human
What are the different kinds of sand?
assistant
The different kinds of sand include quartz sand, feldspar sand, granite sand, and pumice. Quartz sand is composed primarily of silicon dioxide (SiO2), while feldspar sand is composed of potassium feldspar (KAlSi3O8). Granite sand is made up of a mixture of minerals including quartz, feldspar, mica, and hornblende. Pumice is a porous volcanic rock that is composed mainly of silica.