Deleted
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Post by Deleted on Sept 2, 2016 18:49:53 GMT -5
Tools so far... Do you have your warpaint on your face? So Amerinds used knapped points to make arrows. What did the arrows look like? What was the shaft material? Fletch is easy I suppose...
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Post by Rockoonz on Sept 2, 2016 20:56:08 GMT -5
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metalsmith
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Post by metalsmith on Sept 3, 2016 5:53:33 GMT -5
Picked up my first knapping injuries just last week in Norfolk, around 3 hours South of here (or 4.5 hours back with securing / re-tying the exhaust). The first cut was accidental, just whacking flint. Then I ID'd that a flake was just asking to come away. This was my first successful targeted strike - you could have shaved with it! Foolishly I decided to carve a skin flake... I would be interested in having a real go after a short period of self-education. It turns out (I discovered after my return) that there's a site, Grimes Graves. Also, check out the Images on Google. That is a 5,000 years old, huge multiple flint mine excavation site, with such good rock that it was transported huge distances; (the term world-wide has been used). Maybe not the new world back then, but apparently has caused some re-evaluation of exactly what we understand of the neolithic period since the assumption was just for a tribal simple existence, not industry, export or international trade. Of course my keen eye had already identified that the black flint I was finding was just soooo black, I just had to have some! Some won't need much work, some to cut... pics later.
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Deleted
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Post by Deleted on Sept 3, 2016 15:19:39 GMT -5
Picked up my first knapping injuries just last week in Norfolk, around 3 hours South of here (or 4.5 hours back with securing / re-tying the exhaust). The first cut was accidental, just whacking flint. Then I ID'd that a flake was just asking to come away. This was my first successful targeted strike - you could have shaved with it! Foolishly I decided to carve a skin flake... I would be interested in having a real go after a short period of self-education. It turns out (I discovered after my return) that there's a site, Grimes Graves. Also, check out the Images on Google. That is a 5,000 years old, huge multiple flint mine excavation site, with such good rock that it was transported huge distances; (the term world-wide has been used). Maybe not the new world back then, but apparently has caused some re-evaluation of exactly what we understand of the neolithic period since the assumption was just for a tribal simple existence, not industry, export or international trade. Of course my keen eye had already identified that the black flint I was finding was just soooo black, I just had to have some! Some won't need much work, some to cut... pics later. Potholes - rockpickerforever do you have pics of the modern version?
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Post by orrum on Sept 3, 2016 18:59:47 GMT -5
Wow u got more tools than me!!#
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Post by Rockoonz on Sept 4, 2016 1:40:58 GMT -5
orrum I made a couple extra pressure flakers in case someone else in the class needs one. I also want to figure out what I like, sure it will get thinned out.
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Post by rockpickerforever on Sept 4, 2016 7:58:45 GMT -5
Picked up my first knapping injuries just last week in Norfolk, around 3 hours South of here (or 4.5 hours back with securing / re-tying the exhaust). The first cut was accidental, just whacking flint. Then I ID'd that a flake was just asking to come away. This was my first successful targeted strike - you could have shaved with it! F Foolishly I decided to carve a skin flake... I would be interested in having a real go after a short period of self-education. It turns out (I discovered after my return) that there's a site, Grimes Graves. Also, check out the Images on Google. That is a 5,000 years old, huge multiple flint mine excavation site, with such good rock that it was transported huge distances; (the term world-wide has been used). Maybe not the new world back then, but apparently has caused some re-evaluation of exactly what we understand of the neolithic period since the assumption was just for a tribal simple existence, not industry, export or international trade. Of course my keen eye had already identified that the black flint I was finding was just soooo black, I just had to have some! Some won't need much work, some to cut... pics later. Potholes - rockpickerforever do you have pics of the modern version? Scott, if I understand you correctly, you're referring to the two artifacts I found? But they are not from Potholes. First is from Indian Pass, second found on our excursion to the North Cady's. Link to threadLink to that thread, more photos
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Erich
spending too much on rocks
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Post by Erich on Sept 4, 2016 9:37:21 GMT -5
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Post by Deleted on Sept 4, 2016 10:01:11 GMT -5
Scott, if I understand you correctly, you're referring to the two artifacts I found? But they are not from Potholes. First is from Indian Pass, second found on our excursion to the North Cady's. Link to threadLink to that thread, more photosNo, Metalsmiths images showed a European version of potholes.
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Post by rockpickerforever on Sept 4, 2016 11:57:25 GMT -5
@shotgunner Potholes, of course! I must have misunderstood.
Here's a few photos I could find of the area. I know I have some better ones somewhere...
The claim was named potholes, for all the divots all over. But there is actually a "Potholes" on the map nearby. Assuming it is named for the actual "potholes" the Native Americans made in bedrock.
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metalsmith
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Member since October 2012
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Post by metalsmith on Sept 4, 2016 12:08:19 GMT -5
Apparently one of the pits is still open (/has been excavated): presumably the one with the hut. It has radiating tunnels but they're closed off for safety. I'll still be keen to get my hands on some more of the really black stuff from the surface though (remote from the historic site of course!).
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metalsmith
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Posts: 1,537
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Post by metalsmith on Sept 4, 2016 12:34:18 GMT -5
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metalsmith
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Posts: 1,537
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Post by metalsmith on Sept 4, 2016 16:17:59 GMT -5
Photo of Norfolk (England) Black Flint and Jasper for your delectation.
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Post by rockpickerforever on Jul 12, 2018 13:37:25 GMT -5
WARNING, old thread! About time it was brought back.
Since there seems to be a resurgence in the interest of knapping points/blades (out of Ohio flint, purdy glass, whatever), I am going to resurrect a thread on knapping that Rockoonz started almost two years. Seems like a good place to add more pics and a link.
A few years ago, I was looking online for information/images on green obsidian. My search turned up this pic...
From the portfolio page of Woody Blackwell's site link . Wonderful eye candy here, he certainly is an expert knapper, proficient at making a variety of different types of points from a wide selection of primo materials.
I know I posted a link to his site sometime in the past, but he has added more photos to it since then. Here's a few he knapped from glass:
Be sure to scroll about halfway down the page to his "Holy Crap" section.
Stunning!
Anyway, I know you all like pics, the more the merrier. Here's the link again. If you don't take a look, you are missing out. Your loss. (And no, I do not know or have any affiliation with this person. Only sharing a few photos of his work, and link to his site.)
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Post by orrum on Jul 12, 2018 15:39:22 GMT -5
Burns Green Obsidian from Glass Buttes.
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Post by rockpickerforever on Jul 12, 2018 16:05:51 GMT -5
Hey, Bill. It's beautiful, no? I have a few pieces of green obsidian I picked up in Q a number of years ago. That's when I went looking for info. At the time, people were telling me there was no such thing as green obsidian... Right.
However, the green obsidian in the first photo in my previous post is from Mexico. I think that Mr. Blackwell has a lot of experience with/and is pretty well versed in obsidians. I think I'll trust what he says. What I have could be the Burns Green from Glass Buttes. The person I bought it from could give me no information on it.
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Deleted
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Post by Deleted on Jul 12, 2018 16:18:29 GMT -5
However, the green obsidian in the first photo in my previous post is from Mexico. I think that Mr. Blackwell has a lot of experience with/and is pretty well versed in obsidians. I think I'll trust what he says. What I have could be the Burns Green from Glass Buttes. The person I bought it from could give me no information on it. I agree, the photo appears to be Green Sheen (from Mexico or wherever) and not truly green obsidian. I wish I could take photos half as good of sheen obsidian Burns Green obsidian actually comes from Harney County (northwest of Burns, closed to collecting for quite a few years), rather than Glass Buttes. There is a greenish obsidian at Glass Buttes, but it is more a medium to dark gray with a green undertone.
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Post by rockpickerforever on Jul 12, 2018 17:14:33 GMT -5
However, the green obsidian in the first photo in my previous post is from Mexico. I think that Mr. Blackwell has a lot of experience with/and is pretty well versed in obsidians. I think I'll trust what he says. What I have could be the Burns Green from Glass Buttes. The person I bought it from could give me no information on it. I agree, the photo appears to be Green Sheen (from Mexico or wherever) and not truly green obsidian. I wish I could take photos half as good of sheen obsidian Burns Green obsidian actually comes from Harney County (northwest of Burns, closed to collecting for quite a few years), rather than Glass Buttes. There is a greenish obsidian at Glass Buttes, but it is more a medium to dark gray with a green undertone.
Thanks, @rocks2dust . Here are two photos of one of the "green rocks" (whatever it is) that I picked up in Q
It is more opaque-ish than translucent. Which is what they say glass would be.
phil said in the post this was previously discussed at forum.rocktumblinghobby.com/thread/53357 there's a sure fire way to find out:
This explanation makes total sense! A older gent in the rock club I used to belong to told us stories of him putting obsidian into a microwave oven where he worked at, and it puffed up. I think he even showed us a few pieces of it. If I recall, it looked something like cristobalite (a high-temperature polymorph of silica, meaning that it has the same chemical formula as quartz, SiO2, but a distinct crystal structure). Cristobalite
Puffed glass! Think of popping popcorn.
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Deleted
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Post by Deleted on Jul 12, 2018 19:00:59 GMT -5
This explanation makes total sense! A older gent in the rock club I used to belong to told us stories of him putting obsidian into a microwave oven where he worked at, and it puffed up. I think he even showed us a few pieces of it. If I recall, it looked something like cristobalite (a high-temperature polymorph of silica, meaning that it has the same chemical formula as quartz, SiO2, but a distinct crystal structure). Your photo appears to be a nice piece of Green Sheen with cristobalite spheres. Sheen obsidians do indeed have some translucency. Burns Green (and Glass Buttes Green) are opaque, however, and do not have any sheen effect. Burns Green is a creamy blue-green color, sometimes with swirls of black. As I said, Glass Buttes Green is also opaque and more of a gray with green undertone and often with black streaks. Both take a great polish. Cristobalite is different than the puffy mess that heated obsidian (especially Apache Tears) makes when heated. That is actually more like pumice/rhyolite, and is caused by expansion of gases and water trapped within the obsidian. Cristobalite is a crystallization of the obsidian either by cooling that was slow enough to allow the silica to begin to form crystals, or because of the age of the obsidian flow. Folks who heat up/explode obsidian are braver than me
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