trachyitic
Trachyitic refers to a specific type of igneous rock. It is a volcanic rock that is intermediate in composition between felsic and mafic rocks. Trachyte is characterized by a porphyritic texture, meaning it contains larger crystals (phenocrysts) embedded in a finer-grained groundmass. The dominant mineral in trachyte is alkali feldspar, typically anorthoclase or orthoclase.
The chemical composition of trachyte is rich in silica and alkali metals, particularly sodium and potassium.
Trachyitic rocks are typically light in color, ranging from white and pink to gray. Their texture can
These rocks are formed from the cooling and solidification of magma that has undergone partial melting and