jamesp
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Post by jamesp on Aug 2, 2015 17:25:29 GMT -5
First 4 are cool rocks from Rob. Then a dallasite. Then 12 gneiss. Last 10 are granite. Only been run in SiC 80 and wet. Rob's unakite and the gneiss will polish easily. The rest a problem. Gneiss and granite from local railroad. The whole batch Individual rocks www.flickr.com/photos/67205364@N06/sets/72157656279758379
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showet
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Post by showet on Aug 2, 2015 20:20:41 GMT -5
I would like to see these when you have finished them. I really like the variety.
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Post by captbob on Aug 2, 2015 22:22:15 GMT -5
Your dallasite is actually a flowerstone - also from bcrockhound. I ran some with my dallasite and while it shaped up just fine, it didn't take near the level of polish that the dallasite did. At least it didn't have the undercutting problems that the dallasite presents.
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jamesp
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Post by jamesp on Aug 3, 2015 1:53:47 GMT -5
I would like to see these when you have finished them. I really like the variety. That granite is hard to see what it would look like in the rough. Now that they are smooth their texture and color is visible showet.
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jamesp
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Post by jamesp on Aug 3, 2015 1:56:54 GMT -5
Your dallasite is actually a flowerstone - also from bcrockhound. I ran some with my dallasite and while it shaped up just fine, it didn't take near the level of polish that the dallasite did. At least it didn't have the undercutting problems that the dallasite presents. The Dallasite did under cut. Seems like the dark matrix was softer. bc did send the Flowerstone too, forgot that it had a different name.
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Post by captbob on Aug 3, 2015 8:36:47 GMT -5
I has one of the many brown colored parts (there is more than one brown / tan mineral in dallasite) undercut. The black was fine for me.
Wish I knew what all was in this stuff, but - guesses aside - I'm not sure we will ever know.
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jamesp
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Post by jamesp on Aug 3, 2015 10:56:12 GMT -5
I has one of the many brown colored parts (there is more than one brown / tan mineral in dallasite) undercut. The black was fine for me. Wish I knew what all was in this stuff, but - guesses aside - I'm not sure we will ever know. Looking closely at that box of bc's there was a lot of variation in those rocks. washingtonrocks would probably know what flowerstone and dallasite is composed of. Looks like the black is basalt, the other stuff melted or crystallized into it. You had luck with polish on the black stuff ?
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Post by captbob on Aug 3, 2015 14:30:55 GMT -5
No problem on the black. Not quite obsidian reflections, but nice and shiny.
I recall a rather lengthy discussion on the composition of dallasite, but in the end I only remember best guesses and speculation.
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Post by washingtonrocks on Aug 3, 2015 14:37:51 GMT -5
bcrockhound is probably better informed than I am on these rocks, but I do know the basalt can be highly variable in its hardness based on mineral content. If it's high in iron it's more susceptible to weathering due to oxidation, which in turn makes it softer. That's probably why you're finding multiple shades of brown...different stages of the basalt getting softer and weathering out. The harder, glassier areas of basalt are probably richer in sodium or silica. That's about all I can contribute. Other than to say the Flowerstone contains well-defined feldspar crystals, and the Dallasite is a quartz--pumpellyite-epidote breccia, but you guys probably already knew that.
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Post by washingtonrocks on Aug 3, 2015 14:40:43 GMT -5
jamesp, that's some of the nicest, salmon colored granite I've seen in a long time. Can't wait to see what your Midas touch can do with these tricky rocks!
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jamesp
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Post by jamesp on Aug 3, 2015 15:50:24 GMT -5
bcrockhound is probably better informed than I am on these rocks, but I do know the basalt can be highly variable in its hardness based on mineral content. If it's high in iron it's more susceptible to weathering due to oxidation, which in turn makes it softer. That's probably why you're finding multiple shades of brown...different stages of the basalt getting softer and weathering out. The harder, glassier areas of basalt are probably richer in sodium or silica. That's about all I can contribute. Other than to say the Flowerstone contains well-defined feldspar crystals, and the Dallasite is a quartz--pumpellyite-epidote breccia, but you guys probably already knew that. "Flowerstone contains well-defined feldspar crystals, and the Dallasite is a quartz--pumpellyite-epidote breccia, but you guys probably already knew that." Thanks washington. This guy did not know that. Serious cool rock. I have been sneaking around in that creek in your back yard , don't tell. That granite common; they make road gravel out of it, $9- 12/ton. The run boulders thru crushers. Roads and rail tracks, pick away. The rail system has the best. Probably brought in from the NE part of Georgia where granite is real nice.
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Post by Drummond Island Rocks on Aug 3, 2015 16:50:46 GMT -5
When to a Lake Huron beach this weekend that was full of rocks. It is always a huge challenge to resist picking up tons of the pretty granites that look so good on a wet beach. I know better though. I still occasionally pick up nice pieces that are large enough to cab and slab. Not sure how many people have tumbled the dallasite but I gave it a try. I did not get any flowerstone though. tumbled dallasiteChuck
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jamesp
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Post by jamesp on Aug 3, 2015 18:05:14 GMT -5
When to a Lake Huron beach this weekend that was full of rocks. It is always a huge challenge to resist picking up tons of the pretty granites that look so good on a wet beach. I know better though. I still occasionally pick up nice pieces that are large enough to cab and slab. Not sure how many people have tumbled the dallasite but I gave it a try. I did not get any flowerstone though. tumbled dallasiteChuck Full of resentment that you and captbob can polish this stuff. It's not fair. LOL Win some/lose some. They look very shiny Chuck and congrats. As far as granite, it makes fine cabs, right ? Shiny Dallasite:
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Post by gingerkid on Aug 3, 2015 19:21:43 GMT -5
They look purdy darned good, jamesp, and have a nice shine. I like your pink railroad granite and flowerstone the mostest™. Very nice dallasite, Drummond Island Rocks, and enjoyed taking a peek at the others on your page, too.
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jamesp
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Post by jamesp on Aug 3, 2015 19:42:00 GMT -5
They look purdy darned good, jamesp, and have a nice shine. I like your pink railroad granite and flowerstone the mostest™. Very nice dallasite, Drummond Island Rocks, and enjoyed taking a peek at the others on your page, too. known a s a classic wet shine Jan, because they are wet Cheatin, cheatin in away. They would make some fine cabs.
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bcrockhound
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Post by bcrockhound on Aug 16, 2015 0:21:47 GMT -5
Nice to see some of that stuff! Washington rocks knows as much/more than me. I read somewhere dallasite was formed as underwater pillow lava, and I rolled with that because it made it sound cooler to me. There is too much variation to really nail it down, though. A lot of pieces seem to mix with amygdaloidal basalt and this soft light green stuff, which are also all over the Vancouver Island beaches. Then there are white/blue specks, which seem like softer material, in some pieces.
Man, I miss dallasite. I'd love to go out on a stormy day rockhounding again. I've got a big pile of everything good I had left back in my parents' backyard in Vancouver. I started finding some huge flowerstone all in this one river. What an awesome workout dragging those rocks up to my car was.
I'm up here reporting from Iqaluit, Nunavut. There is a lot of quartz here but mostly boring rock. Quite a few bones out on the land though, got a little collection going. Been living out of a suitcase for several months now. Can't wait to be in a warm place to hound and tumble again. Not sure when that great day will come. Will keep getting my rock fix checking out this site in the meantime. Thanks!
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jamesp
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Post by jamesp on Aug 16, 2015 6:09:49 GMT -5
bcrockhound-Iqaluit, Nunavut is probably on the chilly side. Where is your next destination ? Suggesting Kamloops B.C. Close to home and a crazy town in the warmer zone. Always good to find out where you do not want to be. Sounds like warmer horizons in your future. There is such thing as too hot too. 95F and high humidity all summer here. Sorry you are not located in a rock hunter's paradise, sounds like you got spoiled by Vancouver area. Spoiled a lot of RTH people with the Dallasite you found too. Thanks for mine. Post your next project location.
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bcrockhound
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Post by bcrockhound on Aug 17, 2015 8:42:09 GMT -5
bcrockhound-Iqaluit, Nunavut is probably on the chilly side. Where is your next destination ? Suggesting Kamloops B.C. Close to home and a crazy town in the warmer zone. Always good to find out where you do not want to be. Sounds like warmer horizons in your future. There is such thing as too hot too. 95F and high humidity all summer here. Sorry you are not located in a rock hunter's paradise, sounds like you got spoiled by Vancouver area. Spoiled a lot of RTH people with the Dallasite you found too. Thanks for mine. Post your next project location. I'm not quite sure where the future will take me right now. I started in Yellowknife, NT, got stationed in Fort Simpson, and now I'm here in Nunavut. I'd like to move back to the south eventually, and I dream of moving much farther south some day, like Arizona/Texas/Mexico. I want to be in a place with a lot of sunshine. I quite like the interior of BC. I'd love to spend more time in places like Princeton, Rossland, Vernon etc. Also supposedly good hounding areas. However, I think I have grass is always greener disease, and once I've been in one place for two weeks I usually want to move on. We still have ice in the bay and on the beach here. It's been a cold summer, but we've had a few t-shirt and jeans days recently. The 24-hour light from June is quickly disappearing. The north is not a bad stop money and career wise, though it's not too kosher to say that out loud. There are lots of bones to find on the land up here, but unless you have an ATV, it's hard to go anywhere because there are no roads leaving town.
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jamesp
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Post by jamesp on Aug 17, 2015 8:49:28 GMT -5
What kind of bones bcrockhound ? Folks into drinking up there ?
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bcrockhound
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Post by bcrockhound on Aug 19, 2015 9:02:16 GMT -5
What kind of bones bcrockhound ? Folks into drinking up there ? I'm not 100% sure. I've found a bunch of vertebrae with each piece being about the size of a fist. Lots of other random smaller bones too. I got to eat some narwhal, which is neat. Like buttery, chewy fish. Yes, folks are into drinking here, and smoking. I find it kind of a dark thing though. Alcohol abuse is off the charts. It's actually turned me completely off drinking. It's not like what drinking means back in Vancouver. It's like a real drug problem here.
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