weaselguys
having dreams about rocks
Member since September 2020
Posts: 68
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Post by weaselguys on Sept 20, 2020 15:59:58 GMT -5
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polaszko
having dreams about rocks
Member since August 2020
Posts: 58
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Post by polaszko on Sept 20, 2020 17:48:34 GMT -5
Congratulation great founds - but speciment on photo 3 isn't bubbling agate, it looks like fossiled coral. Also On last three photo you miss - it looks like plutonic rock, ryolite or granite or porphyre. Also don't worry about hydrochloric acid - it will not eat silica, only some others minerals, but for me those doesn't need cleaning.
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weaselguys
having dreams about rocks
Member since September 2020
Posts: 68
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Post by weaselguys on Sept 20, 2020 19:07:16 GMT -5
On the last one I have both ryolite and porphyre here and this thing looks nothing like them I don't know about plutonic rock- maybe. As to the third one I didn't think of fossilized coral as we have some of that from the local area and it looks different. I will try for better pics of those two.
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Post by Peruano on Sept 21, 2020 7:23:01 GMT -5
Much depends on how experimental you want to be in developing the specimen. I have on several occasions trimmed similar material with the saw, touched up the edges with the grinder, and then worked it in the vibratory tumbler. Yes the vibe will reduce the surface textures convex bumps but once in awhile with a nice effect. Certainly by taking off the rough edges the specimen has a more comfortable feel for wearing, handling, or display. One rock might have significant algae and it may deserve a soak in dilute bleach, and I agree, acid will not ruin them. But all acids are not alike, some leave a salt that is hard to remove and others are less likely to do so.
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weaselguys
having dreams about rocks
Member since September 2020
Posts: 68
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Post by weaselguys on Sept 24, 2020 8:37:04 GMT -5
I got better pics of the coral showing it's color, my other pics didn't turn out good.
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Post by fernwood on Sept 26, 2020 8:00:14 GMT -5
The bubbly chalcedony ones look like desert chalcedony to me. Can lose a lot of mass when tumbled in a rotary.
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weaselguys
having dreams about rocks
Member since September 2020
Posts: 68
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Post by weaselguys on Sept 27, 2020 21:09:44 GMT -5
i think I will leave them as is.
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betojdesigns
starting to spend too much on rocks
Member since September 2020
Posts: 114
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Post by betojdesigns on Oct 3, 2020 0:43:39 GMT -5
Wow, those are so cool. Where ever did you find that ? I’ve seen the ‘bubbly texture’ you are referring to called Botryoidal, meaning grape like structure.
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weaselguys
having dreams about rocks
Member since September 2020
Posts: 68
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Post by weaselguys on Oct 3, 2020 16:49:26 GMT -5
In the pryor mtns in Montana
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Post by drocknut on Oct 3, 2020 18:11:31 GMT -5
Those look cool, I would leave them as is too. I have never heard of coral in the Pryor Mountains area but I suppose anything is possible. I'd say it's safe to call all of them chalcedony except for the mystery "ball" that looks like a conglomerate of quartz and jasper rolled into a ball. There is agate in the Pryor Mountains but the stuff I've seen from there had more fortification showing. Dryhead Agate comes from the Pryor's I believe as does Bear Canyon Black and White Agate. Although both of those are pretty rare to find these days.
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Oct 3, 2020 18:43:28 GMT -5
That last pic in the first post looks like petrified poo that dropped on a branch when it was young.
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