* Color: Oil sheen will typically be a rainbow of colors, while mineral will be a single color.
* Texture: Oil sheen will be smooth and oily, while mineral will be gritty or crystalline.
* Smell: Oil sheen will typically have a strong odor, while mineral will be odorless.
* Behavior: Oil sheen will spread out over the surface of the water, while mineral will sink to the bottom.
If you are still not sure whether you are looking at oil sheen or mineral, you can try to collect a sample and take it to a laboratory for analysis.
