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Table 10 Composition of chlorite from four samples of TGU Grt-Ph schist

From: The Theodul Glacier Unit, a slab of pre-Alpine rocks in the Alpine meta-ophiolite of Zermatt-Saas, Western Alps

 KB 860OK-Z129OK-Z131OK-Z133
61/164/1Chl3Chl4Chl7Chl-ES1Chl-ES2Chl-ES1Chl1Chl4
SiO225.9226.0827.3927.4625.4725.3125.0028.0225.9825.13
Al2O322.8522.4421.1421.3721.3922.6022.4621.0822.2422.11
FeO23.4923.8919.0619.5425.4724.6924.9516.6622.3224.16
MnO0.30.270.180.120.360.320.250.050.270.29
MgO15.9216.2419.8919.614.6414.7914.6822.7516.5915.05
Total88.4888.9287.6688.0987.3387.71187.3588.5687.486.74
Si2.6672.6782.782.7782.6952.6492.6372.7742.6912.654
Al(IV)1.3331.3221.221.2221.3051.3511.3631.2261.3091.346
Al(VI)1.4371.3931.311.3251.3631.4361.4281.2341.4071.406
Fe2+2.0212.0511.6181.6532.2542.1612.2001.3791.9332.134
Mn0.0260.0230.0160.010.0330.0280.0230.0040.0240.026
Mg2.4422.4863.012.9562.3092.3082.3083.3582.5622.370
XFe0.450.450.350.360.490.480.490.290.430.47
  1. Traces of Ti, Cr, Ca, Na and K (all < 0.1 wt%), concentrations in wt%, formulas per 14 oxygen