz, the main gangue mineral, accounted for 78.33wt/%... and proustite. The gangue minerals are mainly quartz, followed by potassium feldspar, plagioclase, and...08 0.01 Sphalerite Galena, sardinianite Rutile Quartz Potassium feldspar, anorthose Sericite 0.01 0...the other is a superfine inclusion embedded in quartz and other gangue minerals with the disseminated...(G); (b) the superfine pyrite (white) wrapped in quartz (Q) with the disseminated form. S.H. Zhang et |  | | Journal (article/letter/editorial) | | the gold is then adsorbed on to gangue minerals (preg-robbed) and net cyanidation recovery can be less...encapsulated in microcrystalline quartz and unfractured sulphide grains, and (2) preg-robbing of liberated gold...(mesothermal) gold deposits is typically dominated by quartz veins and immediate wall rock, where sulphide minerals...1998). Gold generally occurs as free grains in quartz or is encapsulated in sulphide minerals, and the...lowered gold recovery in orogenic deposits is ââpreg-robbingââ, where gold dissolved by cyanide is removed |  | | Journal (article/letter/editorial) | | gold loss from the processing facility through âpreg-robbingâ. Processing of the Fosterville ore is achieved...ultimately onto the CIL circuit. This NCC has a notable preg-robbing ability. Treatment of black shale ores,...the gold loss from the leach circuit attributed to preg-robbing. Standard technologies for the dealing with...performance. Keywords: Gold mining, Heated leaching, Preg-robbing, Gold recovery This paper is part of a...arsenopyrite and pyrite forming a halo to veins in a quartz: carbonate veinlet stockwork, which is in turn |  | Xiao, Hanxin, Jin, Jianping, He, Fayu, Han, Yuexin, Sun, Yongsheng (2022) Strengthening Gold Extraction from Carbonaceous Gold Ore Based on Decarburization by Two-Stage Fluidized Oxidation Roasting. Minerals, 12 (12) 1620 doi:10.3390/min12121620 | Journal (article/letter/editorial) | | processes from refractory ores. To eliminate the gold preg-robbing effect of carbonaceous matters in the gold...or blanking agents [1,9]. Due to the strength of preg-robbing varying from ore to ore, these methods have...the organic carbon exceeds 0.2%, a serious gold preg-robbing phenomenon would occur. In addition, graphite...Content (wt%) 0.23 exceeds 0.2%, a serious gold preg-robbing phenomenon would occur. In addition, grapha...reactor, porous quartz in a fluidized bed reactor withsize a pore reactor, thethe porous quartz plateplate |  | | Journal (article/letter/editorial) | | ore, the management of cyanide, the challenge of preg-robbing, the value of plant modelling and simulation...other minerals. Examples range from large grains in quartz veins to fine inclusions or solid solution in sulphides...difficulty in focusing on the size range of major loss. Preg-robbing is a serious problem with many orebodies...adverse effect of a preg-robbing component in the ore. These principles are: to segregate preg-robbing Ă 2012...gravity, carbonaceous material responsible for the preg-robbing. This was only partially successful as attendant |  | | Book (edition) | | treat carbonaceous âpreg-robbingâ material at Goldstrike in Nevada. Carbonaceous, preg-robbing ores are...of other problematic ores, such as carbonaceous preg-robbing, tellurides, and antimonial ores. The general...rotating biological contactor rotating electrochemical quartz-crystal microbalance resin-in-leach resin-in-pulp...deposits in 1911, and the opening up of the Porcupine district in 1912, Ontario held ïŹrst place ever since. Gold...chalcopyrite [CuFeS2], enclosed in pyrite [FeS2], and quartz (the latter two are considered in most cases as |  | | Journal (article/letter/editorial) | | by graphite in carbonaceous gold ore resulting in preg-robbing gold. In order to clarify the adsorption...the understanding of the mechanisms involved in preg-robbing gold formation by graphite and the optimization...resource, the processing of which is impacted by âpreg-robbingâ behavior and the inhibition of Au dissolution...investigated the adsorption of water molecules on quartz (001) surfaces using CASTEP codes. The abovementioned...graphite resulting in the loss of gold, called âpreg-robbingâ. The configuration of [Au(CN)2 ]â and the |  | | Journal (issue) | | packed and we were on our way north to collect quartz at Drammen with Egil Hollund, Kjell Hasle, Magnu...in hope s of finding sceptered smoky or phantom quartz , gamet, aquamarine and ve suvianite in the rotting...end came away with some interesting specimens of quartz and garnet. Egil and Kjell know this spot well...anatase on smoky quartz and rare specie s and native lead from the Langban district. Thes e are there...areas. Also to be found in Norway is wonderful quartz of all varieties and shade s of color, gemmy aquamarine |  | | Journal (article/letter/editorial) | | determined by SEM-MLA a considerable presence of quartz and relation is found to be more dispersed due...determined SEM-MLA showed a considerable presence of quartz and pyrite (1.6%), galenaby and pyrrhotite (0.4%)...aluminosilicate minerals, with a major proportion of quartz, mica, and chlorite, thus Total Au recovery (%)...components, such as font cyanide and 40 oxygen consumers, preg-robbers, and other minerals such as clay minerals...aluminosilicate minerals, with a major proportion of quartz, mica, and chlorite, thus showing a 20.0 in gold |  | | Journal (issue) | | . dillen Wald (Schoberpass) . Gulsen . Labming. Preg, Oberdorf (Laming ] Anoniem, 1992, Sonderband "Die...Kraubather Serpentinitstock bij Gulsen, Lobming, Preg . Die Magnesitlagerstatte Sunk beiHohentauer n... Slowake i AGAB MINIBUL 26(7), 09 .9 3 1-6 Les quartz de Crupet AGAB Minibul 26(9), 11 .9 3 1-7 Les mĂ©tĂ©orite...Dolomit und Achat au s deni Serpentinit-Steinbruch bei Pingendorf . Niederosterreic h 47-51 Halotrichit...Graphitbergbau be i Zettlitz . nahe Wollmersdorf bei Eibenstein . NiederĂłsterreic h 52-56 Pyrit-Konkretionen |  | Cindy, , Sakai, Ryotaro, Mendoza, Diego M., Konadu, Kojo T., Sasaki, Keiko (2021) Significance of Acid Washing after Biooxidation of Sulfides in Sequential Biotreatment of Double Refractory Gold Ore from the Syama Mine, Mali. Minerals, 11 (12) 1316 doi:10.3390/min11121316 | Journal (article/letter/editorial) | | Kazakhstan, the Natalkinsk in Russia, and the Ratatotok district, North Sulawesi in Indonesia [1â6], which include...loss. This detrimental phenomenon is well known as preg-robbing and generally leads to financial losses...a more activate adsorbent, resulting in a higher preg-robbing ability during cyanidation. Furthermore...of 2⊠minâ1 . The original DRGO includes pyrite, quartz, muscovite, albite, magnesite, and dolomite as...elemental and/or organic carbon, which has high preg-robbing capacity [33]. This was also confirmed by |  | | Journal (article/letter/editorial) | | matters and goldâcyanide complexes is called the âpreg-robbingâ phenomenon. Especially, studies have shown...shown that the carbonaceous matters can trigger the âpreg-robbingâ phenomenon when the content in a gold ore...is of great significance in characterizing its âpreg-robbingâ capability. The main carbonaceous matters...will enhance the âpreg-robbingâ capability during cyanidation [5]. Besides, the âpreg-robbingâ capability...the carbon maturity, the stronger the capacity of âpreg-robbingâ [3,6]. Moreover, research also indicated |  | | Journal (article/letter/editorial) | | refractory sulphide ores (iv) silicate bound gold (v) preg robbing ores (vi) low grade tailings material (vii)...tonaliteâgranodioriteâ(monzonite). Gold hosted in quartzâsulphide lodes with shear and fault zones (Sherrenberg...DescheÌnes et al.); Calgary, Alta, MetSoc, 711â715. Lorenzen, L. 1995. Some guidelines to the design of a diagnostic |  | | Journal (article/letter/editorial) | | minerals and activated carbon to adsorb gold (I) (preg-robbing) in nonammoniacal thiosulfate solutions...pyrite and chalcopyrite as well as carbon were highly preg-robbing with 100% gold adsorbed within half an hour...kaolinite, goethite and hematite were significantly less preg-robbing under the same conditions. The presence...eliminate preg-robbing of gold on mineral surfaces. Copper (I) was found to enhance the preg-robbing of...of gold by oxide minerals but reduced the preg-robbing of gold caused by sulfide minerals and carbon |  | Kiseleva, Yu.A., Zheglova, T.P., Dakhnova, M.V., Mozhegova, S.V., Nazarova, E.S., Nechitailo, G.S. (2017) The role of Domanik deposits in the formation of oil pools in the central areas of the Volga-Ural petroleum province (Buzuluk depression) Russian Geology and Geophysics, 58 (3) 310-321 doi:10.1016/j.rgg.2016.09.007 | Journal (article/letter/editorial) | | using a flame ionization detector (FID) and a DB-1 quartz capillary column (60 m Ă 0.32 mm, a stationary...0.78 0.59 0.75 0.78 0.67 0.62 0.67 0.60 Preg/ C27 2.72 8.26 0.77 1.30 1.02 0.28 0.35 ...Dia/Reg, C27 ÎČαα 20S diasterane/C29 ααα 20R sterane; Preg/C27, pregnane/C27 ααα 20R sterane; Tri/Hop, C23...Tm C29 SSR C29 C29 ÎČÎČαα S/R C29 Dia/ ÎČÎČ/αα Reg Preg/ C27 Tri/ Hop Triterpanes Steranes Alkanes Sulfur...have significantly higher values of the parameters Preg/C27 and Tet/C26 Tri than the other oils studied |  | | Journal (article/letter/editorial) | | . . . . . . . . . 99 COLLLWS, J. H., on black quartz crystals . . . . . . . . . 19. ,, on Cornish tin-stones...Newfoundland . . . . . . . . . . . . . . . Gold-bearing Quartz, pasty form of silica f r o m . . . . . . . . ...r . , on c r y s t a l of a]uzn K 6 i l a c h (Styria), new resin f r o m . . Kupferniekel . rAG~ 220.... . . . . . . Pectelite . . . . . P e g g a u (Styria), W i t h e r i t e f r o m P e n h a l l toad's-eye...e a r ,, mineral from Plyathite . Porphyrlm Preg~tten . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | . . . . . . . . . 99 COLLLWS, J. H., on black quartz crystals . . . . . . . . . 19. ,, on Cornish tin-stones...Newfoundland . . . . . . . . . . . . . . . Gold-bearing Quartz, pasty form of silica f r o m . . . . . . . . ...r . , on c r y s t a l of a]uzn K 6 i l a c h (Styria), new resin f r o m . . Kupferniekel . rAG~ 220.... . . . . . . Pectelite . . . . . P e g g a u (Styria), W i t h e r i t e f r o m P e n h a l l toad's-eye...e a r ,, mineral from Plyathite . Porphyrlm Preg~tten . . . . . . . . . . . . . . |  | Li, Qian, Ji, Fang-zhou, Xu, Bin, Hu, Jian-jun, Yang, Yong-bin, Jiang, Tao (2017) Consolidation mechanism of gold concentrates containing sulfur and carbon during oxygen-enriched air roasting. International Journal of Minerals, Metallurgy, and Materials, 24 (4). 386-392 doi:10.1007/s12613-017-1418-1 | Journal (article/letter/editorial) | | sulfide wrap of ultrafine gold particles and the âpreg-robbingâ of carbonaceous matter. On the one hand...gold during cyanide leaching, which is known as âpreg-robbingâ [1â2]. On the other hand, a considerable...carried out in three steps: (1) the air in the quartz tube was totally excluded by nitrogen at the start...pushed into position below the thermocouple in the quartz tube after the specified temperature was achieved;...5âelectric horizontal tube furnace; 6âmaterial loader; 7âquartz tube; 8âair condenser; 9, 11âexhaust absorption |
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Preg, Sankt Lorenzen bei Knittelfeld, Sankt Margarethen bei Knittelfeld, Murtal District, Styria, Austria