Thanks everybody. I went back out last night and got a rude reminder of how easy the dacite was. First I busted into a chunk I got from Cipriano and was pleasantly surprised with what was inside...
![](http://farm9.staticflickr.com/8297/7770827644_e30343f747_z.jpg)
From there on it went downhill as it was so round on one side I could not get an angle to thin it. I pretty much have a flint tennis ball now.
![Embarrassed :-[](http://www.primitivearcher.com/smf/Smileys/default/embarrassed.gif)
![](http://farm9.staticflickr.com/8288/7770825388_ee1d110d41_z.jpg)
So I grabbed a larger cobble and had a nice preform started, hoping for a blade when...
![](http://farm8.staticflickr.com/7246/7770823860_075ec2d6e4_z.jpg)
I snapped it. I think I hit just a little too high and with raw flint like that I was really swinging. Interestingly enough, I got the thinning flake I wanted, which also broke in half. Weird. I'm sure missing that dacite now. Might go look for another piece of it.
![Smiley :)](http://www.primitivearcher.com/smf/Smileys/default/smiley.gif)
George