Table 1. 

Compositions of metavolcanic and associated rocks from the Qussuk area

Rock:Amphibolite s.s.MetagabbroFragmental amphibolitePyrrhotite-bearing horizonsVolcano-sedimentary schist
Number:477305477345477348477378477310477311477347477301477306477316477324477361477367477385477327477374477382477303477334477353477387
SiO248.5848.7246.5648.4649.3746.6146.8357.1057.8066.3654.6156.4961.2364.7659.6061.8354.8071.9364.5061.6670.48
TiO20.550.670.700.580.530.370.520.760.720.630.881.000.610.821.220.780.920.470.680.490.47
Al2O315.9915.1117.3815.3816.7515.2317.0815.1316.5014.5217.1816.3517.7413.2116.6215.9421.5812.9114.8015.6212.59
Fe2O31.672.582.103.271.772.212.171.762.153.021.532.071.422.911.881.113.441.930.731.122.53
FeO9.118.7910.037.737.968.768.865.815.482.846.226.415.555.846.495.931.993.844.984.323.97
FeO*10.6111.1111.9210.679.5510.7510.817.397.415.567.608.276.838.468.186.935.095.575.645.336.25
MnO0.180.200.210.190.170.180.180.130.120.030.150.130.120.140.140.080.060.080.080.070.12
MgO8.347.698.028.547.2713.488.824.913.802.234.993.782.271.682.735.261.990.863.484.970.75
CaO11.6810.319.7510.6912.549.9510.609.266.723.417.697.495.243.764.660.474.553.152.594.732.39
Na2O1.702.392.432.171.491.242.083.303.863.203.253.153.193.063.040.614.563.143.613.363.10
K2O0.190.940.270.300.380.130.250.721.341.711.310.921.711.551.313.002.450.952.321.901.99
P2O50.030.050.040.020.020.010.020.090.090.090.110.190.110.140.190.100.120.070.110.090.07
Volat.1.301.661.571.611.311.311.580.890.851.111.061.091.071.171.103.662.360.610.770.870.90
Sum99.3399.1299.0498.9299.5699.4798.9999.8599.4599.1498.9899.08100.2699.0398.9898.7698.8399.9298.6699.2099.36
Mg-no.60.957.857.161.360.171.361.856.850.444.356.547.539.728.239.86043.623.45564.919.2
Sc414029424531332721203228192625182219162016
V21220017820720713416013614982148152547718213516024758810
Cr34121996261333371189235662172041974265391732418110417962
Co5251555444715733262231441414212518614255
Ni180152178188103419213125589274149121842624115441129
Zn6894105765868118827238861037184522145283366162
Ga15161715151215182018211919182220251818171
Pb2.75.83.34.03.42.62.78.78.08.54.18.210.25.89.311.929.06.611.58.98.7
Th0.30.20.20.20.30.20.22.21.67.00.53.83.15.32.16.67.56.87.93.77.4
U0.10.30.10.20.20.10.10.60.61.90.30.80.61.20.71.62.01.21.50.71.4
Rb3216107249496656458769581229443627873
Sr631851068757637416028114713628124516419939195107166239131
Ba2817151454463817433175743038141558811198264514631065385835
Zr33424132292229112109230119163135222166213228309253118292
Nb0.81.81.10.80.80.50.74.23.98.35.77.35.28.05.93.99.89.89.34.710.0
Ta0.060.100.070.070.070.040.040.300.260.610.380.460.360.600.360.510.700.540.600.370.70
Cs0.030.530.150.100.090.020.060.082.080.731.372.402.220.841.122.772.510.701.652.460.79
La2.23.41.91.32.01.01.912.611.724.611.021.316.122.713.623.022.917.628.614.431.6
Ce4.88.44.93.34.22.44.024.824.447.923.445.032.544.626.544.042.247.555.826.059.3
Pr0.61.30.80.50.60.40.63.02.85.32.95.53.75.22.94.84.64.45.72.86.9
Nd3.215.794.082.972.841.952.8612.0611.5319.9611.9422.7314.3620.7311.5918.0216.8117.3121.1310.2726.01
Sm1.21.81.61.31.10.81.12.92.74.23.14.73.35.32.73.83.34.04.32.16.0
Eu0.500.660.620.510.480.400.470.900.891.010.921.391.111.320.830.841.001.241.000.611.29
Gd1.92.32.42.01.61.31.73.12.63.43.04.53.15.71.72.83.24.01.85.8
Tb0.370.460.480.410.340.260.340.500.450.650.530.700.531.060.630.560.530.780.620.321.16
Dy2.53.23.32.92.41.82.32.92.73.83.24.03.06.54.13.23.15.13.51.87.3
Ho0.640.790.830.720.620.450.580.610.570.820.680.870.641.531.020.670.731.260.730.391.80
Er1.82.22.42.11.71.31.71.71.62.31.92.41.84.42.91.82.13.71.91.05.6
Tm0.300.340.380.340.280.220.270.260.240.350.270.350.270.680.460.280.320.610.290.150.84
Yb2.02.22.52.21.81.41.81.61.52.31.72.31.84.42.91.72.03.91.81.05.6
Lu0.320.360.400.340.300.230.300.250.220.370.270.350.300.700.450.270.300.640.300.160.89
Hf1.01.21.21.00.90.70.83.02.95.93.23.93.35.84.45.25.68.06.43.07.7
Y17.421.122.919.816.412.116.716.915.222.018.323.018.143.526.919.220.734.019.210.249.0
  • Mg−number=100MolarMgO/(MgO+FeO), where FeO=0.9FeO* to account for magmatic oxidized iron.