Silica mineral. Silica mineral, any of the forms of silicon dioxide (SiO2), including quartz, tridymite, cristobalite, coesite, stishovite, lechatelierite, and chalcedony. Various kinds of silica minerals have been produced synthetically; one is keatite. General considerations.
Essential Information. Basic requirements for admission to a LPN program include a high school diploma or GED and possibly nursing assistant certification and the completion of certain classes. Students who complete LPN education programs are able to earn licensure and begin working within 1-2 years.
They can sign up to take the exam once they have graduated from an LPN program. To get into a practical nursing program, students may need a high school education, though not everywhere. Most applicants need to be at least 18 years old.