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Blitz rock/obsidian cook

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Zuma:
It's damp and chilly today so I thought I would warm up the kitchen.
I piled a bunch of jasper, Mexican Green obsidian, Flint River, and a chunk
of Coastal Plains into the pans with sand and will ramp up fast in oven to 500f.
About 5 hrs or so then slowly drop temp to 320f then shut off to cool. (=) (=)
Zuma

JEB:
Obsidian?

bjrogg:
Jeb I wondered about that to, but I remember Zuma saying he had some poorer quality green Obsidian that he could improve by cooking it.
It's a bit on the cool side here to Zuma. Was to a outside Birthday party last night and the long sleeves and jacket really wasn't enough. Just a few days earlier it was almost 90 with unbearable humidity. I don't mind looking for another jacket.
Bjrogg

JEB:
If that is the case then I wonder how it turns out BJ as I have some black obsidian that is crap.

Zuma:

--- Quote from: JEB on September 09, 2018, 04:17:04 pm ---If that is the case then I wonder how it turns out BJ as I have some black obsidian that is crap.

--- End quote ---
Steve Nissley turned me on to it.  I had an 80# spall I bought at the Ridge in 2015.
It was dried out and horrible to knap. I have cooked it several times and there was
 marked improvement. Works on dried out Dacite also, I have a couple threads about it.
Bj I crutched down to the local picknick in a hoody and jacket yesterday afternoon brrrr
Zuma

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