andesitt
Andesitt is a volcanic rock term used in some languages to refer to andesite, an igneous rock of intermediate silica content. The name andesitt is commonly found in languages such as Norwegian and Swedish, where it designates the same rock type known elsewhere as andesite. The term derives from the Andes mountain range, where these rocks were first described and studied.
Mineralogy and texture characterise andesitt by a dominant plagioclase feldspar component, often calcium-rich to andesine, with
Formation and occurrence: andesitt forms from magma of intermediate composition, commonly generated in subduction zone settings.
Geological significance and uses: as an abundant volcanic rock, andesitt contributes to crustal diversity and is