What is Guatamalas santa maria lava composition?

The Santa María volcano in Guatemala primarily features a lava composition that is predominantly andesitic to dacitic. This means it contains a mixture of silica, iron, magnesium, and other minerals, resulting in a relatively high viscosity compared to basaltic lavas. The composition contributes to the explosive nature of eruptions from Santa María, as the thicker lava can trap gases, leading to more violent volcanic activity.