Anthracite coal is considered metamorphic. All other types are sedimentary.
Sedimentary rock.
coal isnt a mineral
Obsidian is in the Igneous rock group.
A schist rock belongs in the metamorphic rock group.
Obsidian is in the Igneous rock group.
the answer to the is sedementary
Diamond belong to the Igneous rock group!!
It is a sedimentary rock.
Igneous
Diamond is not a rock, it's a mineral.
Slate is a low-grade metamorphic rock.
I believe it belongs to the group Halides.