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Table 11 Composition of epidote/clinozoisite/allanite from three 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

 KB860OK-Z131OK-Z133
EpidoteAllaniteREE-ZoisiteEp1Ep2Ep-ES1Ep1Ep2Ep3
SiO237.0534.4234.3038.5138.8138.8839.3939.5539.13
Al2O330.4327.2626.2428.1328.7930.6632.6532.6032.35
Fe2O34.924.92 5.755.444.411.481.761.91
MnO0.110.010.030.100.100.160.000.070.00
MgO0.040.310.150.030.000.000.000.000.00
CaO23.6021.4921.5422.9623.9423.9724.5324.6924.21
Total96.1588.4182.2695.4897.0898.0898.0598.6797.60
Si2.912.852.973.033.012.972.992.982.98
Al2.822.662.682.612.632.762.922.902.91
Fe3+0.290.34 0.380.350.280.090.110.12
Ca1.991.912.001.931.991.961.992.001.98
  1. Epidote rim = Euhedral overgrowth on corroded REE-rich allanite (core). REE-zoisite = Fe-free zoisite containing about 15 wt% REE2O3 total
  2. Formulas normalized to 12.5 oxygen