Primitive Archer
Main Discussion Area => Flintknapping => Topic started by: ozy clint on May 12, 2010, 07:38:52 am
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a guy sent me these rocks that are from Nullagine in northern western australia. he says it's jasper. not knowing what jasper looks like i thought i'd post some pictures to see if anyone can confirm this or tell me it's something else. it's really tough and has a grainy surface texture.
i think it will need heat treating to make it workable. what temp and how long guys?
(http://i530.photobucket.com/albums/dd349/ozyclint/IMG_1239.jpg)
(http://i530.photobucket.com/albums/dd349/ozyclint/IMG_1240.jpg)
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Yes i would say its defiantly a type of jasper.
Mook jasper comes from west Australia and cooks at 525* be sure to let it set at 250 for a few hrs and let it dry then ramp it up 50* an hr until you reach 525*
Thats some cool looking stuff. Keep me posted we might have to do some tradeing.
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Use just a couple of small flakes while you experiment. It will take a lot longer at first, it beats blowing up an entire kiln full of rocks. Bill
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As mentioned small amounts low and slow or KA POW ya got to let any water vapor evaporate slow or unecessay fractuing will occur. The colors are awesome they will enhance a bit when fully cooked cant wait to see it!
Russ