Adam Piestrzynski - Academia.edu (original) (raw)
Papers by Adam Piestrzynski
Geology, Geophysics and Environment, Sep 21, 2023
Geological mapping and sampling of sediment-hosted copper-silver mineralization in NE Colombia id... more Geological mapping and sampling of sediment-hosted copper-silver mineralization in NE Colombia identified the association of the Astronium graveolens tree (Diomate Gusanero) with the elevated presence of copper (up to 317 ppm) and silver (up to 24 ppm) in plant ash. During the dry season, when most plants lose their leaves, young Astronium graveolens seedlings growing along copper sulfide rich showings retain their green foliage. This observation allowed authors to effectively use this plant as an exploration guide in search for copper mineralization and Astronium graveolens can be potentially considered as a geobotanical indicator plant. The observed resistance of Astronium graveolens to the presence of copper sulfides suggests that this tree could be also a potential excellent species for reforestation and reclamation of tailings and other mining waste.
Problems arising from uranium dispersion from mines and mine tailings, and the remediation of ura... more Problems arising from uranium dispersion from mines and mine tailings, and the remediation of uranium contaminated areas, are discussed in this paper. In an experimental remediation study, a mixture of 70 vol.% of uraniferous mining wastes and 30 vol.% of a natural ceramic were used. The preliminary observations are discussed, and a model is proposed for the long term stabilization of mining tailings. Observations and monitoring of contaminated sites carried out during the last 25 years have revealed local impacts of uranium on the environment in Lower Silesia, Poland. Uranium pollution is limited to waste dumps, mine tailings, and their close vicinities at Kowary Podgórze, Radoniów, Kopaniec and Kletno. Uranium dispersion takes place mechanically due to transport by river waters, chemically by rain and ground waters, and anthropogenically when the wastes are utilized in construction. Floods are an additional mechanism responsible for the mechanical dispersion of uranium. As a result of these uranium transport mechanisms, in order to minimize the impacts of uranium on the environment, the covering of dumps with non-radioactive material is suitable only for sites located away from populated areas. Redox reactions have been observed at the Kowary tailings. During these reactions, iron hydroxide (goethite), hematite, and gypsum, are precipitated as solids. These observations provide a good prognosis for the long-term stabilization of radionuclides which can be incorporated into proposals for the construction of tailings sites. Using Eh-pH diagrams (system U-C-O-H, 25°C, 1 bar), UO2 is stable over the whole range of naturally occurring pHs, and is affected by Eh only in the range −0.4 to +0.1 volts in acidic environments, and below −0.4v in basal environments. BaSO4 and RaSO4 are stable under almost the same conditions as UO2. An environmentally significant redox boundary (FeS2 versus Fe2O3) occurs in the middle of the UO2 stability field. The geochemical and environmental behaviour of the elements discussed above suggest a mechanism for stabilizing radionuclides within stored wastes. The solidification of wastes should occur concurrently with naturally occurring redox reactions. During oxidation, an active iron-hydroxide gel is produced. This gel is then dehydrated and converted into limonite (a mixed compound), a monohydrate (goethite), hydro-hematite (Fe2O3·1/2H2O) and hematite (Fe2O3). This reaction occurs in neutral or weakly acidic environments. A key problem in the proposed remediation project, therefore, is pH stabilization in order to maintain the required environment for oxidation and cementation reactions. In order to achieve such an environment and to stabilize the reactions, a construction method is proposed for new waste storage systems, based on mixed layers of waste and barrier components composed of natural materials. The presence of CaO or Ca(OH)2 and anhydrite in the proposed internal membrane will reduce the vertical migration of sulphates. Redox reactions will be responsible for the secondary precipitation (reduction) of uranyl. These same reactions occur naturally during the precipitation of uranium ores. Iron oxidation is the other process in the redox pair required to reduce [UO2]+2 to UO2. The resultant pitchblende is insoluble in normal oxidizing environments. To minimize the dissolution of UO2 by sulphuric acid generated during the iron oxidation reaction, the construction of pH active membranes containing calcium oxide or hydroxide are recommended. These compounds will react with the free acid to precipitate gypsum. Although several elements can be mobilized as a result of oxidation, radium remains in insoluble solid phases such as the common Ca, Ba and Sr sulphates.
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, Apr 1, 1990
Zechstein copper ore deposits are known to be enriched with trace elements. Some of them. like Ag... more Zechstein copper ore deposits are known to be enriched with trace elements. Some of them. like Ag. Au. Pt. Pd. Se. Hg. MO and Re. are of big economic importance. Trace element data from rock-forming minerals. like carbonates. are useful in studies of the genesis of the deposit. which can aid the exploration strategy. We report here the microanalyses of carbonate minerals made with the use of the Heidelberg proton microprobe. The experimental conditions were: a proton microprobe with a beam spot of ca. 3x3 pm. proton energy 3 MeV and a 195 urn thick external Al absorber. Quantitative results and the detection limits for various elements are reported and compared with the detection limits obtained for different minerals from the same ore deposits, like sulphides and phosphates.
Przegląd Geologiczny, 2001
S u m m a r y. "Mina Pilas" (MSMP) deposit that lies at Cordillera Real 23 km southeast from Riob... more S u m m a r y. "Mina Pilas" (MSMP) deposit that lies at Cordillera Real 23 km southeast from Riobamba (Chimbrorazo province, Equador) has been described as a volcannic hosted massive sulphide (VHMS) deposit. Host rocks are greenstones of the Alao-Paute group comprising andesite-basalt type volcanogenic suite intercalated with metashists composed of plagioclase, chlorite, quartz, muscovite and pyrite. The deposit has been classified as a pyrite-type containing minor copper and gold (361 ppb, in average). Massive and stockwork orebodies contain pyrite, chalcopyrite, bornite, digenite, tetrahedrite, covellite and goethite. Uppermost part of deposit is oxidized. Pyrite ores are not extracted recently because of low gold tenor.
CRC Press eBooks, Apr 28, 2022
Przegląd Geologiczny, 2013
Przegląd Geologiczny, Mar 15, 2018
Study on diversity of Cr spinel composition within the ultramafic massif based on the example of ... more Study on diversity of Cr spinel composition within the ultramafic massif based on the example of SE Kosovo-implications for chromium deposit exploration and beneficiation.
Clay minerals saturated with metal ions (Cu, Pb, Cd, Zn, Tl, Ag, Hg) were treated by aqueous H2S ... more Clay minerals saturated with metal ions (Cu, Pb, Cd, Zn, Tl, Ag, Hg) were treated by aqueous H2S solutions under controlled Eh and pH conditions. The heavy metal ions were released and precipitated at 80 °C as sulphides and in most cases appeared to be crystalline. They often formed coatings or crystals overgrown on clay minerals or formed tight intergrowths
Bulletin of the Polish academy of sciences. Earth sciences, 1999
Mineralium Deposita, 1989
Replacement of dolomite rhombs is zone selective in Cracow-Silesian Zn-Pb deposits. The discussed... more Replacement of dolomite rhombs is zone selective in Cracow-Silesian Zn-Pb deposits. The discussed replacement of dolomite by sphalerite occurs as spotted sphalerite ore constituting about one-fourth of the economic sulfide mineralization of the Pomorzany Mine. Replacement is controlled by two factors, i.e., microporosity and chemical composition. The epigenetic host dolomite rhombs are zoned into three main zones, i.e., the outer rhombohedral rim which is hard and Fe rich with remarkable Zn content, the inner zone which is porous and Zn rich but usually low in Fe content, and the core of the dolomite rhombs which is Fe free but may contain some Zn. Zones rich in Zn were the first to be replaced by sphalerite; the same holds true for zones with higher microporosity showing a high degree of crystallographic disorder of cations. The other zones seem to be intact. There are four successive replacement stages, i.e., partial, moderate, intense, and advanced. During replacement the intact parts become more Zn-rich, consequently being replaced completely in the later stages, the greater the zinc content in the host dolomite is, the more reactive it is to replacement by sphalerite. The liberated iron from replaced Fe-rich zones is fixed as finely crystalline pyrite.
Górnictwo i Geoinżynieria, 2006
Ze względów technologicznych rudy molibdenu można podzielić na rudy o niskiej i wysokiej zawartoś... more Ze względów technologicznych rudy molibdenu można podzielić na rudy o niskiej i wysokiej zawartości siarczków miedzi i żelaza. Złoże rudy molibdenowej Myszków charakteryzuje się wysoką zmiennością okruszcowania. Szacunkowe zasoby przemysłowe metali wynoszą: molibdenu 140 000 Mg, miedzi 85 000 Mg i 45 000 Mg wolframu. Biorąc pod uwagę obecne bardzo wysokie ceny tych metali na rynkach światowych perspektywa podjęcia prac nad zagospodarowaniem tego złoża staje się coraz bardziej realna. 2. Geneza i opis złoża
A.A. Balkema eBooks, 2001
The Joint 6th Biennial SGA-SEG Meeting was held in Krakow in August 2001. This volume contains 27... more The Joint 6th Biennial SGA-SEG Meeting was held in Krakow in August 2001. This volume contains 274 extended abstracts, grouped thematically under 18 session titles covering topics such as lead-zinc deposits; metamorphism affecting mineral deposits; and the environmental aspects of mining.
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie, 2001
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, Apr 1, 1990
Micro-PIXE analyses made, using the Heidelberg proton microprobe, of thucholite-like organic matt... more Micro-PIXE analyses made, using the Heidelberg proton microprobe, of thucholite-like organic matter and noble metals bearing shale matrices from the Lower Zechstein copper deposits of the Fore-Sudetic Monocline (Poland) are reported. The experimental conditions included a proton microbeam with a beam spot of-3 x 3 am, 3 MeV proton energy and a 195 urn thick external Al absorber. Quantitative results and the detection limits for various elements are reported.
Przegląd Geologiczny, 1996
Geological Quarterly, Jun 6, 2018
As so ci ate ed i tor: S³awomir Oszczepalski Cupropearceite is a sulphosalt be long ing to the pe... more As so ci ate ed i tor: S³awomir Oszczepalski Cupropearceite is a sulphosalt be long ing to the pearceite-polybasite group, formed due to Cu-for-Ag sub sti tu tion. It is a rare min eral of the Earth's crust, de scribed only in four lo ca tions so far. This work re ports the oc cur rence of cupropearceite in the up per part of the Weissliegend sand stone from the Cu-Ag de posit in the Fore-Sudetic Monocline. The min eral is as so ci ated with stromeyerite, bornite, chalcocite, na tive sil ver, sil ver amal gams and, rarely, py rite. For ma tion of cupropearceite is related to fluid ac tiv ity dur ing low-tem per a ture hy dro ther mal events re spon si ble for the for ma tion of the Cu-Ag ore min er alization. The iden ti fi ca tion of cupropearceite is im por tant in terms of con strain ing min er als bear ing as so ci ated met als, par tic u larly Ag and As. This work also pres ents oc cur rence of this rare min eral in the pre vi ously un noted min eral as sem blage men tioned above. The pres ence of cupropearceite con firms a low-tem per a ture, hy dro ther mal or i gin of the Cu-Ag de posit in the Fore-Sudetic Monocline.
Biuletyn Państwowego Instytutu Geologicznego, 2010
W latach 2007-2009 przeprowadzono w Mongolii szereg badañ terenowych, maj¹cych na celu poszukiwan... more W latach 2007-2009 przeprowadzono w Mongolii szereg badañ terenowych, maj¹cych na celu poszukiwanie z³ó¿ surowców metalicznych. £¹cznie spenetrowano piêae ró¿nych obszarów, z których jeden znajdowa³ siê na wschód od stolicy, a pozosta³e w zachodniej czêoeci Centralnej Mongolii (województwo Bayankhongor). Prace polowe polega³y na identyfikacji obiektów geologicznych, wstêpnej weryfikacji ods³oniêae przydatnych do oceny surowcowej badanych obszarów oraz na pobraniu próbek szlichowych, bruzdowych i mineralogicznych. W wielu miejscach stwierdzono obecnooeae utlenionych minera³ów miedzi, a w jednym-bogat¹ w siarczki wychodniê silnie okwarcowanych ska³. Na obszarze oznaczonym jako M2, stwierdzono równie¿ obecnooeae stref zawieraj¹cych okruszcowanie typu Ni-Cu w serpentynitach. Analizy chemiczne potwierdzi³y trafnooeae wyboru miejsc do dalszych badañ. Ocenie z³o¿owej poddano równie¿ dokumentowane wczeoeniej z³o¿e W-Sn-Mo Bayantsogt-Tubszin i z³o¿e ¿y³owe z³ota Tsagaan Tsakhir Uul.
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie, 2009
Pobu¿e area is a perspective for different mineral commodities. In this area, several genetically... more Pobu¿e area is a perspective for different mineral commodities. In this area, several genetically different deposits have been identified. In the Kapitanowski Massif chromites and Ni-silicate deposits occur. Tarasowskie Zr-Ti deposit is one of the biggest the alluvial deposit in Ukraina. Maiskoje, Au-deposit is more interesting within 21 targets discovered. Zawalje graphite deposit is a world class.
Geology, Geophysics and Environment, Sep 21, 2023
Geological mapping and sampling of sediment-hosted copper-silver mineralization in NE Colombia id... more Geological mapping and sampling of sediment-hosted copper-silver mineralization in NE Colombia identified the association of the Astronium graveolens tree (Diomate Gusanero) with the elevated presence of copper (up to 317 ppm) and silver (up to 24 ppm) in plant ash. During the dry season, when most plants lose their leaves, young Astronium graveolens seedlings growing along copper sulfide rich showings retain their green foliage. This observation allowed authors to effectively use this plant as an exploration guide in search for copper mineralization and Astronium graveolens can be potentially considered as a geobotanical indicator plant. The observed resistance of Astronium graveolens to the presence of copper sulfides suggests that this tree could be also a potential excellent species for reforestation and reclamation of tailings and other mining waste.
Problems arising from uranium dispersion from mines and mine tailings, and the remediation of ura... more Problems arising from uranium dispersion from mines and mine tailings, and the remediation of uranium contaminated areas, are discussed in this paper. In an experimental remediation study, a mixture of 70 vol.% of uraniferous mining wastes and 30 vol.% of a natural ceramic were used. The preliminary observations are discussed, and a model is proposed for the long term stabilization of mining tailings. Observations and monitoring of contaminated sites carried out during the last 25 years have revealed local impacts of uranium on the environment in Lower Silesia, Poland. Uranium pollution is limited to waste dumps, mine tailings, and their close vicinities at Kowary Podgórze, Radoniów, Kopaniec and Kletno. Uranium dispersion takes place mechanically due to transport by river waters, chemically by rain and ground waters, and anthropogenically when the wastes are utilized in construction. Floods are an additional mechanism responsible for the mechanical dispersion of uranium. As a result of these uranium transport mechanisms, in order to minimize the impacts of uranium on the environment, the covering of dumps with non-radioactive material is suitable only for sites located away from populated areas. Redox reactions have been observed at the Kowary tailings. During these reactions, iron hydroxide (goethite), hematite, and gypsum, are precipitated as solids. These observations provide a good prognosis for the long-term stabilization of radionuclides which can be incorporated into proposals for the construction of tailings sites. Using Eh-pH diagrams (system U-C-O-H, 25°C, 1 bar), UO2 is stable over the whole range of naturally occurring pHs, and is affected by Eh only in the range −0.4 to +0.1 volts in acidic environments, and below −0.4v in basal environments. BaSO4 and RaSO4 are stable under almost the same conditions as UO2. An environmentally significant redox boundary (FeS2 versus Fe2O3) occurs in the middle of the UO2 stability field. The geochemical and environmental behaviour of the elements discussed above suggest a mechanism for stabilizing radionuclides within stored wastes. The solidification of wastes should occur concurrently with naturally occurring redox reactions. During oxidation, an active iron-hydroxide gel is produced. This gel is then dehydrated and converted into limonite (a mixed compound), a monohydrate (goethite), hydro-hematite (Fe2O3·1/2H2O) and hematite (Fe2O3). This reaction occurs in neutral or weakly acidic environments. A key problem in the proposed remediation project, therefore, is pH stabilization in order to maintain the required environment for oxidation and cementation reactions. In order to achieve such an environment and to stabilize the reactions, a construction method is proposed for new waste storage systems, based on mixed layers of waste and barrier components composed of natural materials. The presence of CaO or Ca(OH)2 and anhydrite in the proposed internal membrane will reduce the vertical migration of sulphates. Redox reactions will be responsible for the secondary precipitation (reduction) of uranyl. These same reactions occur naturally during the precipitation of uranium ores. Iron oxidation is the other process in the redox pair required to reduce [UO2]+2 to UO2. The resultant pitchblende is insoluble in normal oxidizing environments. To minimize the dissolution of UO2 by sulphuric acid generated during the iron oxidation reaction, the construction of pH active membranes containing calcium oxide or hydroxide are recommended. These compounds will react with the free acid to precipitate gypsum. Although several elements can be mobilized as a result of oxidation, radium remains in insoluble solid phases such as the common Ca, Ba and Sr sulphates.
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, Apr 1, 1990
Zechstein copper ore deposits are known to be enriched with trace elements. Some of them. like Ag... more Zechstein copper ore deposits are known to be enriched with trace elements. Some of them. like Ag. Au. Pt. Pd. Se. Hg. MO and Re. are of big economic importance. Trace element data from rock-forming minerals. like carbonates. are useful in studies of the genesis of the deposit. which can aid the exploration strategy. We report here the microanalyses of carbonate minerals made with the use of the Heidelberg proton microprobe. The experimental conditions were: a proton microprobe with a beam spot of ca. 3x3 pm. proton energy 3 MeV and a 195 urn thick external Al absorber. Quantitative results and the detection limits for various elements are reported and compared with the detection limits obtained for different minerals from the same ore deposits, like sulphides and phosphates.
Przegląd Geologiczny, 2001
S u m m a r y. "Mina Pilas" (MSMP) deposit that lies at Cordillera Real 23 km southeast from Riob... more S u m m a r y. "Mina Pilas" (MSMP) deposit that lies at Cordillera Real 23 km southeast from Riobamba (Chimbrorazo province, Equador) has been described as a volcannic hosted massive sulphide (VHMS) deposit. Host rocks are greenstones of the Alao-Paute group comprising andesite-basalt type volcanogenic suite intercalated with metashists composed of plagioclase, chlorite, quartz, muscovite and pyrite. The deposit has been classified as a pyrite-type containing minor copper and gold (361 ppb, in average). Massive and stockwork orebodies contain pyrite, chalcopyrite, bornite, digenite, tetrahedrite, covellite and goethite. Uppermost part of deposit is oxidized. Pyrite ores are not extracted recently because of low gold tenor.
CRC Press eBooks, Apr 28, 2022
Przegląd Geologiczny, 2013
Przegląd Geologiczny, Mar 15, 2018
Study on diversity of Cr spinel composition within the ultramafic massif based on the example of ... more Study on diversity of Cr spinel composition within the ultramafic massif based on the example of SE Kosovo-implications for chromium deposit exploration and beneficiation.
Clay minerals saturated with metal ions (Cu, Pb, Cd, Zn, Tl, Ag, Hg) were treated by aqueous H2S ... more Clay minerals saturated with metal ions (Cu, Pb, Cd, Zn, Tl, Ag, Hg) were treated by aqueous H2S solutions under controlled Eh and pH conditions. The heavy metal ions were released and precipitated at 80 °C as sulphides and in most cases appeared to be crystalline. They often formed coatings or crystals overgrown on clay minerals or formed tight intergrowths
Bulletin of the Polish academy of sciences. Earth sciences, 1999
Mineralium Deposita, 1989
Replacement of dolomite rhombs is zone selective in Cracow-Silesian Zn-Pb deposits. The discussed... more Replacement of dolomite rhombs is zone selective in Cracow-Silesian Zn-Pb deposits. The discussed replacement of dolomite by sphalerite occurs as spotted sphalerite ore constituting about one-fourth of the economic sulfide mineralization of the Pomorzany Mine. Replacement is controlled by two factors, i.e., microporosity and chemical composition. The epigenetic host dolomite rhombs are zoned into three main zones, i.e., the outer rhombohedral rim which is hard and Fe rich with remarkable Zn content, the inner zone which is porous and Zn rich but usually low in Fe content, and the core of the dolomite rhombs which is Fe free but may contain some Zn. Zones rich in Zn were the first to be replaced by sphalerite; the same holds true for zones with higher microporosity showing a high degree of crystallographic disorder of cations. The other zones seem to be intact. There are four successive replacement stages, i.e., partial, moderate, intense, and advanced. During replacement the intact parts become more Zn-rich, consequently being replaced completely in the later stages, the greater the zinc content in the host dolomite is, the more reactive it is to replacement by sphalerite. The liberated iron from replaced Fe-rich zones is fixed as finely crystalline pyrite.
Górnictwo i Geoinżynieria, 2006
Ze względów technologicznych rudy molibdenu można podzielić na rudy o niskiej i wysokiej zawartoś... more Ze względów technologicznych rudy molibdenu można podzielić na rudy o niskiej i wysokiej zawartości siarczków miedzi i żelaza. Złoże rudy molibdenowej Myszków charakteryzuje się wysoką zmiennością okruszcowania. Szacunkowe zasoby przemysłowe metali wynoszą: molibdenu 140 000 Mg, miedzi 85 000 Mg i 45 000 Mg wolframu. Biorąc pod uwagę obecne bardzo wysokie ceny tych metali na rynkach światowych perspektywa podjęcia prac nad zagospodarowaniem tego złoża staje się coraz bardziej realna. 2. Geneza i opis złoża
A.A. Balkema eBooks, 2001
The Joint 6th Biennial SGA-SEG Meeting was held in Krakow in August 2001. This volume contains 27... more The Joint 6th Biennial SGA-SEG Meeting was held in Krakow in August 2001. This volume contains 274 extended abstracts, grouped thematically under 18 session titles covering topics such as lead-zinc deposits; metamorphism affecting mineral deposits; and the environmental aspects of mining.
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie, 2001
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, Apr 1, 1990
Micro-PIXE analyses made, using the Heidelberg proton microprobe, of thucholite-like organic matt... more Micro-PIXE analyses made, using the Heidelberg proton microprobe, of thucholite-like organic matter and noble metals bearing shale matrices from the Lower Zechstein copper deposits of the Fore-Sudetic Monocline (Poland) are reported. The experimental conditions included a proton microbeam with a beam spot of-3 x 3 am, 3 MeV proton energy and a 195 urn thick external Al absorber. Quantitative results and the detection limits for various elements are reported.
Przegląd Geologiczny, 1996
Geological Quarterly, Jun 6, 2018
As so ci ate ed i tor: S³awomir Oszczepalski Cupropearceite is a sulphosalt be long ing to the pe... more As so ci ate ed i tor: S³awomir Oszczepalski Cupropearceite is a sulphosalt be long ing to the pearceite-polybasite group, formed due to Cu-for-Ag sub sti tu tion. It is a rare min eral of the Earth's crust, de scribed only in four lo ca tions so far. This work re ports the oc cur rence of cupropearceite in the up per part of the Weissliegend sand stone from the Cu-Ag de posit in the Fore-Sudetic Monocline. The min eral is as so ci ated with stromeyerite, bornite, chalcocite, na tive sil ver, sil ver amal gams and, rarely, py rite. For ma tion of cupropearceite is related to fluid ac tiv ity dur ing low-tem per a ture hy dro ther mal events re spon si ble for the for ma tion of the Cu-Ag ore min er alization. The iden ti fi ca tion of cupropearceite is im por tant in terms of con strain ing min er als bear ing as so ci ated met als, par tic u larly Ag and As. This work also pres ents oc cur rence of this rare min eral in the pre vi ously un noted min eral as sem blage men tioned above. The pres ence of cupropearceite con firms a low-tem per a ture, hy dro ther mal or i gin of the Cu-Ag de posit in the Fore-Sudetic Monocline.
Biuletyn Państwowego Instytutu Geologicznego, 2010
W latach 2007-2009 przeprowadzono w Mongolii szereg badañ terenowych, maj¹cych na celu poszukiwan... more W latach 2007-2009 przeprowadzono w Mongolii szereg badañ terenowych, maj¹cych na celu poszukiwanie z³ó¿ surowców metalicznych. £¹cznie spenetrowano piêae ró¿nych obszarów, z których jeden znajdowa³ siê na wschód od stolicy, a pozosta³e w zachodniej czêoeci Centralnej Mongolii (województwo Bayankhongor). Prace polowe polega³y na identyfikacji obiektów geologicznych, wstêpnej weryfikacji ods³oniêae przydatnych do oceny surowcowej badanych obszarów oraz na pobraniu próbek szlichowych, bruzdowych i mineralogicznych. W wielu miejscach stwierdzono obecnooeae utlenionych minera³ów miedzi, a w jednym-bogat¹ w siarczki wychodniê silnie okwarcowanych ska³. Na obszarze oznaczonym jako M2, stwierdzono równie¿ obecnooeae stref zawieraj¹cych okruszcowanie typu Ni-Cu w serpentynitach. Analizy chemiczne potwierdzi³y trafnooeae wyboru miejsc do dalszych badañ. Ocenie z³o¿owej poddano równie¿ dokumentowane wczeoeniej z³o¿e W-Sn-Mo Bayantsogt-Tubszin i z³o¿e ¿y³owe z³ota Tsagaan Tsakhir Uul.
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie, 2009
Pobu¿e area is a perspective for different mineral commodities. In this area, several genetically... more Pobu¿e area is a perspective for different mineral commodities. In this area, several genetically different deposits have been identified. In the Kapitanowski Massif chromites and Ni-silicate deposits occur. Tarasowskie Zr-Ti deposit is one of the biggest the alluvial deposit in Ukraina. Maiskoje, Au-deposit is more interesting within 21 targets discovered. Zawalje graphite deposit is a world class.