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Table 2 Basic chemistry of the natural waters used in precipitation experiments and the resulting experimental mineral precipitates.

From: Biologically induced mineralization of dypingite by cyanobacteria from an alkaline wetland near Atlin, British Columbia, Canada

Sample Initial chemistry Final chemistry (6 weeks)   
  pH Cation (mg/L) System pH Cation (mg/L) Percent change Precipitate mineralogy
Ground water 8.12 Mg – 340 abiotic 9.2 Mg – 352 +3.5% no precipitate
   Ca – 4.00    Ca – 4.48 +12%  
   Si – 4.55    Si – 5.36 +18%  
    biotic 9.6 Mg – 134 -61% dypingite
      Ca – 2.45 -39%  
      Si – 1.73 -62%  
Wetland water 8.58 Mg – 780 abiotic 9.0 Mg – 457 -41% nesquehonite
   Ca – 11.1    Ca – 6.25 -44%  
   Si – 18.9    Si – 19.9 +5.3%  
    biotic 9.5 Mg – 177 -77% dypingite
      Ca – 1.99 -82%  
      Si – 0.16 -99%  
w/ NaOH    abiotic 10.3 -   nesquehonite w/ dypingite