Select the one substance that is not a mineral.

 - Wood is a body part of a plant. It is a solid.
 - Turquoise is a solid. It is a pure substance.
 - Hornblende is a pure substance. It is not made by living things.
Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Turquoise is a mineral.
Wood is a body part of a plant. But minerals are not made by living things.
So, wood is not a mineral.
Hornblende is a mineral.