Figures F1-F6
Tables T1-T4

F1. Residue remaining after 2-M Na₂CO₃ digestions.

F2. Reagent volume to sample mass vs. SiO₂ extracted from Site 1098.

F3. SiO₂ resulting from independent KOH and Na₂CO₃ digestions.

F4. Residue remaining after Na₂CO₃ and KOH digestions.

F5. Normative analysis vs. wet-alkaline SiO_{2 biogenic} results.

F6. Residue remaining after Na₂CO₃ and KOH digestions.

Tables T1-T4

T1. Analytical results of an in-house Composite Standard, Site 1098.

T2. Amount of SiO_{2 biogenic} extracted from selected samples.

T3. Comparison of SiO_{2 biogenic} values.

T4. Comparison of measured SiO_{2 biogenic} and weight percent CaCO₃.

Figures F1-F6
Tables T1-T4