Which option is a mineral?
A. wood
B. garnet
C. pearl
D. coal
B. garnet
The option that is a mineral is B. garnet.
To identify which option is a mineral, we need to understand what a mineral is. A mineral is a naturally occurring, inorganic solid with a specific chemical composition and a crystalline structure.
Now, let's examine each option:
A. Wood: Wood is not a mineral because it is derived from organic material (plants) and does not have a crystalline structure.
B. Garnet: Garnet is a mineral. It is a group of minerals that vary in color but share a common crystal structure and chemical composition.
C. Pearl: Pearl is not a mineral because it is formed by living organisms (oysters) and consists mainly of organic material rather than being an inorganic solid with a crystalline structure.
D. Coal: Coal is not a mineral either because it is derived from organic matter (decomposed plant material) and does not have a crystalline structure.
Therefore, the correct answer is B. garnet.