| Article |
|---|
| Article name |
Geological and mineralogical characteristics of the kruchininsky placer as a basis for gold recovery technology development |
| Authors |
Sekisov A.. , Trubachev A.I. , Salikhov S.S. , Lavrov A.Y. , Rubtsov Y.I. , Shevchenko Y.S. , |
| Bibliographic description |
|
| Category |
Earth science |
| DOI |
25.00.11 |
| DOI |
10.21209/2227-9245-2018-24-8-29-38 |
| Article type |
scientific |
| Annotation |
The topicality of research is dictated by the need to continue mining operations on the oldest field on account of determining and extracting new forms of gold.
The following research methods were used: field observations of the deposit, sampling various types of placers, sample handling with photo-electroactive solutions, detecting the presence of gold by “special assay test”, chemical, atomic absorption and assay tests.
The main geological and mineralogical features of the deposit are determined: parameters, morphological and genetic types of placers, geochemical associations of the elements, morphology and distribution of gold, forms of its location. It was established that in placers, in addition to “visible” gold (small, microscopic), there are “invisible” forms of it, which share in the fields of the Far East accounts for 30...60 % of all reserves. Gold nanoparticles were detected in limonite, native metals (Ag, Cu, Pb, Fe) and kaolinite. Using the “special assay analysis” proved the presence of dispersed gold in the sand and waste of the field.
Based on the results of these analytical studies, it was shown that in fractions larger than + 0,5 mm, dispersed gold is present in non-industrial concentrations (less than 0,1 g/t) and in fractions of the 0,25 mm range, represented mainly by small particles of ferruginous quartz and chalcedony and clayey particles, the gold content was from 0,25 to 4,7 g/t. It was proved the presence of disperse gold in the sands of placers in all sections of the Kruchininskoye deposit. A new geotechnology of gold extraction has been proposed, comprising borehole leaching with the use of highly active solutions pumped into productive strata in accordance with the system of injection and extraction wells and subsequent sorption of gold with sorbents.
The method proposed to determine presence of gold and its extraction technology can be applied when developing numerous placers of Transbaikalia and other regions of Russia
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| Key words |
Key words: placer; parameters; morphology; minerals content of concentrate; visible gold; dispersed gold; granulometry; extraction; special assay test; borehole leaching |
| Article information |
Sekisov A., Trubachev A., Salikhov V., Lavrov A., Rubtsov Yu., Shevchenko Yu. GEOLOGICAL AND MINERALOGICAL CHARACTERISTICS OF THE KRUCHININSKY PLACER AS A BASIS FOR GOLD RECOVERY TECHNOLOGY DE-VELOPMENT // Transbaikal State University Journal, 2018, vol. 24, no. 8, pp. |
| References |
1. Моисеенко В. Г., Кузнецова И. В. Роль наночастиц золота, серебра и свинца в образовании месторождений благородных металлов // Докл. РАН. 2010. Т. 430, № 3. С. 377–381.
2. Новгородова М. И., Боронихин В. А., Генералов М. Е., Крамер Е. О самородном кремнии в ассоциации с самородным золотом и другими металлами // Докл. Академии наук СССР. 1989. Т. 309, № 5. С. 1182–1185.
3. Юргенсон Г. А. О возможном коренном источнике Кручининских золотоносных россыпей (Центральное Забайкалье) // Природные ресурсы Забайкалья и проблемы геосферных исследований: материалы науч. конф. Чита: ЗабГГПУ, 2006. С. 127–129.
4. Boboev I. R., Bobozoda Sh., Strizhko L. S. Leaching stubborn oxidized gold ores that contain copper // Metallurgist. 2016. Vol. 59, No. 9-10. P. 959–963.
5. Chamberlin P. D. Status of heap, dump and in-Situ leaching оf gold and silver // Gold Forum of Technology and Practices, World Gold. Littleton, 1989. P. 225–232.
6. Çolakoğlu A. R., Oruç M., Arehart G. B., Poulson S. Geology and isotope geochemistry (C–O–S) of the Diyadin gold deposit, Eastern Turkey: a newly-discovered Carlin-like deposit // Ore Geology Reviews. 2011. Vol. 40, No. 1. P. 27–40.
7. Heap Leaching // Innovations in Gold and Silver Recovery. USA: Randol Int. Ltd, 1992. Vol. 8. P. 4571–4572.
8. In-Situ Leaching (ICL) // Innovations in Gold and Silver Recovery. USA: RandolInt. Ltd., 1992. Vol. 3. P. 1329–1336.
9. Mohr F. Gold chemistry: applications and future directions in the life sciences. Berlin: Wiley-VCH, 2009. 424 p.
10. Wang Z. W., Palmer R. E. Direct atomic imaging and dynamical fluctuations of the tetrahedral Au-20 cluster // Nanoscale. 2012. Vol. 4, No. 16. P. 4947–494.
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