Semipelite
Semipelite is a type of metamorphic rock that falls between pelitic (clay-rich) and psammitic (sand-rich) compositions. It typically forms under regional metamorphism, containing minerals such as quartz, feldspar, biotite, and muscovite, with occasional garnet or staurolite. Semipelite is an important indicator of metamorphic grade and conditions, often reflecting the transitional nature of its protolith. This article explores its mineralogical composition, formation processes, and role in understanding geological histories and tectonic environments.
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Semipelite is a type of metamorphic rock that falls between pelitic (clay-rich) and psammitic (sand-rich) compositions. It typically forms under regional metamorphism, containing minerals such as quartz, feldspar, biotite, and muscovite, with occasional garnet or staurolite. Semipelite is an important indicator of metamorphic grade and conditions, often reflecting the transitional nature of its protolith. This article explores its mineralogical composition, formation processes, and role in understanding geological histories and tectonic environments.