Before revision: Physical Components alt=Close up of tiny particle of volcanic ash, showing its many tiny tubular holes| Particle of volcanic ash from Mount St. Helens Volcanic ash particles erupted during magmatic eruptions are made up of various fractions of vitric (glassy, non-crystalline), crystalline or lithic (non-magmatic) particles.
After revision: Physical Components alt=Close up of tiny particle of volcanic ash, showing its many tiny tubular holes| A scanning electron micrograph image of a particle of volcanic ash from Mount St. Helens Volcanic ash particles erupted during magmatic eruptions are made up of various fractions of vitric (glassy, non-crystalline), crystalline or lithic (non-magmatic) particles.