Scholarly record
NATURAL NANOTECHNOLOGIES IN GOLD MINING
Abstract
The processes of nanogold deposition and concentration in the environment, which have been occurring with enlargement of metal grain size, may be considered as the natural nanotechnologies. The mechanisms of nanogold concentrations in geological objects are established and described on the example of many deposits in Russia (the Urals, Siberia) and abroad (Canada). They produce different morphological and chemical aggregations of gold nanoparticles. Among them variable growths on the placer metal surface, globular, biomorphic gold, and aggregates of many-compound mixtures of ferriferous, siliceous or aluminous substances with nanogold are presented. The methods of highresolution electron microscopy give the opportunity to reveal the proofs of manyleveled structure of these formations. The functioning of natural nanotechnologies in a number of gold deposits has been already providing an increase in gold reserves. The detailed analysis of such processes is needed for working out of new technologies for gold mining, especially for deposits with refractory ores. The results of experimental works are useful for decision of this problem, too.
Publication Impact Profile
Publication details
References10
Dexter-Dyer, B., Kretzschmer, M., Krumbein, N.E., Possible microbial pathways in the formation of Precambrian ore deposits, J. Geol. Soc., vol. 141, 1984, pp. 251-262.
Shui, He Mao, Occurrence and distribution of invisible gold in a Carlin-type gold deposit in China, Amer. Miner., vol. 76/no 11-12, 1991, pp. 1964-1972.
Palenik, C.S., Utsunomiya, S., Reich, M., Kesler, S.E., Wang, L., “Invisible” gold revealed: Direct imaging of gold nanoparticles in a Carlin-type deposit, Amer. Mineral, vol. 83, 2004, pp. 1359-1366.
Hough, R.M., Noble, R.R.P., Hitchen, G.J., Hart, R.D., Reddy, S.M., Saunders, M., Clode, P.L., Vaughan, D., Lowe, J., Gray, D.J., Anand, R.R., Butt, C.R.M., Verrall, M., Naturally occurring gold nanoparticles and nanoplates, Geology, vol. 36/no 7, 2008, pp. 571-574.
Freise, F.W., The transportation of gold by organic solutions, Econ. Geol., vol. 26, 1931, pp. 412-431.
Osovetsky, B.M., Aggregation of Nanogold Particles in the Environment, Natural Resources Research, vol. 25/no 2, 2016, pp. 241-253.
Daniel, M.C., Astruc, D., Gold nanoparticles: assembly, supermolecular chemistry, quantum-size-related properties, and applications towards biology, catalysis, and nano-technology, Chem. Rev., vol. 104, 2004, pp. 293-345.
Kuyucak, N., Volesky, B., Accumulation of gold by algal biosorbents, Biorecovery, vol. 1, 1989, pp. 189-204.
Lengke, M.F., Southam, G., Bioaccumulation of gold by sulfate-reducing bacteria cultured in the presence of gold (I)-thiosulfate complex, Geochim. et Cosmochim. Acta, vol. 70, 2006, pp. 3646-3661.
Arehart, G.B., Chryssoulis, S.L., Kesler, S.E., Gold and arsenic in iron sulfides from sediment-hosted dissiminated gold deposits: Implication for depositional process-es, Econ. Geol., vol. 88/no 1, 1993, pp. 171-185.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
