Select the one substance that is not a mineral.

 - Hematite is a pure substance. It is a solid.
 - Pyrite is a solid. It is not made by living things.
 - Burlap is not a pure substance. It is made by humans.
Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Pyrite is a mineral.
Burlap is not a pure substance. But all minerals are pure substances.
Burlap is made by humans. But minerals are not made by living things.
So, burlap is not a mineral.
Hematite is a mineral.