Soapstone is a metamorphic rock that is comprised primarily of talc with varying amounts of dolomite, magnesite, and other minerals. Soapstone generally has a smooth feel to the touch. It is used for countertops and other various building aspects such as sinks and heaters.
This is a very popular choice for countertops in laboratories and classrooms due to its high resistance to chemicals. It also has limited hardness and is vulnerable to scratches from abrasives.
Soapstone is typically top-treated with food-grade mineral oil to retain its luster and to mask small scratches that are often common because of its talc content.