Which option is a mineral?
A. Pearl
B. Coal
C. Wood
D. Garnet
D. Garnet
The option that is a mineral is D. Garnet.
To determine which option is a mineral, we need to understand what a mineral is. A mineral is a naturally occurring, inorganic solid that has a specific chemical composition and a definite crystalline structure.
Now let's analyze the options provided:
A. Pearl: A pearl is not a mineral. It is an organic gem formed inside the shell of certain mollusks.
B. Coal: Coal is not a mineral either. It is a black or brownish-black sedimentary rock primarily composed of carbonized plant matter.
C. Wood: Wood is not a mineral because it is organic, derived from trees, and composed of various complex compounds.
D. Garnet: Garnet is a mineral. It is a group of silicate minerals with various compositions and crystal structures. It occurs naturally in many different colors and is often used as a gemstone.
Therefore, the correct option is:
D. Garnet