I had a lady at a college look at it. It appears to be from Chert and she thought from the end era of the dinosaures. It resembles being partially carved like an eagle head. The crown has a crystal like quartz shell in it. An old Indian gent said it probably belonged to a medicine man and that it was lost, as he would probably used it a lot in healing. Then I took it to another guy at a college and he said oh just limestone, nothing……I wonder? Whata ya think? junk or treasurer?