[ZenGum]

I think it is possible for an Atheist to believe in some spiritual dimensions to reality.

Atheism is the denial of the existence of a particular kind of being: A Theos, a theistic deity, i.e an immanent, transcendental god.

This does not necessarily rule out other "spiritual" beliefs - ghosts, reincarnation, spirits and spirit guides, karma, animist spirits, nature spirits, magic etc etc.

Of course most Atheists don't believe in such things, but there is room for it.