Mr.Chong..(har)...I knapped them out last year,I was piddlin with some Obsidian from a friend in Utah.
The moon shaped one was larger,but I used it to process some plants(for hafting fiber).Sorry I don't know the name,but I will look for a pic.
sorry your reply was hidden with all my other messages, i was asking cause i found a obsidian spur a few months ago, its ground, but i dunno what the heck it is!!!!