Feldspars and Feldspathoids 53 1Bedeutung der Zielformulierung61

1Bedeutung der Zielformulierung61

1Momente der Gruppendynamik31

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die Zielsetzungen

Feldspars and Feldspathoids 53 1Bedeutung der Zielformulierung61The feldspars form the most abundant group of minerals in the crust of the Earth and Moon and also occur in many meteo rites. They playa fundamental role in all rock forming processes at shallow depths, but are rare or absent from the upper mantle. Their detailed study is thus essential for the understan ding of such varied processes as magma genesis and differentia tion, metamorphism, al teration, erosion and sedimentation. This interest is show by