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Post by fernwood on Aug 19, 2019 7:28:38 GMT -5
Sorry I have been flooding the ID section lately. These will be my last for a while. They were in a can of Lake Superior Agates. The first is more white than photos show. Is lighter weight for a rock this size. I have seen thi before somewhere, but do not remember what it is. This one intrigues me. I soaked it overnight then gave a good scrubbing. It is soaking some more. Do not know if the surface green is algae or the rock color. I have never seen a Laker enclosed in a crystal formation like this, but who knows? This photo is a little darker than the rock.
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lookatthat
Cave Dweller
Whatever there is to be found.
Member since May 2017
Posts: 1,360
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Post by lookatthat on Aug 19, 2019 10:10:07 GMT -5
I wonder if the top one is misplaced howlite?
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Post by fernwood on Aug 19, 2019 10:40:17 GMT -5
Someone else on the RTH Facebook page said it was snakeskin agate. I really do not know. Waiting for Billy, the master of Lake Superior rocks to give his thoughts.
I have collected Lake Superior rocks from both the North and South Shores since the late 1980's and never seen anything like the white one.
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Post by MsAli on Aug 19, 2019 11:13:29 GMT -5
The second one reminds me of Datolite I've seen. It's really hard to tell from the pictures
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 19, 2019 11:15:24 GMT -5
Datolite was my first reaction, too. Both could be datolite or something related.
BTW, the green would be the remnants of copper oxides from the inside of the basalt vesicle in which the nodule formed, rather than algae. Sometimes found in datolite and other copper-bearing nodules.
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Post by wigglinrocks on Aug 19, 2019 12:04:01 GMT -5
The first one looks to have a typical Greenstone pattern , missing the green though .
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Post by fernwood on Aug 19, 2019 12:52:08 GMT -5
The first one looks to have a typical Greenstone pattern , missing the green though . That was my first thought. Checked out DAtolite and could not find any photos of white rocks with this pattern.
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Post by MsAli on Aug 19, 2019 13:13:18 GMT -5
The 1st one reminds me also of greenstone without the green Might be one to take a window off and see what's inside
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Post by fernwood on Aug 19, 2019 13:32:16 GMT -5
The first one skins is only skin deep. Flashlight is a blue LED Military/Police one with a 1/4 mile output.
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Post by MsAli on Aug 19, 2019 13:48:03 GMT -5
Do you have a UV light?
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Post by MsAli on Aug 19, 2019 13:49:14 GMT -5
Maybe even take you dremel to a piece of it and see how it polishes
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Post by fernwood on Aug 19, 2019 13:52:27 GMT -5
No UV. Don't want to window it until I know what it is.
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Post by rockpickerforever on Aug 19, 2019 16:20:51 GMT -5
Someone else on the RTH Facebook page said it was snakeskin agate.
I agree with snakeskin.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 19, 2019 21:13:08 GMT -5
Still could be datolite. While they both formed inside basalt vesicles and thus can have similar patterns, it is easy enough to tell them apart (datolite is softer and reacts to acid). I don't think you'd be hurting the value if you halved it. Save some of the dust for an acid test.
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Post by wigglinrocks on Aug 19, 2019 21:27:00 GMT -5
And it does vary from translucent to opaque .
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Post by fernwood on Aug 20, 2019 5:30:05 GMT -5
Snakeskin it is. Thanks.
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Post by fernwood on Aug 20, 2019 6:19:49 GMT -5
The second one appears to be Datolite. I looked at some info on this interesting rock. Did not see any photos of ones with the agate lines.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,630
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Post by NRG on Aug 22, 2019 10:00:54 GMT -5
I wonder if the top one is misplaced howlite? I don't know what it is. I do know howlite doesn't look like this. Because I live near a classic California howlite locality, I see tons of it at garage sales and gem shows. Looks quite different. Sorry that I'm not more helpful with an identification. Best wishes
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pizzano
Cave Dweller
Member since February 2018
Posts: 1,390
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Post by pizzano on Aug 22, 2019 10:47:57 GMT -5
I wonder if the top one is misplaced howlite? I don't know what it is. I do know howlite doesn't look like this. Because I live near a classic California howlite locality, I see tons of it at garage sales and gem shows. Looks quite different. Sorry that I'm not more helpful with an identification. Best wishes If that area is the old Sterling Borax mine, is Tick Canyon still a good place to find Agate and Howlite deposits worth hunting......? We are going to be in that area (Santa Clarita/Saugus) next month for a friends daughter wedding.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,630
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Post by NRG on Aug 22, 2019 14:02:16 GMT -5
I don't know what it is. I do know howlite doesn't look like this. Because I live near a classic California howlite locality, I see tons of it at garage sales and gem shows. Looks quite different. Sorry that I'm not more helpful with an identification. Best wishes If that area is the old Sterling Borax mine, is Tick Canyon still a good place to find Agate and Howlite deposits worth hunting......? We are going to be in that area (Santa Clarita/Saugus) next month for a friends daughter wedding. It is. However, I've never been. Tick Cyn Howlite is the classic source but I'm told that there is none left. And I didn't even know it had agate. Lol Lemme know and we can meetup
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