The Elemental Planes

There are four major elemental planes (Fire, Earth, Water, Air), the four para-elemental planes (Smoke, Ice, Ooze, Magma), and the eight quasi-elemental planes (Lightning, Steam, Radiance, Minerals, Vacuum, Salt, Ash, Dust). They could be thought of as being on the surface of a sphere with Positive Energy at the north pole, Negative Energy at the south pole and Fire, Earth, Water, and Air on the equator, equidistant from each other. The para-elemental planes were found on the equator between the boundaries of Fire, Earth, Water and Air (Magma was between Fire and Earth, for example). Four of the quasi-elemental planes were found between the boundaries of Positive Energy and the four elements (Steam was between Positive Energy and Water, for example). And the other four quasi-elemental planes were between Negative Energy and the four elements (Vacuum was between Negative Energy and Air, for example).