This is a mineral.
A Mineral.
To be classified as a true mineral, a substance must be a solid and have a crystalline structure. It must also be a naturally occurring, homogeneous substance with a defined chemical composition
Mineral.
A Mineral
An alloy is a combination of two or more metals that form a stable third metal. A mineral is "A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalline structure, color, and hardness" An alloy is almost never naturally occurring, and is not usually crystalline, and probably not homogeneous.
A mineral
A mineral is a naturally occurring, inorganic, solid substance, with a crystalline structure and a narrow range of chemical composition.
Minerals have a definite chemical composition, are solid, are inorganic, are naturally occurring, and have a crystalline structure.
A mineral is a naturally occurring, inorganic, solid substance, with a crystalline structure and a narrow range of chemical composition.
An economic mineral is a naturally occurring, inorganic, solid material with a defined chemical composition and crystalline structure.
To be naturally-occurring, the substance must not be man made. The inorganic requirement states that the substance must not be constructed by an organism. The solid characteristic eliminates any substance that is liquid or gas. Definite chemical composition means that the substance must have chemical composition that falls within a specific range. The characteristic that requires the substance to have an ordered internal structure states that the atoms are arranged in a repeating pattern.
If it's also a solid, it would be called a mineral.