- Amber , organic, non-crystal structure.
- Anthracite , a variety of coal, "hard coal."
- Coal , organic, nonhomogeneous, and non-crystal structure.
- Jet , not considered a true mineral due to organic, non-crystal nature, a mineraloid.
- Lignite , a variety of coal, "Brown coal."
- Limonite , amorphous hydrated iron oxide, a mineraloid.
- Obsidian , volcanic glass - non-crystal structure.
- Opal , non-crystal structure, a mineraloid.
- Pearl , often considered a mineral due to crystal components, but then not a mineral due to organic origin, probably should be a mineraloid.
- Petroleum , organic and liquid.
- ''pyrobitumen'', organic, nonhomogeous, non-crystal structure.
- ''Vulcanite'', Vulcanize d natural or synthetic rubber, thus not a mineral due to organic composition, lack of crystal structure, and not naturally occurring.
- List Of Minerals Mineraloids are listed after minerals in each alphabetically sorted section.
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