The hypothetical FHQ buffer was suggested by Giggenbach (1987) as a “non-specific” redox buffer containing fayalite as a proxy for Fe 2+ and hematite as a proxy for Fe 3+. It is intended …

In geology, a redox buffer is an assemblage of minerals or compounds that constrains oxygen fugacity as a function of temperature. Knowledge of the redox conditions (or equivalently, …

比如，在800℃，IW线上垂直做竖直线的交点对应横坐标的值即为对应的lgfO2的值，就是buffer在这一温度下的绝对痒逸度的值。 如果，我是说如果，这个时候已知测得的实际的绝对氧逸度 …

Calculate fO2 Buffer. Excel spreadsheet. Tool to calculate oxygen fugacity in terms of the common buffers when logfO2 is known or for translating between fO2 values expressed in …

2019年4月23日 · Oxygen fugacity (f O 2) is a fundamental thermodynamic property governing redox potential in solid Earth systems. Analysis of magmatic f O 2 aids our understanding of …

2013年5月29日 · The tool Calculate fO2 Buffer allows you to determine the “delta” of a several oxygen fugacity buffers (for example: ΔNNO, ΔQFM, etc.) when the value of logfO2 is known. …

Oxygen fugacity (fO2) controls multivalent phase equilibria and partitioning of redox-sensitive elements, and it is important to understand this thermodynamic parameter in experimental and …

2018年3月9日 · 从自然铁（Fe），方铁矿（FeO），磁铁矿（FeO.Fe2O3）到赤铁矿（Fe2O3），反映fO2愈来愈高。 岩浆氧逸度是制约Cu、Au成矿的重要因素之一，Cu、Au为 …

2015年1月15日 · Results for the fO2 sensors are in good agreement with the intended fO2 established by the buffer, demonstrating excellent control for durations of 24–48 h, with …

Geo-fO2 is a specialized software for analysis of magmatic oxygen fugacity (fO2) on the basis of oxybarometers and thermobarometers for common minerals in intermediate–silicic magmas. It …