… pH 3 and 4.5, compared to open-system abiotic biotite dissolution experiments. Here, we have
reacted biotite with three organic ligands (… ) and assessed their influence on the release of …

… rate enhancement due to the presence of an organic ligand, R~, was modeled as a function
of the concentration of surface-adsorbed organic ligand … , biotite, and muscovite but, at pH 2.5…

… model mineral because a weathered form of biotite, glauconite, was … rates of phyllosilicates
as well as the effects of organic … Second, by considering the pH effect of organic ligands and …

… biotite grains before reaction from the (A) 25-53 µm, (B) 53-180 µm, and (C) 180-500 µm size
fractions, and (D) post reaction from the pH 6 ligand-… from the pre reaction biotite samples, …

… of <50 μm biotite particles were placed in 1L of pH = 2 HNO … the observed slower dissolution
rates in our experiments. We … in the presence of SiO 4 ligands. 2. Characterization of Si−Fe …

… the influence of different acids, simulated rainfall rates, surface horizons, and temperature on
the weathering and cation release of biotite… Figure 4.8 Trends in pH as a function of time for …

… the rate and stoichiometry of biotite weathering in Na… biotite and biotite weathered at pH
2.8. The figure shows the d(001 )-peak and indicates formation of a vermiculite during weathering…

… Fe-hosting phases in the rocks: biotite (granite) versus glass … 0.01 M organic ligands shows
that these rates of dissolution … silicate minerals of the same grain size as used in the present …

… have little effect on the rate and nature of biotite dissolution, although they may influence
vermiculite … mineral end-product may be different in aerobic vs anaerobic weathering of biotite. …

… presence of organic ligands, etc.) should also be considered in explaining the discrepancies.
… This value corresponds nicely to the Si dissolution rates at pH 3 of the ground samples in …