chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Dec 25, 2020 23:01:31 GMT -5
I have a learning curve, but here are my first rocks. Are they all jasper? Picture jasper?
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Post by Peruano on Dec 26, 2020 7:17:58 GMT -5
Its always dangerous to id rocks on the basis of photos, but like picking horse race winners people try all the time. If I had to place a name on your material I'd call it rhyolite. Perhaps even of marine origin. Did it come from a beach? Nice looking batch.
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chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Dec 26, 2020 9:11:48 GMT -5
Thank you! They were all found on my property after the ground had been cleared to build the house. I looked up rhyolite just now. None of these rocks, when they were raw, resembled any of these rocks. I still vote picture jasper, but I would love other's thoughts.
Thank you!
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gatorflash1
spending too much on rocks
Active in Delaware Mineralogical Society, Cabchon Grinding and Polishing, 2 Thumlers B's and a UV-18
Member since October 2018
Posts: 375
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Post by gatorflash1 on Dec 27, 2020 10:04:52 GMT -5
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chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Dec 27, 2020 14:42:01 GMT -5
rockpickerforever, thank you for the video!
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rockhoundmn
noticing nice landscape pebbles
Member since November 2020
Posts: 75
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Post by rockhoundmn on Dec 28, 2020 16:46:35 GMT -5
Very nice bunch of rocks and nicely done first batch! Some of those have some beautiful shine and all are interesting. I'm personally a fan of fracture lines in rocks, not all but some are very cool. I think my fav is the stripy one at about 1:50 in the video - woweeee!
Don't you just love the way they feel to the touch?
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kyoti
has rocks in the head
Member since June 2020
Posts: 542
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Post by kyoti on Dec 28, 2020 17:15:10 GMT -5
Nice tumbles. The material looks very much like what I find here in Dallas and in East Texas. Mostly chert/jaspers and petrified wood with a few nice sugar agates. Some of the jasper has a couple of patterned tan and brown layers and then have cool grey interiors. Discovered this on one batch where I tumbled it too long and the grey appeared. Some of them stay caramel colored or maroon inside.
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chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Dec 29, 2020 14:48:25 GMT -5
Very nice bunch of rocks and nicely done first batch! Some of those have some beautiful shine and all are interesting. I'm personally a fan of fracture lines in rocks, not all but some are very cool. I think my fav is the stripy one at about 1:50 in the video - woweeee! Don't you just love the way they feel to the touch? Thank you! Yes, I love the way they feel and the clink they make when I put one back to pick up another. I turned the sound off because you could hear the tv in the background, but when I make another video, I'm going to turn the tv off and let the relaxing clink sound off. btw, the stripy one is my husband's favorite, too.
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chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Dec 29, 2020 14:51:22 GMT -5
Nice tumbles. The material looks very much like what I find here in Dallas and in East Texas. Mostly chert/jaspers and petrified wood with a few nice sugar agates. Some of the jasper has a couple of patterned tan and brown layers and then have cool grey interiors. Discovered this on one batch where I tumbled it too long and the grey appeared. Some of them stay caramel colored or maroon inside. You're right, Mostly chert/jaspers and petrified wood with a few nice sugar agates. Thanks for the tip on not tumbling them beyond what they need. Did you like the grey that appeared?
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kyoti
has rocks in the head
Member since June 2020
Posts: 542
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Post by kyoti on Dec 30, 2020 9:05:56 GMT -5
I did like the interiors They often have neat swirling patterns. Quite a few of the seemly golden tan sugar agates also turned out to be a surprising greyish purple color. The vast majority of the chert around here is mainly caramel colored with no patterns although it can be filled with shell fossils. Both will take a good shine.
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chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Dec 30, 2020 10:43:43 GMT -5
I did like the interiors They often have neat swirling patterns. Quite a few of the seemly golden tan sugar agates also turned out to be a surprising greyish purple color. The vast majority of the chert around here is mainly caramel colored with no patterns although it can be filled with shell fossils. Both will take a good shine. Would you think that what I am calling picture jasper is really chert? I realize jasper is chert, I just want to call it by the correct name. Are many of the rocks in my video sugar agates?
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kyoti
has rocks in the head
Member since June 2020
Posts: 542
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Post by kyoti on Dec 30, 2020 11:18:43 GMT -5
Normally when I think of picture jaspers, I think of the blue and tan material out of the Pacific Northwest or tan material with dendrites. I could be wrong but I think you have what appears to be Jaspers and Jasp-agates.
The purpley red rock with the black diagonal stripe is what I would call a sugar agate. The more opaque materials are what I would call jaspers. A number of the rocks look like they still have a little bit of the crust on them. The one 2:30 looks like it might have grey agate inside for example. I mainly discovered this on mine by tumbling it longer or when I cut them with the tile saw. Take this with a grain of salt because I've ruined some otherwise good rocks this way too. 😃😬
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Post by Bob on Dec 30, 2020 16:16:01 GMT -5
chandler, I'm in OK and have collected some in TX. Where approx. are you located? Some of the rocks remind me of a hot day in TX walking in a dry creek wash--the colors and patterns look very familiar, though I can't remember where, though I think it was between Ft. Worth and El Paso somewhere.
The stripey one really got my attention too. I have never heard of the term sugar agate before.
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chandler
starting to spend too much on rocks
Member since November 2020
Posts: 105
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Post by chandler on Jan 3, 2021 18:01:13 GMT -5
chandler, I'm in OK and have collected some in TX. Where approx. are you located? Some of the rocks remind me of a hot day in TX walking in a dry creek wash--the colors and patterns look very familiar, though I can't remember where, though I think it was between Ft. Worth and El Paso somewhere. The stripey one really got my attention too. I have never heard of the term sugar agate before. I'm in Bridgeport. I have these in the tumbler now so I look forward to how they turn out in a few weeks.
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Post by Peruano on Jan 3, 2021 18:45:40 GMT -5
Sugar agate is another misnomer for quartzite. I.E. it has a granular texture, not the true microcrystaline, cryptocrystaline structure of agates and their relatives. www.quartzpage.de/gen_rock.html#quartzite
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Post by Bob on Jan 4, 2021 11:41:16 GMT -5
Oh, I can see how sugar agate came about as a term given the appearance of quartzite especially when is has a broken side. You are not far from Decatur/Springtown/Azle where I last explored around due to relatives in Azle. What you found is certainly better as I found not a single rock in that area worth keeping.
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