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Post by Drummond Island Rocks on Sept 21, 2017 19:28:22 GMT -5
This was my first attempt at cabbing this stuff. I took a gamble and bought 40 small slabs that should all produce one cab. This is a bi-product of the old copper mine smelting process in Michigan's Upper Peninsula. The cab is very heavy and has a very metal feel to it. I tried several times with my main camera and could not get a picture I liked. This is just a picture from my phone but it looks decent. The left side is not dark that is a shadow. Need to find a better way to photograph these before I can put any up for sale. This article explains the history of the material. This unusual lapidary material is actually a historic relic of the copper mining era in the Lake Superior district of Michigan’s Upper Peninsula. The ceramic fire bricks that lined the copper ore smelters gradually eroded over the decades of use. The molten copper in the smelters then filled these voids in the bricks. When this great chapter of mining in Michigan ended in the mid 1950s the smelters were torn down and the bricks were shipped off to be re-processed for the value of the copper. Only small amounts of the old bricks were left behind for stone cutters and jewelers to discover. source of the articleThanks for looking Chuck
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,176
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Post by RWA3006 on Sept 21, 2017 20:43:29 GMT -5
That's cool. Reminds me of a pocket watch. I love these odd materials for cabs.
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Post by aDave on Sept 21, 2017 20:45:02 GMT -5
I'm not a cabber, but that is beautiful stuff nonetheless.
Dave
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Post by fantastic5 on Sept 21, 2017 20:48:20 GMT -5
Wow! I really like that material. Your gamble paid off!
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 21, 2017 20:51:06 GMT -5
That's cool shit!
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Post by rockjunquie on Sept 21, 2017 20:51:20 GMT -5
That's one of the nicer ones I've seen. I have a cab of it, but it's not that good. Thanks for showing us.
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Post by vegasjames on Sept 21, 2017 20:58:16 GMT -5
That is really nice looking material.
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Post by Jugglerguy on Sept 21, 2017 21:11:52 GMT -5
I like it a lot, Chuck. You didn’t say whether you were pleased with your gamble. Are you happy to have enough for 39 more?
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Post by Drummond Island Rocks on Sept 22, 2017 5:58:45 GMT -5
I like it a lot, Chuck. You didn’t say whether you were pleased with your gamble. Are you happy to have enough for 39 more? I was able to get a wholesale vendor price on a flat. One of those deals you have to grab when the opportunity is there. I have not seen it for sale at shows before. I think as long as the history is conveyed properly it might sell ok. Just like Fordite and Leland Blue. The story is a big part of what makes those sell locally. Chuck
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Post by toiv0 on Sept 22, 2017 7:11:50 GMT -5
Very nice. Has some of the white in it which is rarer.
You are lucky it was slabbed already, can be a saw killer because of the copper. Broke my auto feed on a 10 inch saw I owned because of the drag and not having cut the material before. Slooooow is the trick. I cut it manually now.
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Post by Drummond Island Rocks on Sept 22, 2017 7:21:19 GMT -5
Very nice. Has some of the white in it which is rarer. You are lucky it was slabbed already, can be a saw killer because of the copper. Broke my auto feed on a 10 inch saw I owned because of the drag and not having cut the material before. Slooooow is the trick. I cut it manually now. Thanks- This stuff has a way higher concentration of copper then I expected. It was difficult just trimming the preforms. Getting a polish on the diamond wheels was difficult too. I ended up using a muslin buff with polish. Chuck
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Post by fantastic5 on Sept 22, 2017 8:22:34 GMT -5
How deep does the copper go? After reading the article, it sounded like it only fills the surface cracks and pits that had developed. Can you see the copper on both sides of the pieces? Curious.
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Post by Drummond Island Rocks on Sept 22, 2017 8:25:22 GMT -5
How deep does the copper go? After reading the article, it sounded like it only fills the surface cracks and pits that had developed. Can you see the copper on both sides of the pieces? Curious. All the way through. The pieces are noticeably heavy. Chuck
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Post by rockjunquie on Sept 22, 2017 9:07:18 GMT -5
There was or is a guy on ebay selling a lot of it. He's the ones selling all the "mohawkite" and other metals he's been collecting.
The cab I have has the white in it, too. I have to say, I like it better without.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 22, 2017 10:20:38 GMT -5
And now, with that original image, I could unlock Chuck's iPhone...
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Post by Drummond Island Rocks on Sept 22, 2017 10:25:14 GMT -5
And now, with that original image, I could unlock Chuck's iPhone... you lost me with that one?
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Post by Drummond Island Rocks on Sept 22, 2017 10:27:20 GMT -5
And now, with that original image, I could unlock Chuck's iPhone... Ahh fingerprint. I heard androids were having issues with facial recognition because people could use someones picture to get into their phones.
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zekesman
Cave Dweller
Member since May 2016
Posts: 637
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Post by zekesman on Sept 22, 2017 10:29:24 GMT -5
This was my first attempt at cabbing this stuff. I took a gamble and bought 40 small slabs that should all produce one cab. This is a bi-product of the old copper mine smelting process in Michigan's Upper Peninsula. The cab is very heavy and has a very metal feel to it. I tried several times with my main camera and could not get a picture I liked. This is just a picture from my phone but it looks decent. The left side is not dark that is a shadow. Need to find a better way to photograph these before I can put any up for sale. This article explains the history of the material. This unusual lapidary material is actually a historic relic of the copper mining era in the Lake Superior district of Michigan’s Upper Peninsula. The ceramic fire bricks that lined the copper ore smelters gradually eroded over the decades of use. The molten copper in the smelters then filled these voids in the bricks. When this great chapter of mining in Michigan ended in the mid 1950s the smelters were torn down and the bricks were shipped off to be re-processed for the value of the copper. Only small amounts of the old bricks were left behind for stone cutters and jewelers to discover. source of the articleThanks for looking Chuck Cool Cool Cool. I have seen it before with white in it. Did not really care for it. This with the black is bad ass. Vic
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 22, 2017 10:29:27 GMT -5
And now, with that original image, I could unlock Chuck's iPhone... Ahh fingerprint. I heard androids were having issues with facial recognition because people could use someones picture to get into their phones. Yeah, all tech is hackable. From pjnand tumbler locks forward
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Post by Drummond Island Rocks on Sept 22, 2017 10:31:10 GMT -5
Ahh fingerprint. I heard androids were having issues with facial recognition because people could use someones picture to get into their phones. Yeah, all tech is hackable. From pjnand tumbler locks forward A hacker would be really disappointed if they spent a bunch of time getting into my phone only to find a bunch of ROCK pictures. Chuck
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