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Efrén Pérez Segura - Centro de Geociencias ::.. UNAM

Efrén Pérez Segura - Centro de Geociencias ::.. UNAM

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Garnet<br />

sample 03951-11 03951-12 03951-13 03951-14 03951-15 03952-1<br />

SiO2 34.38 34.75 34.68 38.11 38.10 37.36<br />

TiO2 0.01 0.03 0.00 0.46 0.54 0.06<br />

ZrO2 0.00 0.00 0.00 0.00 0.00 0.00<br />

Al2O3 0.48 1.12 0.98 11.56 13.74 2.23<br />

Cr2O3 0.02 0.00 0.00 0.01 0.00 0.01<br />

Fe2O3 calc. 31.34 30.61 29.37 15.61 11.04 25.30<br />

Y203 0.00 0.00 0.00 0.00 0.00 0.00<br />

V2O3 0.00 0.00 0.00 0.00 0.00 0.00<br />

FeO calc. 0.00 0.00 0.00 0.09 0.53 1.98<br />

MnO 0.21 0.33 0.24 0.28 0.18 0.28<br />

MgO 0.00 0.00 0.04 0.10 0.20 0.06<br />

CaO 32.79 32.73 33.10 35.36 34.98 33.04<br />

Total 99.24 99.57 98.41 101.55 99.31 100.31<br />

Si 2.940 2.949 2.973 2.988 3.011 3.099<br />

Al iv 0.049 0.051 0.027 0.012 0.000 0.000<br />

somme 2.989 3.000 3.000 3.000 3.011 3.099<br />

Al vi 0.000 0.061 0.072 1.056 1.279 0.218<br />

Ti 0.001 0.001 0.000 0.018 0.021 0.002<br />

Cr 0.001 0.000 0.000 0.000 0.000 0.001<br />

Fe3+ 2.017 1.955 1.895 0.921 0.656 1.579<br />

somme 2.018 2.017 1.967 1.995 1.957 1.800<br />

Fe2+ 0.000 0.000 0.000 0.006 0.035 0.138<br />

Mn 0.015 0.023 0.018 0.018 0.012 0.020<br />

Mg 0.000 0.000 0.005 0.011 0.024 0.008<br />

Ca 3.004 2.976 3.040 2.970 2.961 2.936<br />

somme 3.020 2.999 3.062 3.005 3.032 3.101<br />

Total 8.027 8.016 8.030 8.000 8.000 8.000<br />

Pyrope 0.0 0.0 0.2 0.4 0.8 0.3<br />

Almandin 0.0 0.0 0.0 0.2 1.2 4.4<br />

Spessartine 0.8 0.8 0.6 0.6 0.4 0.6<br />

Andradite 99.2 96.9 96.3 46.2 33.5 87.7<br />

Uvarovite 0.0 0.0 0.0 0.0 0.0 0.0<br />

Grossulaire 0.0 2.3 2.9 52.6 64.1 6.9<br />

100.0 100.0 100.0 100.0 100.0 100.0

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