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Journal articles on the topic 'Invisible gold'

Author: Grafiati

Published: 10 December 2022

Last updated: 31 July 2025

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1

Volkov, A. V., and A. A. Sidorov. "Invisible gold." Herald of the Russian Academy of Sciences 87, no. 1 (2017): 40–48. http://dx.doi.org/10.1134/s1019331617010051.

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2

Asadi, H. H., J. H. L. Voncken, and M. Hale. "Invisible gold at Zarshuran, Iran." Economic Geology 94, no. 8 (1999): 1367–74. http://dx.doi.org/10.2113/gsecongeo.94.8.1367.

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3

Ciobanu, Cristiana L., Nigel J. Cook, Allan Pring, Joël Brugger, Leonid V. Danyushevsky, and Masaaki Shimizu. "‘Invisible gold’ in bismuth chalcogenides." Geochimica et Cosmochimica Acta 73, no. 7 (2009): 1970–99. http://dx.doi.org/10.1016/j.gca.2009.01.006.

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4

Large, Ross R., and Valeriy V. Maslennikov. "Invisible Gold Paragenesis and Geochemistry in Pyrite from Orogenic and Sediment-Hosted Gold Deposits." Minerals 10, no. 4 (2020): 339. http://dx.doi.org/10.3390/min10040339.

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LA-ICPMS analysis of pyrite in ten gold deposits is used to determine the precise siting of invisible gold within pyrite, and thus the timing of gold introduction relative to the growth of pyrite and related orogenic events. A spectrum of invisible gold relationships in pyrite has been observed which suggests that, relative to orogenic pyrite growth, gold introduction in some deposits is early at the start of pyrite growth; in other deposits, it is late toward the end of pyrite growth and in a third case, it may be introduced at the intermediate stage of orogenic pyrite growth. In addition, we

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5

Vikentyev, Ilya, Olga Vikent’eva, Eugenia Tyukova, et al. "Noble Metal Speciations in Hydrothermal Sulphides." Minerals 11, no. 5 (2021): 488. http://dx.doi.org/10.3390/min11050488.

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A significant part of the primary gold reserves in the world is contained in sulphide ores, many types of which are refractory in gold processing. The deposits of refractory sulphide ores will be the main potential source of gold production in the future. The refractory gold and silver in sulphide ores can be associated with micro- and nano-sized inclusions of Au and Ag minerals as well as isomorphous, adsorbed and other species of noble metals (NM) not thoroughly investigated. For gold and gold-bearing deposits of the Urals, distribution and forms of NM were studied in base metal sulphides by

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6

MacKenzie, Doug, Dave Craw, and Craig Finnigan. "Lithologically controlled invisible gold, Yukon, Canada." Mineralium Deposita 50, no. 2 (2014): 141–57. http://dx.doi.org/10.1007/s00126-014-0532-5.

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7

Bustos Rodriguez, H., D. Oyola Lozano, Y. A. Rojas Martínez, G. A. Pérez Alcázar, and A. G. Balogh. "Invisible gold in Colombian auriferous soils." Hyperfine Interactions 166, no. 1-4 (2006): 605–11. http://dx.doi.org/10.1007/s10751-006-9327-0.

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8

Spry, P. G., and S. E. Thieben. "The distribution and recovery of gold in the Golden Sunlight gold-silver telluride deposit, Montana, U.S.A." Mineralogical Magazine 64, no. 1 (2000): 31–42. http://dx.doi.org/10.1180/002646100549111.

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AbstractThe gold balance in an ore deposit where the ore is treated by cyanide is the sum of the ‘visible gold’ that is amenable to cyanidation and ‘visible gold’ and the ‘invisible gold’, which are not amenable to cyanidation. Petrographic analyses, electron and ion microprobe as well as scanning electron microscope studies of ore from the Golden Sunlight deposit, Montana, suggest that periods of relatively poor gold recoveries are primarily due to the presence of inclusions, <25 µm in size, of native gold, petzite, calaverite, buckhornite and krennerite. These are encapsulated in cyanide

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9

Ivashchenko, Vasily I. "Ore Formation and Mineralogy of the Alattu–Päkylä Gold Occurrence, Ladoga Karelia, Russia." Minerals 14, no. 11 (2024): 1172. http://dx.doi.org/10.3390/min14111172.

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The Alattu–Päkylä gold occurrence is located in the Northern Lake Ladoga area, in the Raaha-Ladoga suprasubduction zone, at the Karelian Craton (AR)—Svecofennian foldbelt (PR1) boundary. Its gold ore mineral associations are of two types of mineralization: (1) copper–molybdenum–porphyry with arsenopyrite and gold (intrusion-related) and (2) gold–arsenopyrite–sulfide in shear zones. Optical and scanning electron microscopy, X-ray fluorescence spectrometry, inductively coupled plasma mass spectrometry (ICP-MS), instrumental neutron activation analysis (INAA) and fire analysis with AAS finishing

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10

Li, Chang-Ping, Jun-Feng Shen, Sheng-Rong Li, Yuan Liu, and Fu-Xing Liu. "In–Situ LA-ICP-MS Trace Elements Analysis of Pyrite and the Physicochemical Conditions of Telluride Formation at the Baiyun Gold Deposit, North East China: Implications for Gold Distribution and Deposition." Minerals 9, no. 2 (2019): 129. http://dx.doi.org/10.3390/min9020129.

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The Baiyun gold deposit is located in the northeastern North China Craton (NCC) where major ore types include Si-K altered rock and auriferous quartz veins. Sulfide minerals are dominated by pyrite, with minor amounts of chalcopyrite, sphalerite and galena. Combined petrological observations, backscattered electron image (BSE) and laser ablation analysis (LA-ICP-MS) have been conducted on pyrite to reveal its textural and compositional evolution. Three generations of pyrite can be identified—Py1, Py2 and Py3 from early to late. The coarse-grained, porous and euhedral to subhedral Py1 (mostly 2

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11

Morishita, Yuichi, and Jamie R. Rogers. "Evolution of the Hydrothermal Fluids Inferred from the Occurrence and Isotope Characteristics of the Carbonate Minerals at the Pogo Gold Deposit, Alaska, USA." Minerals 15, no. 1 (2025): 67. https://doi.org/10.3390/min15010067.

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Pogo is identified as a deep-seated, intrusion-related gold deposit. Carbonate minerals have a close spatial relationship to hydrothermal gold mineralization in all of its principal ore zones. The carbon and oxygen isotopic ratios of carbonate minerals (siderite, ankerite, and calcite) present within the deposit illustrate the isotopic evolution of the ore-forming fluid. The initial hydrothermal fluid phase is interpreted to be magmatic in origin. The fluid evolution was characterized by a gradual decrease in δ18O and a slight increase in δ13C with decreasing temperature. The dominant carbon-b

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12

Sun, Si-Chen, Liang Zhang, Rong-Hua Li, et al. "Process and Mechanism of Gold Mineralization at the Zhengchong Gold Deposit, Jiangnan Orogenic Belt: Evidence from the Arsenopyrite and Chlorite Mineral Thermometers." Minerals 9, no. 2 (2019): 133. http://dx.doi.org/10.3390/min9020133.

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The Zhengchong gold deposit, with a proven gold reserve of 19 t, is located in the central part of Jiangnan Orogenic Belt (JOB), South China. The orebodies are dominated by NNE- and NW- trending auriferous pyrite-arsenopyrite-quartz veins and disseminated pyrite-arsenopyrite-sericite-quartz alteration zone, structurally hosted in the Neoproterozoic epimetamorphic terranes. Three stages of hydrothermal alteration and mineralization have been defined at the Zhengchong deposit: (i) Quartz–auriferous arsenopyrite and pyrite; (ii) Quartz–polymetallic sulfides–native gold–minor chlorite; (iii) Barre

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13

Yang, Meizhi, Quan Wan, Xin Nie, et al. "Quantitative XPS characterization of “invisible gold” in Carlin-type gold ores through controlled acid erosion." Journal of Analytical Atomic Spectrometry 36, no. 9 (2021): 1900–1911. http://dx.doi.org/10.1039/d1ja00102g.

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Quantitative XPS analysis of “invisible gold” in Carlin-type gold ores was accomplished, which revealed Au concentration, percentages of Au+ and Au0, and Au NP size. An acid etching step was demonstrated to be the key to enhancing Au signal in XPS.

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14

Kuznetsova, Inna V., and Anatoly I. Dementienko. "About micro- and nanoscale gold in the veil of gold-bearing territories (on the example of a mineralization site in the basin of the river Adamikha, Amur region)." Georesursy 25, no. 3 (2023): 191–97. http://dx.doi.org/10.18599/grs.2023.3.22.

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The article identifies the problem of the need to take into account micro- (1 mm to 0.12 microns) and nanoscale (<0.12 microns) gold in placers and weathering crusts in order to increase the objectivity of their and eroded ore objects potential assesment. The results of technological studies of gold-bearing deluvial deposits in the valley of the Adamikha river basin (Amur region) are presented. A quantitative assessment of the content of micro- and nanogold by fractions of loose material was made. It was found that in the studied sample of such material (weighing 50 kg), the major part (78%

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15

Lee, Jong Ju, and Cheon Young Park. "The Recovery of Invisible Gold Using Filter Paper." Journal of the Korean Society of Mineral and Energy Resources Engineers 56, no. 4 (2019): 315–25. http://dx.doi.org/10.32390/ksmer.2019.56.4.315.

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16

Reich, Martin, Stephen L. Chryssoulis, Artur Deditius, et al. "“Invisible” silver and gold in supergene digenite (Cu1.8S)." Geochimica et Cosmochimica Acta 74, no. 21 (2010): 6157–73. http://dx.doi.org/10.1016/j.gca.2010.07.026.

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17

Shimada, Nobutaka, Tomoki Nakamura, Yasuo Morinaga, and Yoshihito Shikama. "Invisible Gold from the Hishikari Epithermal Gold Deposit, Japan: Implication for Gold Distribution and Deposition." Resource Geology 55, no. 2 (2005): 91–100. http://dx.doi.org/10.1111/j.1751-3928.2005.tb00231.x.

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18

Gregory, Daniel D. "Analyses under the curve, identifying how invisible gold is held in pyrite." American Mineralogist 108, no. 2 (2023): 225. http://dx.doi.org/10.2138/am-2022-8791.

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Abstract When laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) analyses of pyrite plot below the gold solubility line on a gold vs. arsenic plot and have relatively flat counts on laser ablation time-resolved output graphs, it is often interpreted that the gold is held within the pyrite structure. The study by Ehrig et al. (2023, this issue) shows, using a combination of LA-ICP-MS spot analyses of gold in pyrite, transmission electron microscopy, and electron backscatter diffraction that this is not necessarily the case. Furthermore, they use these same techniques to ide

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19

Ru, Shanshan, Guo Li, Chuandong Xue, et al. "The Study of Gold Mineralization at the Polymetallic Dapingzhang VMS-Type Copper–Gold Deposit, Yunnan Province, China." Minerals 15, no. 1 (2025): 54. https://doi.org/10.3390/min15010054.

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The Dapingzhang Cu-polymetallic deposit in Yunnan is a volcanic massive sulfide (VMS) deposit, located on the western edge of the Lanping–Simao block. Recently, gold-rich polymetallic orebodies with significant economic value have been discovered. However, the occurrence and enrichment mechanisms of the gold remain unclear. This study investigates the massive sulfide orebodies (V1) through detailed geological surveys. Techniques such as optical microscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and electron probe microanalysis (EPMA) were used to clarify the

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20

Palenik, Christopher S., Satoshi Utsunomiya, Martin Reich, Stephen E. Kesler, Lumin Wang, and Rodney C. Ewing. "“Invisible” gold revealed: Direct imaging of gold nanoparticles in a Carlin-type deposit." American Mineralogist 89, no. 10 (2004): 1359–66. http://dx.doi.org/10.2138/am-2004-1002.

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21

Mao, Shuihe. "Characterization of occurence and distribution of invisible gold in ore by EPMA." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 2 (1990): 246–47. http://dx.doi.org/10.1017/s0424820100134831.

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Owing to the invisibility of ultramicron gold (invisible gold) in “Carlin type” gold ore, it is extremely difficult to investigate its occurrence and distribution by conventional determinative means.EPMA has been proved to be very powerful instrument for doing research on this subject because it has advantages of high space resolution, nondestructive,getting quantitative analysis results and observing various kinds of images continuously with same equipment etc.The unoxidized ore sample is selected from drill cuttings at a “Carl in type” gold mine in Southwest China with gold tenor of 31.02 g/

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22

Mao, Shuihe. "Characterization of Occurrence and Distribution of Invisible Gold in Ore by EPMA." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 2 (1990): 544–45. http://dx.doi.org/10.1017/s0424820100136325.

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Owing to the invisibility of ultramicron gold (invisible gold) in “Carl in type” gold ore, it is extremely difficult to investigate its occurrence and distribution by conventional determinative means.EPMA has been proved to be very powerful instrument for doing research on this subject because it has advantages of high space resolution, nondestructive,getting quantitative analysis results and observing various kinds of images continuously with same equipment etc.The unoxidized ore sample is selected from drill cuttings at a “Carlin type” gold mine in Southwest China with gold tenor of 31.02 g/

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23

Malyutina, A. V., Yu O. Redin, A. S. Gibsher, and V. P. Mokrushnikov. "SPATIOTEMPORAL AND GENETIC RELATIONSHIPS OF GOLD ORE AND MERCURY-ANTIMONY MINERALIZATION AT THE HG-SB-GOLD-BEARINGCHAUVAI DEPOSIT (KIRGHIZIA): GEOLOGY, MINERALOGY OF ORES AND FEATURES OF HYDROTHERMAL-METASOMATIC PROCESSES." Geology and mineral resources of Siberia, no. 3 (2021): 61–82. http://dx.doi.org/10.20403/2078-0575-2021-3-61-82.

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The Chauvai Hg-Sb deposit is a striking example of combining two contrasting types of mineralization in space: mercury-antimony and gold ones. The article studies the spatial-temporal and genetic relationships of goldore and mercury-antimony mineralization based on a complex of both traditional geological and mineralogicalgeochemical methods, as well as modern instrumental methods for analyzing the mineral composition. Two types of ores with clear structural confinedness have been found at the deposit: a) mercury-antimonic (cinnabarantimonite) ores, associated with jasperoid breccias and manif

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24

No, Sang-Gun, Maeng-Eon Park, Bong-Chul Yoo, and Seung-Han Lee. "Genesis of Carbonate Breccia Containing Invisible Gold in Taebaeksan Basin, South Korea." Minerals 10, no. 12 (2020): 1087. http://dx.doi.org/10.3390/min10121087.

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The Yemi breccia developed and is distributed within the Paleozoic carbonate rock (Maggol Formation) in the central part of the Taebaeksan Basin, South Korea. Explanation for the genesis of the Yemi breccia has been controversial. We investigated the petrological and mineralogical properties of the breccia and the matrix materials at 60 outcrops. The Yemi breccia is divided into crackle, mosaic, and chaotic breccias based on morphology. In addition, these are divided into blackish, reddish, grayish, and white to pinkish matrix breccias according to the materials of the matrix. Quartz, calcite,

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25

Morishita, Y., N. Shimada, and K. Shimada. "Invisible gold and arsenic in pyrite from the high-grade Hishikari gold deposit, Japan." Applied Surface Science 255, no. 4 (2008): 1451–54. http://dx.doi.org/10.1016/j.apsusc.2008.05.131.

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26

Wang, Yan, Shu Gong, Dashen Dong, et al. "Self-assembled gold nanorime mesh conductors for invisible stretchable supercapacitors." Nanoscale 10, no. 34 (2018): 15948–55. http://dx.doi.org/10.1039/c8nr04256j.

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27

Pokrovski, G. S., C. Escoda, M. Blanchard, et al. "An arsenic-driven pump for invisible gold in hydrothermal systems." Geochemical Perspectives Letters 17 (April 2021): 39–44. http://dx.doi.org/10.7185/geochemlet.2112.

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28

Maddox, L. M., G. Michael Bancroft, M. J. Scaini, and J. W. Lorimer. "Invisible gold; comparison of Au deposition on pyrite and arsenopyrite." American Mineralogist 83, no. 11-12 Part 1 (1998): 1240–45. http://dx.doi.org/10.2138/am-1998-11-1212.

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29

Lee, Jong-Ju, and Cheon-Young Park. "Observability of Invisible Gold using BSE Imagery and Gold Recovery by Microwave-Nitric Acid Leaching." Journal of the Korean Society of Mineral and Energy Resources Engineers 57, no. 1 (2020): 1–11. http://dx.doi.org/10.32390/ksmer.2020.57.1.001.

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30

Ashley, P. M., C. J. Creagh, and C. G. Ryan. "Invisible gold in ore and mineral concentrates from the Hillgrove gold-antimony deposits, NSW, Australia." Mineralium Deposita 35, no. 4 (2000): 285–301. http://dx.doi.org/10.1007/s001260050242.

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31

Schellewald, Barbara. "Gold, Licht und das Potenzial des Mosaiks." Zeitschrift für Kunstgeschichte 79, no. 4 (2016): 461–80. http://dx.doi.org/10.1515/zkg-2016-0035.

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Abstract The article focuses on the complex interaction between gold and light in the very specific medium of mosaic in Late Antiquity and Byzantium. Studying the metaphoric qualities of light/gold and its qualitative distinctions in early Christian and Byzantine sources leads us to an understanding of the complex function of gold or golden tesserae in script and images. As gold is understood as light, mosaic seems to be a more or less perfect medium as it is not stable, but dependent on the changing light. The gold ground is transformed in every moment by light. Mosaic can thus be understood

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32

Molchanov, V. P. "Development of approaches to the creation of technology for extracting "invisible" gold from the ores of the Sukhoe deposit (Primorye)." Proceedings of the Voronezh State University of Engineering Technologies 84, no. 3 (2022): 177–82. http://dx.doi.org/10.20914/2310-1202-2022-3-177-182.

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In the south of the Far East, a large deposit of Sukhoe gold has been identified, where the noble metal is in a dispersed form, being present in the form of microscopic particles, or entering the structure of sulfide minerals. It was found out that the «invisible» (nano) form of finding gold is mainly associated with pyrite and arsenopyrite. To develop a technology for extracting a useful component, the completeness and convenience of opening the stone material with the transfer of all components into a solution is crucial. The article presents the results of a study of the possibility of prep

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33

Pals, D. W., P. G. Spry, and S. Chryssoulis. "Invisible Gold and Tellurium in Arsenic-Rich Pyrite from theEmperor Gold Deposit, Fiji: Implications for Gold Distribution and Deposition." Economic Geology 98, no. 3 (2003): 479–93. http://dx.doi.org/10.2113/gsecongeo.98.3.479.

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34

Lee, Jong-Ju, Eun-Ji Myung, and Cheon-Young Park. "The Effective Recovery of Gold from the Invisible Gold Concentrate Using Microwave-nitric Acid Leaching Method." Journal of the mineralogical society of korea 32, no. 3 (2019): 185–200. http://dx.doi.org/10.9727/jmsk.2019.32.3.185.

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35

Pals, D. W. "Invisible Gold and Tellurium in Arsenic-Rich Pyrite from the Emperor Gold Deposit, Fiji: Implications for Gold Distribution and Deposition." Economic Geology 98, no. 3 (2003): 479–93. http://dx.doi.org/10.2113/98.3.479.

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36

Zhu, Geyunjian Harry, Mohammad Azharuddin, Rakibul Islam, et al. "Innate Immune Invisible Ultrasmall Gold Nanoparticles—Framework for Synthesis and Evaluation." ACS Applied Materials & Interfaces 13, no. 20 (2021): 23410–22. http://dx.doi.org/10.1021/acsami.1c02834.

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37

Majzlan, Juraj, Martin Chovan, Peter Andráš, Matthew Newville, and Michael Wiedenbeck. "The nanoparticulate nature of invisible gold in arsenopyrite from Pezinok (Slovakia)." Neues Jahrbuch für Mineralogie - Abhandlungen 187, no. 1 (2010): 1–9. http://dx.doi.org/10.1127/0077-7757/2010/0156.

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38

Nkuba, Bossissi, Lieven Bervoets, and Sara Geenen. "Invisible and ignored? Local perspectives on mercury in Congolese gold mining." Journal of Cleaner Production 221 (June 2019): 795–804. http://dx.doi.org/10.1016/j.jclepro.2019.01.174.

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39

Silyanov, Sergey A., Anatoly M. Sazonov, Yelena A. Zvyagina, Andrey A. Savichev, and Boris M. Lobastov. "Gold in the Oxidized Ores of the Olympiada Deposit (Eastern Siberia, Russia)." Minerals 11, no. 2 (2021): 190. http://dx.doi.org/10.3390/min11020190.

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Native gold and its satellite minerals were studied throughout the 300 m section of oxidized ores of the Olympiada deposit (Eastern Siberia, Russia). Three zones are identified in the studied section: Upper Zone ~60 g/t Au; Middle Zone ~3 g/t Au; Lower Zone ~20 g/t Au. Supergene and hypogene native gold have been found in these zones. Supergene gold crystals (~1 μm), their aggregates and their globules (100 nm to 1 μm) predominate in the Upper and less in Middle Zone. Relic hypogene gold particles (flattened, fracture and irregular morphology) are sporadically distributed throughout the sectio

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40

Fridovsky, Valery Yurievich, Lena Idenenovna Polufuntikova, and Maxim Vasilievich Kudrin. "Origin of Disseminated Gold-Sulfide Mineralization from Proximal Alteration in Orogenic Gold Deposits in the Central Sector of the Yana–Kolyma Metallogenic Belt, NE Russia." Minerals 13, no. 3 (2023): 394. http://dx.doi.org/10.3390/min13030394.

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The Yana–Kolyma metallogenic belt, NE Russia, is a world-class gold belt with resources numbering ~8300 tons of gold. The belt is localized in the central part of the Verkhoyansk–Kolyma orogen, formed by a collage of diverse terranes. The Tithonian-to-Early-Cretaceous orogenic gold deposits are hosted in a sequence of Permian–Triassic and Jurassic clastic rocks and altered Late Jurassic andesite, dacite, granodiorite, trachyandesite, and trachybasalt dykes. High-fineness gold (800–900‰) in quartz veins and invisible gold in disseminated arsenian pyrite-3 (Py3) and arsenopyrite-1 (Apy1) are pre

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41

Barker, S. L. L., K. A. Hickey, J. S. Cline, et al. "UNCLOAKING INVISIBLE GOLD: USE OF NANOSIMS TO EVALUATE GOLD, TRACE ELEMENTS, AND SULFUR ISOTOPES IN PYRITE FROM CARLIN-TYPE GOLD DEPOSITS." Economic Geology 104, no. 7 (2009): 897–904. http://dx.doi.org/10.2113/gsecongeo.104.7.897.

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42

Barker, S. L. L., K. A. Hickey, J. S. Cline, et al. "UNCLOAKING INVISIBLE GOLD: USE OF NANOSIMS TO EVALUATE GOLD, TRACE ELEMENTS, AND SULFUR ISOTOPES IN PYRITE FROM CARLIN-TYPE GOLD DEPOSITS." Economic Geology 104, no. 7 (2009): 897–904. http://dx.doi.org/10.2113/econgeo.104.7.897.

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43

Genkin, Alexander D., Nikolai S. Bortnikov, Louis J. Cabri, et al. "A multidisciplinary study of invisible gold in arsenopyrite from four mesothermal gold deposits in Siberia, Russian Federation." Economic Geology 93, no. 4 (1998): 463–87. http://dx.doi.org/10.2113/gsecongeo.93.4.463.

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44

Larocque, A. C. L., J. A. Stimac, G. McMahon, et al. "ION-MICROPROBE ANALYSIS OF FeTi OXIDES: OPTIMIZATION FORTHE DETERMINATION OF INVISIBLE GOLD." Economic Geology 97, no. 1 (2002): 159–64. http://dx.doi.org/10.2113/gsecongeo.97.1.159.

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45

Sidorova, N. V., V. V. Aristov, A. V. Grigor’eva, and A. A. Sidorov. "“Invisible” Gold in Pyrite and Arsenopyrite from The Pavlik Deposit (Northeastern Russia)." Doklady Earth Sciences 495, no. 1 (2020): 821–26. http://dx.doi.org/10.1134/s1028334x20110136.

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46

Pokrovski, Gleb S., Maria A. Kokh, Olivier Proux, et al. "The nature and partitioning of invisible gold in the pyrite-fluid system." Ore Geology Reviews 109 (June 2019): 545–63. http://dx.doi.org/10.1016/j.oregeorev.2019.04.024.

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47

Shapiro, B. I., E. S. Kol’tsova, A. G. Vitukhnovskii, D. A. Chubich, A. I. Tolmachev, and Yu L. Slominskii. "Interaction between gold nanoparticle plasmons and aggregates of polymethine dyes: “Invisible” nanoparticles." Nanotechnologies in Russia 6, no. 7-8 (2011): 456–62. http://dx.doi.org/10.1134/s1995078011040112.

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48

Wang, Jingjing, Guotao Duan, Yue Li, et al. "An Invisible Template Method toward Gold Regular Arrays of Nanoflowers by Electrodeposition." Langmuir 29, no. 11 (2013): 3512–17. http://dx.doi.org/10.1021/la400433z.

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Kovalchuk, E. V., B. R. Tagirov, I. V. Vikentyev, et al. "“Invisible” Gold in Synthetic and Natural Arsenopyrite Crystals, Vorontsovka Deposit, Northern Urals." Geology of Ore Deposits 61, no. 5 (2019): 447–68. http://dx.doi.org/10.1134/s1075701519050039.

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Kovalchuk, E. V., B. R. Tagirov, I. V. Vikentyev, et al. "“Invisible” gold in synthetic and natural arsenopyrite crystals (Vorontsovka deposit, Northern Urals)." Геология рудных месторождений 61, no. 5 (2019): 62–83. http://dx.doi.org/10.31857/s0016-777061562-83.

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Abstract:

In many types of hydrothermal ore deposits Au occurs in invisible state in most common minerals of the Fe-As-S system. It is supposed that the state of theinvisible Au may beeither non-structural (nano-sized inclusions of metal and its compounds) or chemically bound (isomorphous solid solution). Here we report results of investigation of the state and the concentration range ofinvisible Au in synthetic and natural arsenopyrites FeAsS (Vorontsovka deposit, North Urals, type Carlin). Conditions that favor the formation of Au-bearing arsenopyrite were identified. The synthesis experiments were ca

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