Coal would be one example.
Fire is not a mineral
It is a metallic mineral.
you can set a wooden toothpick on fire but not any other kind that can burn like metal toothpicks.
Epidote is formed from a set of minerals, and it is used to form other mineral types of its own kind by chemical reactions on it.
A harder mineral will scratch a softer one.
Quartz!
A combustible material can be set on fire. You can also set a frying pan on (a) fire.
Feldspar
I would say ice is not easily set on fire.
An iPod will not catch fire by itself, but you can set an iPod on fire.
Set the Fire was created in 1984.
Hydrogen does not set things on fire. Hydrogen itself is flammable and can be set on fire by a spark or flame.