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Post by Jugglerguy on Oct 17, 2013 21:27:37 GMT -5
I just took my jaspelite out of the Lot-O. It didn't turn out great. There is some undercutting and it just didn't get all that shiny. I might redo this batch. I asked Steve (NorthShoreRocks) for some advice since he has some incredible pictures of jaspelite here, but I didn't follow it. He only does one day in 220, one day in 500, and then polish and burnish. I mostly stuck to my normal procedure. I did two days each in 220, 500, 1000, and polish. I think shorter times would have reduced the undercutting. The hematite wore more than the jasper. My rough came from two sources: Jasper Knob in Ishpeming, MI, and a quarry in Marquette, although I don't think the quarry rock is from Marquette. The quarry rock was more specular hematite, while the Jasper Knob stuff was not. Here's a picture of Jasper Knob. It's a large hill made out of Jaspelite right in the middle of the town of Ishpeming. It's really cool. I just picked up a few loose pieces. Some of the rough from Jasper Knob: [/url
Here's some of the quarry rock rough. This stuff is sparkly and some of the sparkles come off, so I didn't have much hope for it. It didn't come out smooth, there's definitely some texture, but I really liked it the best.
The slurry was very red: Here's the whole batch: Some of the specular hematite. The biggest one was more smooth than the others, which were sort of rough, but in a smoothish way. A roughish one: Some others, mostly or all from Jasper Knob:
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Oct 17, 2013 21:38:37 GMT -5
Still looks pretty nice. Your batch of rough may have been more porous than some because I've tumbled a few pieces that folks have given me in the past and it really took a good shine. A lot of jasper is the same way, it's just too bricky or earthy to shine up super good....Mel
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Post by pghram on Oct 17, 2013 21:43:08 GMT -5
I think it came out really great & from the first few photos, it looks like you won't run out of rough any time soon.
Rich
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mibeachrocks
starting to spend too much on rocks
Member since September 2013
Posts: 198
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Post by mibeachrocks on Oct 18, 2013 8:52:56 GMT -5
Great job on these. I have a feeling they will disappear into your son's room very soon.
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Post by Hard Rock Cafe on Oct 18, 2013 9:49:14 GMT -5
Yeah, the shaft iron miners hated it when they hit pockets of jasper (particularly Mary Ellen) because it was so much harder than the hematite, so yes, it will undercut. In fact you can see it in the layered weathering in your photos. If you can run a load of just Jasper Knob stuff and for shorter time, it should help.
All the red in your slurry comes from the hematite, not the jasper. You did well considering the mixed load. BIF can be very pretty.
Chuck
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Post by pghram on Oct 18, 2013 9:51:34 GMT -5
It looks like it would make some great cabs & you could probably keep the undercutting to a minimum.
Rich
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rolanstones
noticing nice landscape pebbles
Member since August 2013
Posts: 95
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Post by rolanstones on Oct 20, 2013 10:47:03 GMT -5
I think it looks great Rob. Such interesting material and the specular looks like a star field. You are very welcome to dispose of any you don't like at my house........
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Tom
fully equipped rock polisher
My dad Tom suddenly passed away yesterday, Just wanted his "rock" family to know.
Member since January 2013
Posts: 1,557
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Post by Tom on Oct 20, 2013 20:33:11 GMT -5
Looks like a pretty decent tumble
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Oct 20, 2013 22:24:54 GMT -5
I love that you described them as "rough, in a smoothish way".
That is really definitive. lol
Nice images, thanks for sharing.
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panamark
fully equipped rock polisher
Member since September 2012
Posts: 1,343
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Post by panamark on Oct 23, 2013 21:42:22 GMT -5
>sort of rough, but in a smoothish way.
? ? ? ? Wow, I guess I can say I am pretty bright in a subdued way. You should be a teacher - oh yeah. LOL, just funnin ya my friend.
Sometimes I find I learn a lot/most from the rocks that I would rate as failures. So it is good to experiment sometimes with the unknown rocks. Thanks.
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Post by Jugglerguy on Oct 23, 2013 21:46:38 GMT -5
You'd have to feel the rocks to understand. I described it perfectly!
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NorthShore-Rocks
fully equipped rock polisher
Member since December 2008
Posts: 1,004
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Post by NorthShore-Rocks on Oct 24, 2013 16:40:02 GMT -5
You did good Rob! As others have said... it's all in the mix of Hematite when tumbling Jaspelite. There's a yellow version too!
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Post by Hard Rock Cafe on Oct 24, 2013 18:04:45 GMT -5
Steve! Where have you been?
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Post by Jugglerguy on Oct 24, 2013 18:56:16 GMT -5
Hey Steve, thanks for the input. I'm going to give it another try when the tumbler is free. I think I can do better.
Rob
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Oct 29, 2013 14:20:59 GMT -5
Great source to finished tumble documentary... It is very rewarding to find the product you work. Good luck on the next tumble session with Jaspelite.
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