nemesis21
noticing nice landscape pebbles
Member since August 2017
Posts: 88
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Post by nemesis21 on Aug 7, 2017 11:40:12 GMT -5
Found these this summer while looking for lake superior agates in central Minnesota. I figured they were chert because the outside of the rock was white, which I assumed was limestone, but after cleaning them up a bit I noticed little agate like tubes running through them. I guess basalt host rock can come in a white variety as well, but it's probably not very common here. Can chert have tubes like this running through it or is this another form of agate? I know there are "cold water agates" in Minnesota as well, but I always attributed them to fossilized marine creatures like coral. I'm thinking about getting a loupe too look closer at it, but any guidance would be appreciated. I have a couple like this at around 5+ lbs and a few smaller ones that I could post pictures of as well. Also, sorry about the bad pictures my camera is pretty old and apparently I can't sit still. Full Album: imgur.com/a/nytlz Rock #1: Rock #2: Rock #3: Rock #4: Rock #5:
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Post by fernwood on Aug 7, 2017 19:43:11 GMT -5
Hi and welcome. Since some of this material is very similar to my Wisconsin finds, I saved one of your images and edited it. I can see some agate type formations. Locals call this agatized Wisconsin Jasper. Maybe this detail photo will help others here come up with a better ID.
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nemesis21
noticing nice landscape pebbles
Member since August 2017
Posts: 88
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Post by nemesis21 on Aug 7, 2017 20:26:31 GMT -5
Huh, that's interesting. Agatized jasper sounds very similar to what I imagine a moss agate to be. I wonder if there's a scientific difference or if it's just common names.
By the way, if you right click a photo and view it in a new browser window(or follow the imgur link) you can see it at a better resolution, I just scaled them down to reduce clutter/load time.
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Post by coloradocliff on Aug 7, 2017 21:03:30 GMT -5
Be a little easier if we could see what's inside instead of a rind. Can you window it, slab or maybe coarse tumble some of the outside rind off? fernwood is real good at that area and also wigglinrocks knows lot of your mudpuppy rocks.
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Post by wigglinrocks on Aug 7, 2017 21:22:00 GMT -5
Cool rocks , cut em . Look to be jasp/agates as fernwood mentioned .
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nemesis21
noticing nice landscape pebbles
Member since August 2017
Posts: 88
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Post by nemesis21 on Aug 7, 2017 21:28:36 GMT -5
Unfortunately that's beyond my capabilities at the moment. I'm more of a rough stone collector(lake superior agates) at the moment. These were just some odd ones i picked up in case I ever felt like picking up flint knapping(before I cleaned them off). The majority of the pictured rocks are probably what you would see with a window cut as well, aside from the yellow one with the big pit in the middle.
Don't get me wrong, I am curious. Just not curious enough to drop a bunch of money it(yet).
Thanks
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Post by wigglinrocks on Aug 7, 2017 21:33:40 GMT -5
How big are those ? Keep collecting them , look to have some potential to be quite nice on the inside . Or ya could send the across the east border .
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nemesis21
noticing nice landscape pebbles
Member since August 2017
Posts: 88
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Post by nemesis21 on Aug 7, 2017 21:45:20 GMT -5
The first, the big yellow one, and last one are about 6 lbs each the others are maybe 2-3 lb. Haha, yea I'll keep picking them up if I can find em. They keep building more housing developments around here and I get to find some interesting stuff.
If I ever manage to cut em I'll put some pictures up.
Cheers
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Post by wigglinrocks on Aug 7, 2017 21:50:31 GMT -5
Good location you have for a good variety of real nice rock and those are some good slabbers .
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Post by coloradocliff on Aug 8, 2017 0:42:33 GMT -5
Yeah find a way to cut some of those. Too interesting looking not to know what's in their stony little hearts.
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Post by fernwood on Aug 8, 2017 6:32:58 GMT -5
Agree with the above. The inside is often very different than the outside. Usually much better, even for ones that are mostly solid color.
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Post by fernwood on Aug 8, 2017 9:39:17 GMT -5
Be a little easier if we could see what's inside instead of a rind. Can you window it, slab or maybe coarse tumble some of the outside rind off? fernwood is real good at that area and also wigglinrocks knows lot of your mudpuppy rocks. Not to hijack thread, But thank you coloradocliff for the vote of confidence. I have been trying to learn and grow so much and having you say I was good in the area meant the world to me.
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Post by coloradocliff on Aug 8, 2017 9:43:30 GMT -5
Be a little easier if we could see what's inside instead of a rind. Can you window it, slab or maybe coarse tumble some of the outside rind off? fernwood is real good at that area and also wigglinrocks knows lot of your mudpuppy rocks. Not to hijack thread, But thank you coloradocliff for the vote of confidence. I have been trying to learn and grow so much and having you say I was good in the area meant the world to me. Hehehehe Yeah no thread jackin girl.. Yep sound like Rich, sometimes Dale and I.. You and Rich know your area. Like the learning part although I will never own work in the rock business. Lke the uniqueness of rock. Have a great day.
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Post by fernwood on Aug 8, 2017 14:34:40 GMT -5
Looked at the album. #4 there has a ton of potential. That would be the one I would recommend cutting. Lots of small agates on the skin and who knows what is inside. Also the variety of colors hints to grand things for those who look for them.
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