Post on 18-Dec-2015
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UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOSFundada en 1551FACULTAD DE INGENIERIA GEOLOGICA, MINERA, METALURGICA Y GEOGRAFICA
Practica N2:
Elementos mayores rocas volcanicas
Geoqumica generalCURSO
Mag. Ing. Hugo Rivera MantillaPROFESOR
Anthony Mandujano AdrianznALUMNO
Lima - Per2015
PRACTICA DE GEOQUIMICA GENERAL 3ELEMENTOS MAYORES ROCAS VOLCANICAS1.- DADO LOS RESULTADOS DE LOS ANALISIS GEOQUIMICOS DE ROCA TOTALGRUPO TOQUEPALA
No891011121314
MuestraPER1/XRF/BPER1/XRF/CPER1/XRF/DPER1/XRF/EPER1/XRF/FPER1/XRF/GPER1/XRF/H
CuadrnguloMoqueguaMoqueguaMoqueguaMoqueguaMoqueguaMoqueguaMoquegua
Coordenadas8103299810329981032998103299810329981032998103299
299135299135299135299135299135299135299135
Tipo de rocaLavasLavasLavasLavasLavasLavasLavas
SiO274.2774.8173.974.474.6571.1774.79
TiO20.160.160.160.150.160.250.17
Al2O312.5412.4312.5612.5412.5713.7912.75
Fe2O31.411.411.51.351.351.681.36
FeO0.130.130.160.130.130.040.13
MnO0.050.050.050.040.050.080.06
MgO0.390.350.40.350.360.30.29
CaO1.191.071.131.061.090.591.2
Na2O3.123.163.113.123.12.433.1
K2O4.064.274.354.234.315.84.41
P2O50.060.030.050.040.050.060.04
H2O0.210.510.480.470.380.930.48
CO20.210.21110.2
LOI1.781.571.391.511.42.651.51
TOTAL99.57100.9599.44100.39100.6100.77100.49
1.- Recalcular la base de datos eliminando los voltiles y otros fluidos y ajustando al 100%.Respuesta. Recalculando sobre base anhidra de los datos y utilizando la formula obtenemos:
GRUPO TOQUEPALA
No891011121314
MuestraPER1/XRF/BPER1/XRF/CPER1/XRF/DPER1/XRF/EPER1/XRF/FPER1/XRF/GPER1/XRF/H
CuadrnguloMoqueguaMoqueguaMoqueguaMoqueguaMoqueguaMoqueguaMoquegua
Coordenadas8103299810329981032998103299810329981032998103299
299135299135299135299135299135299135299135
Tipo de rocaLavasLavasLavasLavasLavasLavasLavas
SiO276.2776.4475.9076.3876.3173.9976.08
TiO20.160.160.160.150.160.260.17
Al2O312.8812.7012.9012.8712.8514.3412.97
Fe2O31.451.441.541.391.381.751.38
FeO0.130.130.160.130.130.040.13
MnO0.050.050.050.040.050.080.06
MgO0.400.360.410.360.370.310.30
CaO1.221.091.161.091.110.611.22
Na2O3.203.233.193.203.172.533.15
K2O4.174.364.474.344.416.034.49
P2O50.060.030.050.040.050.060.04
Total100100100100100100100
2.- Calcular las proporciones moleculares, numero de cationes y proporciones catinicas de cada anlisis de rocas.
Muestra 8
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO276.2760.091.269211.2692
TiO20.1679.900.002110.0021
Al2O312.88101.960.126320.2526
Fe2O31.45159.690.009120.0182
FeO0.1371.850.001910.0019
MnO0.0570.940.000710.0007
MgO0.4040.300.0110.01
CaO1.2256.080.021810.0218
Na2O3.2061.980.051720.1034
K2O4.1794.200.044320.0886
P2O50.06141.950.000420.0008
Total100
Muestra 9
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO276.4460.091.272111.2721
TiO20.1679.900.00210.002
Al2O312.70101.960.124620.2492
Fe2O31.44159.690.00920.018
FeO0.1371.850.001910.0019
MnO0.0570.940.000710.0007
MgO0.3640.300.008910.0089
CaO1.0956.080.019510.0195
Na2O3.2361.980.052120.1042
K2O4.3694.200.046320.0926
P2O50.03141.950.000220.0004
Total100
Muestra 10
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO275.9060.091.26311.263
TiO20.1679.900.002110.0021
Al2O312.90101.960.126520.253
Fe2O31.54159.690.009620.0192
FeO0.1671.850.002310.0023
MnO0.0570.940.000710.0007
MgO0.4140.300.010210.0102
CaO1.1656.080.020710.0207
Na2O3.1961.980.051520.103
K2O4.4794.200.047420.0948
P2O50.05141.950.000420.0008
Total100
Muestra 11
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO276.3860.091.271111.2711
TiO20.1579.900.001910.0019
Al2O312.87101.960.126320.2526
Fe2O31.39159.690.008720.0174
FeO0.1371.850.001910.0019
MnO0.0470.940.000610.0006
MgO0.3640.300.008910.0089
CaO1.0956.080.019410.0194
Na2O3.2061.980.051720.1034
K2O4.3494.200.046120.0922
P2O50.04141.950.000320.0006
Total100
Muestra 12
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO276.3160.091.2711.27
TiO20.1679.900.002110.0021
Al2O312.85101.960.12620.252
Fe2O31.38159.690.008620.0172
FeO0.1371.850.001910.0019
MnO0.0570.940.000710.0007
MgO0.3740.300.009110.0091
CaO1.1156.080.019910.0199
Na2O3.1761.980.051120.1022
K2O4.4194.200.046820.0936
P2O50.05141.950.000420.0008
Total100
Muestra 13
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO273.9960.091.231311.2313
TiO20.2679.900.003310.0033
Al2O314.34101.960.140620.2812
Fe2O31.75159.690.010920.0218
FeO0.0471.850.000610.0006
MnO0.0870.940.001210.0012
MgO0.3140.300.007710.0077
CaO0.6156.080.010910.0109
Na2O2.5361.980.040820.0816
K2O6.0394.200.06420.128
P2O50.06141.950.000420.0008
Total100
Muestra 14
xidosWT%Peso molecularProp. molecularesNro de cationesProp. Cationicas
SiO276.0860.091.266211.2662
TiO20.1779.900.002210.0022
Al2O312.97101.960.127220.2544
Fe2O31.38159.690.008720.0174
FeO0.1371.850.001810.0018
MnO0.0670.940.000910.0009
MgO0.3040.300.007310.0073
CaO1.2256.080.021810.0218
Na2O3.1561.980.050920.1018
K2O4.4994.200.047620.0952
P2O50.04141.950.000320.0006
Total100
3.- Convertir los valores de hierro en hierro total, en hierro frrico total y hierro ferroso total.
Hierro\ Muestra891011121314
Fe2O31.4481.4411.5411.3861.381.7471.384
FeO0.1340.1330.1640.1340.1330.0420.132
Fe total1.5821.5741.7051.521.5131.7891.516
Fe2O3 total1.5971.5891.7231.5351.5281.7941.531
FeO total1.4391.4311.5521.3831.3761.6161.379
4.-Clasificar los anlisis de rocas de acuerdo a la saturacin de almina. Graficar en columna apilada y dispersin.Muestra 8
OxidoW%Peso MoleclarProp Moleculares
Al2O312.88101.960.1263
CaO1.2256.080.0218
Na2O3.2061.980.0517
K2O4.1794.20.0443
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 8
Al2O30.13
K2O + Na2O + CaO0.12
PERALUMINOSA
Muestra 9
OxidoW%Peso MoleclarProp Moleculares
Al2O312.70101.960.1246
CaO1.0956.080.0195
Na2O3.2361.980.0521
K2O4.3694.20.0463
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 9
Al2O30.125
K2O + Na2O + CaO0.12
PERALUMINOSA
Muestra 10
OxidoW%Peso MoleclarProp Moleculares
Al2O312.90101.960.1265
CaO1.1656.080.0207
Na2O3.1961.980.0515
K2O4.4794.20.0474
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 10
Al2O30.13
K2O + Na2O + CaO0.12
PERALUMINOSA
Muestra 11
OxidoW%Peso MoleclarProp Moleculares
Al2O312.87101.960.1263
CaO1.0956.080.0194
Na2O3.2061.980.0517
K2O4.3494.20.0461
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 11
Al2O30.13
K2O + Na2O + CaO0.12
PERALUMINOSA
Muestra 12
OxidoW%Peso MoleclarProp Moleculares
Al2O312.85101.960.126
CaO1.1156.080.0199
Na2O3.1761.980.0511
K2O4.4194.20.0468
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 12
Al2O30.13
K2O + Na2O + CaO0.12
PERALUMINOSA
Muestra 13
OxidoW%Peso MoleclarProp Moleculares
Al2O314.34101.960.1406
CaO0.6156.080.0109
Na2O2.5361.980.0408
K2O6.0394.20.064
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 13
Al2O30.14
K2O + Na2O + CaO0.12
PERALUMINOSA
Muestra 14
OxidoW%Peso MoleclarProp Moleculares
Al2O312.97101.960.1272
CaO1.2256.080.0218
Na2O3.1561.980.0509
K2O4.4994.20.0476
K2O + Na2O + CaO0.12
K2O + Na2O 0.10
Muestra 14
Al2O30.13
K2O + Na2O + CaO0.12
PERALUMINOSA
GRAFICA DE DISPERSION
5.- Obtener las correlaciones bivariables de los xidos mayores vs SiO2. Hacer un cuadro.SiO276.2776.4475.8976.3876.3173.9976.08
TiO20.160.160.160.150.160.260.17
Al2O312.8812.712.8912.8712.8514.3412.97
Fe2O31.451.441.541.391.381.751.38
FeO0.130.130.160.130.130.040.13
MnO0.050.050.050.040.050.080.06
MgO0.40.360.410.360.370.310.29
CaO1.221.091.161.091.110.611.22
Na2O3.23.233.193.23.172.533.15
K2O4.174.364.474.344.416.034.49
P2O50.060.030.050.040.050.060.04
6.- Construir los diagramas de Harker de los xidos mayores vs SiO2
7.- Clasificar las rocas de acuerdo al diagrama de TAS. (SiO2 vs Na2O+K2O) %SiO2Na2O + K2O
Muestra #876.277.37
Muestra #976.447.59
Muestra #1075.897.66
Muestra #1176.387.54
Muestra #1276.317.58
Muestra #1373.998.56
Muestra #1476.087.64
8.- Clasificar rocas de acuerdo al diagrama de Irvine-Baragar siO2 vs Na2O+K2OSiO2Na2O + K2O
Muestra #876.277.37
Muestra #976.447.59
Muestra #1075.897.66
Muestra #1176.387.54
Muestra #1276.317.58
Muestra #1373.998.56
Muestra #1476.087.64
9.- clasificar las rocas de acuerdo al diagrama de Ringwood SiO2 vs K2OSiO2K2O
Muestra #876.274.17
Muestra #976.444.36
Muestra #1075.894.47
Muestra #1176.384.34
Muestra #1276.314.41
Muestra #1373.996.03
Muestra #1476.084.49