Table 1.

Geochemical characteristics of water samples

SampleSource waterMine (shaft)Depth (km)Vol filtered (liters)Temp (°C)pHConcn of:
DesignationTypeDissolved O2(ppm)TDS (%, wt/wt)Cl (ppm)NO3 (ppm)SO4 (ppm)δ18O (‰, V-SMOWb)δD (‰, V-SMOWb)TOC (ppm)DOC (ppm)Particulate organic carbon (ppm)
S1Surface waterEDS-1Driefontein (5E)3.2417.67.915.30.074222.047.040.0−2.7−8.591394
S2Surface waterK4-41-SW1Kloof (4)3.081196.8NAa0.134287.012.7635.0−2.75NANANANA
A1Acid mine waterWDF1Driefontein (2W)1.83303.0 5 >0.13102.844.0769.3−3.85NA<1<1<1
D1Dolomite aquiferE4-IPC-DW2Driefontein (4E)0.76257.01.50.02215.5<180.0−4.55−20.28651
F1Fissure waterWDF2bDriefontein (6W)2.764510.00.00.118610.0<1112.0−6.58NA211
F2Fissure waterB2-25-FW1Beatrix (2)0.877.4359.50.00.2141,295.0<10.71.92−36.861<11
F3Fissure waterK4-41-FW1Kloof (4)3.0811.6609.61.10.3231,898.5<10.1−5.71−27.69211
  • a NA, not analyzed.

  • b V-SMOW, Vienna Standard Mean Ocean Water.