Статья посвящена внутриплитному магматизму Чакылкалянских гор и его потенциальной рудоносности. Рассмотрена на примере пространственного
ISSN: 2776-0979, Volume 3, Issue 4, April., 2022
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ISSN: 2776-0979, Volume 3, Issue 4, April., 2022 169 Table 1 Signs of potential mineralization of rocks of alkaline basaltoids and lamprofir formation Typomorphic characteristics of gold-tungsten mining of the lower tier of the Yachton deposit Geochemical specialization Rock formations of alkaline basaltoids and lamprophyres at the boundary of the yacht area are characterized by the presence of a number of elements (Au, Ag, W, Mo, Se, Te, Bi, As, Sb, Re, Hf) that have higher amounts than clark in virtually all types of dyke products. The geochemical sequence (Te-Se-Au-Bi-As-Ag-Sb-Re-Hf-W- Mo) of the rate of accumulation of basic elements in ore- generating magmatic products of the formation of alkaline basaltoids and lamprophyres indicates that they have geochemical specialization predominant in gold and rare metal mining sufficiently clear. The typomorph Au, W, Bi, Te, As, Ag, Se, Mo, Su, Sb is a geochemical association for gold-tungsten ore of the lower tier of the Yachton deposit. The main minerals of the sulfide part of the ore are pyrite and pyrrhotite. Amount of mixed elements (g/t): in pyrite – Au - 22,9; Ag - 51; , As - >4000; Te - 47; Se - 42; and Bi - 1600; pyrrhotite – Au - 3,5; Ag - 3,5; As - 85; Te - 7,3; Se - 17; and Bi - 400. Mineral- accessor specialization Basic paragenetic mineral association of mineralization The potential mineralization of gold is confirmed by the accumulation of natural gold grains and sawdust found in different rocks of the formation in untouched, unchanged species by metasomatic alteration processes. In addition, xenolites with natural gold carbonated peridotites were detected, as well as pyroxene-porphyry trachybasalts containing brecciated and ultrabasic xenolites. Natural gold is associated with sheelite, molybdenite, cinnabar, magnetite, galena, sphalerite, pyrite, fluorite, chalcopyrite and graphite. The specialization of alkaline basaltoids - rocks of the formation of lamprophyres in tungsten is confirmed by the presence in them, as well as in carbonated pyridotites (xenoliths), the accelerator sheelite. For tungsten - albite-sheelite. For gold - tetradimite-tellurovismutite, gold - silver, gold-hessite and pyrite-arsenopyrite. Mineral forms of gold are natural tellurides in association with natural gold and natural silver, pyrite, pyrrhotite, ores, arsenopyrite. Features of metasomatosis In xenoliths, hyperbasites are characterized by highly carbonated listvenites and are described as a metasomatic type resulting from the treatment of magmatic solution in the deeper parts of the igneous chamber with high-potassium mantle fluids of carbon dioxide. In addition to the high concentration of potassium, the fluid was significantly saturated with gas and water. Integrated siliceous metasomatosis, which brings Ca, Si, Mg, Fe to the periphery. For metasomatites formed along the aluminosilicate substrate, which has several modifications, the constant presence of calcite in practice is characteristic. The presence of thin veins of brownish-black symbolic substance (anthraxolite type), which records the arrival of juvenile carbon in metasomatites. жүктеу/скачать 315,38 Kb. Достарыңызбен бөлісу:
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