Title: GEOLOGICAL, GEOCHEMICAL AND GENETIC STUDY OF THE SANDAOWANZI QUARTZ VEIN-TYPE GOLD DEPOSIT IN HEIHE CITY, HEILONGJIANG PROVINCE
Abstract: As a typical quartz vein-type gold deposit, Sandaowanzi gold deposit occurs in the andesite of the late Jurassic Tamulan Formation. Results from REE and stable isotopes studies show that the REE distribution patterns for the andesite are similar to those for gold ore bodies, since they are inclined toward right in both cases, and the ∑REE content is reduced gradually. The homogenization degree of δ 34 S values is high, and the distribution is centralized and similar to that for meteoritic sulfur, indicating that the sulfur could be mantle-derived. Lead isotope composition data suggest a very high rate of radiogenic lead and indicate that the ratio of lead isotope in country rocks is similar to those in gold ore bodies. When projected to the lead dynamic evolution curves of the structure model, the samples fall in the area located between the mantle and the orogen. All these characteristics indicate that the source of ore-forming fluid and metallogenic materials are magma-derived hydrothermal fluids or the large-scale eruptive volcanics in the area, and that the deposit was formed in an extensional tectonic setting. Volcanic magma from the deep mantle provided sufficient heat energy for migration and circulation of metallogenic fluids in the ore-forming process.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 6
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