arfvedsonite (photo by rob lavinsky) is useful in astral travel.

colour/appearance:

greenish-black, dark grey, black

sources:

canada, greenland, russia

chakra(s):

crown

physical:

chases away nightmares

emotional:

helps us restructure and reorganize old patterns and helps smooth changes in our lives

spiritual:

opens the crown chakra and provide a clear path helps with transitions from one life to another as well as assisting in birth and rebirthing use to locate energy blockages in the body