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Table 2 Average compositions of minerals from dyke-type rodingite and metagabbro

From: Interplay of irreversible reactions and deformation: a case of hydrofracturing in the rodingite–serpentinite system

  Dyke-type rodingite131018-1B Metagabbro 131019-MG
  Di Grt1a Grt 2b Chl Di Chl Ttn Ep
  n c = 10 n = 7 n = 10 n = 6 n = 5 n = 3 n = 3 n = 13
SiO2 54.66 39.26 39.95 29.69 53.32 29.81 30.75 39.26
TiO2 0.15 38.47
Al2O3 1.18 18.04 21.49 21.18 2.01 20.25 1.19 29.10
Fe2O3 5.85 1.34 5.40
FeO 2.59 3.77 4.93 4.55 0.41
MnO 0.50 0.19
MgO 16.81 29.70 15.61 29.48
CaO 24.80 36.17 36.96 0.09 23.72 29.10 24.68
Na2O 0.44
Total 100.04 99.97 99.74 84.43 100.03 84.28 99.92 98.44
   apfu     apfu   
O 6 12 12 28 6 28 5 12.5
Si 1.98 3.01 3.01 5.76 1.95 5.82 1.00 3.02
Ti 0.01 0.95
Al 0.05 1.63 1.91 4.84 0.09 4.66 0.05 2.64
Fe3+ 0.34 0.08 0.31
Fe2+ 0.08 0.61 0.15 0.74 0.01
Mn 0.03 0.03
Mg 0.91 8.59 0.86 8.58
Ca 0.96 2.97 2.98 0.02 0.93 1.02 2.03
Na 0.03
Σcation 3.98 7.99 7.98 19.82 4.01 19.83 3.03 8.00
XMg 0.92 0.93 0.85 0.92
XSps 0.01
XGrs 0.82 0.96
XAdr 0.17 0.04
  1. aGrt1: Fe-rich garnet
  2. bGrt2: Fe-poor garnet
  3. cn: number of analyzed grains