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Figure F1. Plots of examples of data used to determine amorphous silica content, Site C0011. The rapid increase in silica concentration in the leachate within the first ~30 min results primarily from amorphous silica dissolution (open circles). Structured silicates dissolve slowly and continue to contribute silica to the leachate after all amorphous silica has been dissolved (solid circles). The contribution of silica to the leachate from amorphous material alone is determined by projecting a line fit to the late data (dashed line) to time = 0.

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