In this article we are going to investigate the Manganese solubility in natural water with the help of various Eh-pH diagrams. We will also investigate the effect of bicarbonate (alkalinity) and sulfate on Manganese solubility. At the end we will compare the solubility of manganese against iron solubility. Background: In natural surface and groundwater, manganese [...]
Archive of posts filed under the Geochemistry category.
Alabandite (MnS) Geochemistry:Eh-pH diagram-Solubility-Stability Field
Alabandite is a sulfide mineral often found in epithermal sulfide vein deposits. The name of the mineral is derived from its supposed discovery locality at Alabanda, Aïdin, Turkey. Chemical Formula: MnS Composition: Molecular Weight = 87.00 gm General physical properties and color photograph of Alabandite can be found at http://www.mindat.org/min-89.html Google Image also [...]
Composition of sea water: speciation model using Geochemist’s Workbench
It is wonderful what you can really do with Geochemist’s workbench. In this exercise, I am going to use the known concentrations of sea water and use Geochemist’s workbech to perform a little exercise. Geochemist workbench has different modules. In this particular exercise, I am going to use the SpecE8 module. This module is similar [...]
PHREEQC: Molality and mole calculations
If you hate doing mole calculations by hand, check out this PHREEQC tip. Good thing about the free software by USGS is that you can input the variables as mg/L (or other units) and it will first speciate the solutions to give you the molality and moles for each component. Lets just use one example [...]
Convert Eh (mV) to pe – Geochemistry Tips!
Convert Eh (mV) to pe – Geochemistry Tips! Well, we are going to do nothing fancy. We will be converting our field Eh (mV) measurements to pe. I just used simple formula and make the spread sheet in excel that I use for my own quick reference. If you have lost your calculator or could [...]
