Research On Metallogenic Condition And Regularity Of Laohetu And Shijiazi In Fuxin Area

Geological survey in the field and on a typical mine, mineralization studies,based on the study area from the Yixian Formation is divided into four cycles, thefour lithologic, detailing the four lithologic geologic features: each a volcaniceruption cycle of the lower part of the outbreak of the phase composition of rocks,lava in the upper part of the phase composition of the overflow; mainly basalt lavatypes, basaltic andesite, andesite and some dacite, rhyolite, trachyandesite; theeruption cycles within cycles and different eruptions, with lava acidic or alkalinelevel up gradually increase the overall variation. Coverage of the study area of theYixian Formation and secretion of the body like agate agate type fracture fillingthe geological features of the former further divided according to the nature of rock:basalt and basaltic andesite in the secretion of the body like agate, andesite in thesecretion of the body like agate, the weathering-the transformation of secondaryenrichment-type deposition agate; the latter further divided into: basalt, fracturefilling vein agate type volcanic rocks in the fracture filling vein type agate,andesitic porphyry-type veins in fracture filling agate. And found that these twotypes of agate type with a clear layer of control, the main development of theYixian Formation eruption cycles Ⅰ, Ⅱ in.Two kinds of genetic types of agate byhydrothermal mineralization and supply of the chemical composition and crystallization rates, rock properties and structure, the eruption cycle and rocktypes of ore-control, and analyze and summarize the agate-forming regularity.Finally, the vision and the resources of agate exploration targets, and keyexploration target layer is preliminary understanding of the election.