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Post by snowmom on Jul 20, 2014 8:15:30 GMT -5
I don't seem to have much luck pulling up photos of Dallasite, nor is there much info in my searches. I thought maybe it had some other name that would give me a better idea of what it is. I suspect I have a few chunks here from a local beach... must've been brought in by the glaciers, or is named something else in other parts of the world, but I have not run across that name yet.
this is not as hard as the basanite piece I found a while ago, and there is some undercutting on the surface with the white stuff , I used 60 grit silica sand paper on it and the dust is green, so the color seen here is staining and wear. Looks like feldspar inclusions and maybe something else? Since this photo gave it an acid treatment and it turned blue grey and got rid of a lot of the staining. I am hoping maybe surface polishing it will get rid of the rest of the stains and make it shiny. There is a lot going on there.
Anybody work with dallasite and able to show me photos? Or if I am barking up the wrong tree ( barking down at the wrong rock?) straighten me out! thanks for any and all input. The rock is about 6x9x6 inches |
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Post by manofglass on Jul 20, 2014 10:55:58 GMT -5
Now that I am off my phone it's a good photo nice patterns in the stone
walt
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Jul 20, 2014 12:03:47 GMT -5
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Post by snowmom on Jul 20, 2014 19:28:15 GMT -5
Thanks, that helps. the link with those images is about the only one I could find.
don't have a way to cut it (yet) but have been working on face polishing it... it is getting very much darker with blue grey and white inclusions/porphyry. And it is much harder than I thought. Silica sandpaper barely moves it. Gotta switch to something with more bite. I'll post a picture
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bcrockhound
spending too much on rocks
Member since June 2014
Posts: 418 
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Post by bcrockhound on Jul 20, 2014 20:27:43 GMT -5
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Post by snowmom on Jul 21, 2014 5:22:46 GMT -5
BCrockhound, that helps a lot! Mine is about the same grey green and is black and white in spots... still, even if it was much the same, not coming from the same place I'd have to call mine Huronite or something. That Dallasite is pretty stuff. Is it real hard to work with because of the differing colors? What is the white stuff made of?
As always, pictures raise at least as many questions as they answer... thanks!
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bcrockhound
spending too much on rocks
Member since June 2014
Posts: 418
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Post by bcrockhound on Jul 21, 2014 11:04:16 GMT -5
BCrockhound, that helps a lot! Mine is about the same grey green and is black and white in spots... still, even if it was much the same, not coming from the same place I'd have to call mine Huronite or something. That Dallasite is pretty stuff. Is it real hard to work with because of the differing colors? What is the white stuff made of? As always, pictures raise at least as many questions as they answer... thanks! I've just begun my journey into this hobby but I have definitely had some undercutting issues with Dallasite. It's workable though. If the wiki description of Dallasite is right, I believe the white would be quartz, as the other parts of it are altered basalt, epidote and pumpelleyite. That said, is it normal for quartz to have a blue hue? Many of my pieces do. Glad to have a chance to post some of my pictures. Thanks for asking. I'm just happy there's interest in Dallasite - doubt 99% of the population here on the island even know what it is! |
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Jul 21, 2014 18:37:06 GMT -5
Here are some pics of stuff I find on Vancouver Island... Vancouver Island is already on the short list of places to visit soon to chase steelhead. With rocks like that I will be trying to push it forward even sooner. What else is typical - jade? I will definitely check your blog. Thanks for sharing. Good thread snowmom - learn something every day...except when I log into RTH - then I learn a whole lotta stuff. Cheers |
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bcrockhound
spending too much on rocks
Member since June 2014
Posts: 418
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Post by bcrockhound on Jul 21, 2014 19:20:07 GMT -5
Here are some pics of stuff I find on Vancouver Island... Vancouver Island is already on the short list of places to visit soon to chase steelhead. With rocks like that I will be trying to push it forward even sooner. What else is typical - jade? I will definitely check your blog. Thanks for sharing. Good thread snowmom - learn something every day...except when I log into RTH - then I learn a whole lotta stuff. Cheers Try the ocean too if you like fishing (and are able to) - my girlfriend and I went out on our first day this summer and were hitting big Chinook every few minutes. They are swarming in the Strait of Georgia right now it seems. I know jade is around here but my identification game is not up to snuff yet. I also find Flowerstone but it's less common than Dallasite, still should be able to get a piece or two on any beach trip in the right area. There are other jaspers (red, poppy) but less common. I've still barely explored what this island has to offer - have yet to find rhodonite but badly want to. There's a pretty banded green rock common here, but I don't know if it's of any lapidary value. You won't need much help to find Dallasite on the east coast beaches but I can point you to some of my favourite spots if you'd like. |
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Jul 21, 2014 22:56:26 GMT -5
Thanks bcrockhound....this year is supposed to be epic for the fall run 'nookies, glad you got into them. Will let you know when we venture forth (probably not till next year). Cheers |
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