jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 20, 2017 14:58:21 GMT -5
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Post by MrP on Feb 20, 2017 15:13:16 GMT -5
jamesp You sure know what you are doing.............................................MrP
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ubermenehune
spending too much on rocks
Member since March 2016
Posts: 293
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Post by ubermenehune on Feb 20, 2017 15:16:54 GMT -5
That is dope.
Wifey probably wouldn't sign off on an industrial oven in the man cave.
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Post by Pat on Feb 20, 2017 15:58:56 GMT -5
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doublet83
starting to spend too much on rocks
Member since March 2016
Posts: 118
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Post by doublet83 on Feb 21, 2017 10:04:59 GMT -5
Thanks for showing your process!
Seems like a lot of heat treated rocks turn darker red or brown. Also seems to me the color gets a little blotchy. Its helpful seeing more of these to know what an altered rock looks like (I hate buying the unnatural ones by accident).
I wonder if something like this (http://www.ebay.com/itm/Precious-94g-Banded-agate-Madagascar-xlarge-tumbled-beautiful-patterns-/322425598351?hash=item4b1210318f:g:T8QAAOSwx6pYpeyJ) has been heat treated, dyed, or chemically altered?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:06:28 GMT -5
Tricky to cook rock with a torch Pat. The rock often fires little chips at you. You have a fine color change. Mookite a hot subject for heat treating. Well done !
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:11:05 GMT -5
Thanks for showing your process! Seems like a lot of heat treated rocks turn darker red or brown. Also seems to me the color gets a little blotchy. Its helpful seeing more of these to know what an altered rock looks like (I hate buying the unnatural ones by accident). I wonder if something like this (http://www.ebay.com/itm/Precious-94g-Banded-agate-Madagascar-xlarge-tumbled-beautiful-patterns-/322425598351?hash=item4b1210318f:g:T8QAAOSwx6pYpeyJ) has been heat treated, dyed, or chemically altered? The heat usually acts on the iron in a stone. rule of thumb color changes: yellow to orange orange to red red to deeper red or brown lavender to purple clear to white gray due to salt to jet black Many rocks do the unexpected. Depends on metallic salts and other compounds. Yes, classic heated colors. Madagascar is rich in red clay and iron.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:14:51 GMT -5
That is dope. Wifey probably wouldn't sign off on an industrial oven in the man cave. A turkey baster is all it takes. Easy to sneak in.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:19:49 GMT -5
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:25:53 GMT -5
This is the next batch of Pasco county corals to be cooked. From a tiny creek that cut deep into the old ocean bottom. This batch will be 80 pounds instead of the above 6 pound batch. These photos are before treatment. Note boring colors...these should make a show. corallites From this (jungle) creek in middle Florida Adjacent orange farm has a coral gate. Got to get permission to his farm. Note big coral has pith center. Simple, collect less than 4 pounds coral, they are usually solid.
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Post by vegasjames on Feb 21, 2017 10:35:47 GMT -5
Thanks for showing your process! Seems like a lot of heat treated rocks turn darker red or brown. Also seems to me the color gets a little blotchy. Its helpful seeing more of these to know what an altered rock looks like (I hate buying the unnatural ones by accident). I wonder if something like this (http://www.ebay.com/itm/Precious-94g-Banded-agate-Madagascar-xlarge-tumbled-beautiful-patterns-/322425598351?hash=item4b1210318f:g:T8QAAOSwx6pYpeyJ) has been heat treated, dyed, or chemically altered? The heat usually acts on the iron in a stone. rule of thumb color changes: yellow to orange orange to red red to deeper red or brown lavender to purple clear to white gray due to salt to jet black Many rocks do the unexpected. Depends on metallic salts and other compounds. Yes, classic heated colors. Madagascar is rich in red clay and iron. Have you experimented with reduction heating instead of oxidation heating? May get some new effects.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:44:50 GMT -5
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Post by Garage Rocker on Feb 21, 2017 10:45:59 GMT -5
Uh-oh, I see a whole new thread coming...
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Post by wigglinrocks on Feb 21, 2017 10:51:47 GMT -5
Those Florida corals turned crazy cool colors
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Post by captbob on Feb 21, 2017 10:55:01 GMT -5
All those unopened boxes of Rio Grande treasures and you are playing with coral? silly Taking a break from the Rios or just something to keep you busy as the Rios tumble?
Wonder how such heat treating would effect Tampa Bay corals. Does the heat treatment make the coral more fragile, tougher or no difference?
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Post by vegasjames on Feb 21, 2017 10:56:05 GMT -5
The way you are heating the stones is using oxidation to alter the colors. For example changing limonite, which is usually light brown to brown to a red. Reduction heating removes oxygen during heating. For example some rubies are heat treated using oxidation while others need to be heat treated by reduction. A simple way to do this is to put the stones in the sand mixed with sugar. Then put a loose lid on the container to allow steam escape as the sugar burns. The burning of the sugar during the heating process will use of the oxygen present producing a reducing atmosphere instead of an oxidizing atmosphere.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 10:56:42 GMT -5
Uh-oh, I see a whole new thread coming... Am saturated with mega combinations of heat treating as is. The further south you go the more salt content. Oddly, the south most zone has richer iron colors that heat to rich colors. then coral is exposed by the ocean around Tampa. It turns pink blue and black and others. Now James is going to add fuel to fire in reduction heating.
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Post by vegasjames on Feb 21, 2017 11:00:37 GMT -5
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Post by vegasjames on Feb 21, 2017 11:05:35 GMT -5
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,161
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Post by jamesp on Feb 21, 2017 11:12:29 GMT -5
Those Florida corals turned crazy cool colors Yes wigglin, the deep south coral is the most unpredictable. We don't have the most colorful rocks so the heat treating helps.
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