Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan)
The article provides a brief geological description of the Southern Ashaly mineral deposit within which ores of the gold-sulfide and gold-low-sulfide-quartz types were recognized. Two ore mineralization phases were established, that incorporate four stages, the pyrite, pyrite-arsenopyrite, sulfide,...
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Central Research Institute of Geological Prospecting for Base and Precious Metals (TsNIGRI)
2024-12-01
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| Series: | Руды и металлы |
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| Online Access: | https://rm.tsnigri.ru/index.php/main/article/view/249 |
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| author | Greku E. D. Kalinin Yu. A. Serdyukov A. N. Naumov E. A. Borovikov A. A. Ragozin A. L. Gladkov A. S. |
| author_facet | Greku E. D. Kalinin Yu. A. Serdyukov A. N. Naumov E. A. Borovikov A. A. Ragozin A. L. Gladkov A. S. |
| author_sort | Greku E. D. |
| collection | DOAJ |
| description | The article provides a brief geological description of the Southern Ashaly mineral deposit within which ores of the gold-sulfide and gold-low-sulfide-quartz types were recognized. Two ore mineralization phases were established, that incorporate four stages, the pyrite, pyrite-arsenopyrite, sulfide,
and polymetallic ones. The morphological and mineralogical-geochemical features of the major, minor, and rare ore minerals were studied in detail. The following successive generations of pyrite were established at the deposit: diagenetic, metamorphic, and hydrothermal, that embrace six varieties with its own geochemical features. Elevated concentrations of gold in diagenetic pyrite have been recorded and visually confirmed. Native gold of two generations is formed at the pyrite, pyrite-arsenopyrite (early), and sulfide (late) stages and have an average gold fineness of 884 and 998 ‰, respectively. The temperature of transformation of the carbonaceous matter of rocks of the Bukon Formation and of generation of the ores of the gold-sulfide type varies from 384 to 241 °C, which corresponds to the greenschist-zeolite facies of metamorphism. |
| format | Article |
| id | doaj-art-f6b9384b005043899453f098bad77614 |
| institution | Kabale University |
| issn | 0869-5997 2782-554X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Central Research Institute of Geological Prospecting for Base and Precious Metals (TsNIGRI) |
| record_format | Article |
| series | Руды и металлы |
| spelling | doaj-art-f6b9384b005043899453f098bad776142025-02-05T08:50:59ZengCentral Research Institute of Geological Prospecting for Base and Precious Metals (TsNIGRI)Руды и металлы0869-59972782-554X2024-12-01453610.47765/0869-5997-2024-10016Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan)Greku E. D.0Kalinin Yu. A.1Serdyukov A. N.2Naumov E. A.3Borovikov A. A.4Ragozin A. L.5Gladkov A. S.6Sobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, RussiaSobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, RussiK-PLACER LLP, Semey, Republic of KazakhstanCentral Research Institute of Geological Prospecting for Base and Precious Metals, Moscow, RussiaSobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, RussiaSobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, RussiaInstitute of the Earth's Crust, SB RAS, Irkutsk, RussiaThe article provides a brief geological description of the Southern Ashaly mineral deposit within which ores of the gold-sulfide and gold-low-sulfide-quartz types were recognized. Two ore mineralization phases were established, that incorporate four stages, the pyrite, pyrite-arsenopyrite, sulfide, and polymetallic ones. The morphological and mineralogical-geochemical features of the major, minor, and rare ore minerals were studied in detail. The following successive generations of pyrite were established at the deposit: diagenetic, metamorphic, and hydrothermal, that embrace six varieties with its own geochemical features. Elevated concentrations of gold in diagenetic pyrite have been recorded and visually confirmed. Native gold of two generations is formed at the pyrite, pyrite-arsenopyrite (early), and sulfide (late) stages and have an average gold fineness of 884 and 998 ‰, respectively. The temperature of transformation of the carbonaceous matter of rocks of the Bukon Formation and of generation of the ores of the gold-sulfide type varies from 384 to 241 °C, which corresponds to the greenschist-zeolite facies of metamorphism.https://rm.tsnigri.ru/index.php/main/article/view/249east kazakhstanwest kalba gold-bearing beltore mineralogymicroelement composition of pyrite and arsenopyritela-icp-ms analytical technique |
| spellingShingle | Greku E. D. Kalinin Yu. A. Serdyukov A. N. Naumov E. A. Borovikov A. A. Ragozin A. L. Gladkov A. S. Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan) Руды и металлы east kazakhstan west kalba gold-bearing belt ore mineralogy microelement composition of pyrite and arsenopyrite la-icp-ms analytical technique |
| title | Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan) |
| title_full | Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan) |
| title_fullStr | Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan) |
| title_full_unstemmed | Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan) |
| title_short | Mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the Southern Ashaly gold deposit (East Kazakhstan) |
| title_sort | mineralogical and geochemical peculiarities and gold content of pyrite and arsenopyrite of the southern ashaly gold deposit east kazakhstan |
| topic | east kazakhstan west kalba gold-bearing belt ore mineralogy microelement composition of pyrite and arsenopyrite la-icp-ms analytical technique |
| url | https://rm.tsnigri.ru/index.php/main/article/view/249 |
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