I know this ain't knappin', but thought some of you might like to look at some rock.
This is the first piece of Horse Creek chert I have gotten my hands on.
The nodule was a gift from someone at the knap-in. Thanks again!
And I was spalling/bustin' up some rhyolite yesterday and the way this piece broke
I thought was kind of interesting. ( Hope some of you do, too.)
Some rhyolite is layers of volcanic ash that has settled and cemented together. Sometimes you
have to work away the excess until your preform is all within the same layer. Crossing from
one layer to another is 'sometimes' impossible. Each layer may be very different material.
Here's the whole piece. I hit it on the left side and the break traveled until it hit the softer,
finer grained layer and dove..............
close-up of same pic,
Now I'm going to take that creamy hump piece from the top piece and put
it back on the bottom piece.
close-up of same,
And here's a couple of pics with the rock sprayed with some water for color.
The wide wild world of rhyolite!
Thanks for looking.
Joe
