The partitioning of As and Au into pyrite was studied by replacing siderite (FeCO3) by pyrite (FeS2) by reacting the Fe carbonate with H2S-containing aqueous fluids under …
However, although hydrothermal siderites are often found in metalliferous veins, there can be a separate siderite vein or one associated with ankerite, galena, …
Differences in the processes of pyrite and siderite oxidation, in reclaimed swamp sediments of the Skjernå delta (Denmark), are described from sediment …
Siderite has a low-temperature transition at 30–35 K (Housen et al., 1996), distinctively different from that of pyrrhotite (Section 5.08.3.9). Siderite is paramagnetic at ordinary temperatures and carries no NRM.
Here, we show that methanogens can catalyze the reductive dissolution of FeS 2 at low temperature (≤38 °C) and utilize dissolution products to meet cellular iron …
In the study of Weibel et al. (2016), fluctuating groundwaters were found to be the main cause for the alternating physicochemical conditions of siderite formation. …
Similar to the pyrite–siderite petrographic relationship, the siderite–calcite relationship suggests locally fluctuating and spatially variant conditions between calcite …
For instance, our results suggest that the replacement of siderite by pyrite through a coupled dissolution reprecipitation reaction may serve as an efficient process …
The presence of hydrogen sulfide also precludes the formation of siderite because hydrogen sulfide reacts rapidly with dissolved iron to make iron monosulfide minerals and ultimately pyrite (Berner, …
The abundance of large, massive siderite-rich beds in pre-1.8-Gyr sedimentary sequences and their carbon isotope ratios indicate that the atmospheric CO2 concentration was more than 100 times...