Yasny lode-placer cluster: Geological and structural features and gold potential |
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| Authors: | A V Mel’nikov V A Stepanov |
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| Institution: | 1. Institute of Geology and Nature Management, Far East Branch, Russian Academy of Sciences, Relochnyi per. 1, Blagoveshchensk, 675000, Russia
2. Geotechnological Research Center, Far East Branch, Russian Academy of Sciences, Severo-Vostochnoe shosse 30, Petropavlovsk-Kamchatskii, Private Box 56, 683002, Russia
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| Abstract: | The geological and structural features and gold potential of the Yasny lode-placer cluster in Amur province have been investigated. The lode-placer cluster is an intrusive domal uplift elongated in the nearmeridional direction and surrounded by Neogene loose sediments. The cluster comprises placers that yielded 15 t gold mined from there and small occurrences of gold-quartz and gold-base-metal lodes. Association of native gold with cinnabar in the Yasny Creek placer allows us to forecast a new source of gold-mercury mineralization in the basin of this creek, which could be compared with the Kyuchyus deposit in Yakutia. Gold nuggets 79 kg in total weight were mined from Gar-2 River placer. They are comparable in weight and association with quartz to the world’s largest Holtermann Plate nugget from Australia. Gold-quartz lodes have been forecasted in the basin of the Gar-2 Creek. |
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