The iron ore deposits of Cuadrilatero Ferrifero de San Isidro represent the largest iron ore reserves in Venezuela. The district is a part of the iron metallogenic province of northern Guayana, one of the richest iron-bearing regions of the world. All presently known iron ore deposits of ...
The Zenith mine, at Ely in the Vermilion iron district of Minnesota,yielded about 21 million tons of high grade iron ore before closing in 1962. Theore that was mined consisted of massive crystalline hematite, brecciated andcemented by a later generation of crystalline hematite. The deposits are...
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Hadean mantle oxidation inferred from melting of peridotite under lower-mantle conditions The early Earth’s mantle rapidly oxidized during the Hadean because of iron disproportionation and core segregation, according to experiments melting peridotite under deep-mantle conditions. ...
In situ elemental and sulfur isotopic variations of Au-bearing iron–sulfides from the Alin Au deposit in the Shuixie Cu–Co Orefield, western Yunnan Province, SE Tibet: Insights into enrichment processes of invisible Au Guo Li, ... AiYing Wei ...
In situ elemental and sulfur isotopic variations of Au-bearing iron–sulfides from the Alin Au deposit in the Shuixie Cu–Co Orefield, western Yunnan Province, SE Tibet: Insights into enrichment processes of invisible Au Guo Li, ... AiYing Wei ...
Many diverse ore systems are classified together as iron oxide copper-gold (lOCG) deposits based on an empirical definition arising primarily from geochemical features that do not specify tectonic setting, geologic environment, or sources of ore-forming fluid, metals, or other ore components. Such...
The Chin-qua-shih Mine is one of the large metal mines in northeastern Taiwan. Geologically the Chin-qua-shih area is composed of sedimentary rocks of Neogene Tertiary and dacite intruding the former. The Cin-qua-shih Mine ore deposits are found in these rocks and consist of gold, silver ...
The iron oxide–apatite deposits in the Tarom area of the Zanjan district are typical of a magmatic–hydrothermal origin and are similar to the Kiruna-type deposits with respect to mineral assemblages, fabric and structure of the iron ores, occurrence of the ore bodies, and wall rock alteration...
Geology, mineralogy and evolution of iron skarn deposits in the Zanjan district, NW Iran: Constraints from U-Pb dating, Hf and O isotope analyses of zircons and stable isotope geochemistry Ghasem Nabatian, Xian-Hua Li, Maryam Honarmand, Joan Carles Melgarejo ...