spicemen
off to a rocking start
Member since June 2017
Posts: 13 
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Post by spicemen on Jun 28, 2017 20:54:11 GMT -5
There was a state sale around me and the guy was a boysout master. They had ajar of rocks for $2.00 One of the bigger rocks has gold flakes in it. What are the flakes ? What type of testing is needed? Any help is appreciated. Thank you  |
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Tommy
Administrator 
Member since January 2013
Posts: 12,989
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Post by Tommy on Jun 28, 2017 21:38:19 GMT -5
There was a state sale around me and the guy was a boysout master. They had ajar of rocks for $2.00 One of the bigger rocks has gold flakes in it. What are the flakes ? What type of testing is needed? Any help is appreciated. Thank you Paint overspray? Don't laugh - eliminate the obvious is my motto  Welcome to the board |
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Post by spiceman on Jun 28, 2017 21:44:05 GMT -5
That is a possibility. Thinking outside the box.
That will be my first test. :)
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Post by spiceman on Jun 28, 2017 21:48:48 GMT -5
Some other rocks came in the same box and that is the only one with gold flakes.
I will still try to remove the flakes with a solvent.
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Sabre52
Cave Dweller 
Me and my gal, Rosie
Member since August 2005
Posts: 20,497
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Post by Sabre52 on Jun 28, 2017 22:14:49 GMT -5
If the gold part is metallic instead of just yellow flecks, it could be apache gold, a stone composed of golden metallic chalcopyrite in black shist....Mel
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zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
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Post by zarguy on Jun 28, 2017 23:02:36 GMT -5
Some rocks I've collected have tar spray on them because they were near a road. This looks like yellow line paint. Let's see what the solvent does.
Lynn
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jun 29, 2017 10:11:59 GMT -5
I agree with Zarguy. it really looks like yellow road paint to me. Have you tried to get some of it off?
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Post by rockpickerforever on Jun 29, 2017 10:32:01 GMT -5
We bought a rock at an estate sale a few years ago. It had speckles of house paint on it, from sitting next to the house while it was painted. Not once, but twice - two colors! Dale spiceman , spiceman123 , spiceman848 , spicemen - Why do you have four accounts? Just curious..... |
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Tommy
Administrator
Member since January 2013
Posts: 12,989
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Post by Tommy on Jun 29, 2017 18:44:38 GMT -5
We bought a rock at an estate sale a few years ago. It had speckles of house paint on it, from sitting next to the house while it was painted. Not once, but twice - two colors! Dale spiceman , spiceman123 , spiceman848 , spicemen - Why do you have four accounts? Just curious..... Not to speak for Dale but I'm guessing it has something to do with trying to get Tapatalk working. |
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Post by johnjsgems on Jun 29, 2017 21:23:52 GMT -5
If it is mineral look with a magnifier. I was told gold will be rounded and pyrite will be angular. If metallic the rock should have "heft" too. Heavier than it looks like it should be.
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Post by spiceman on Jun 29, 2017 21:35:23 GMT -5
I was showing my dad and said the rock feels heavier than it looks.
Pyrite is megnetic?
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spiritstone
Cave Dweller
Member since August 2014
Posts: 2,061
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Post by spiritstone on Jun 29, 2017 21:43:44 GMT -5
Can you chip a piece off and show us if the spots run through the stone. That would help immensely.
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Post by melhill1659 on Jun 30, 2017 11:58:50 GMT -5
Hey Dale if it's powdery it could be a form of sulfur as well.
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Post by orrum on Jun 30, 2017 19:45:32 GMT -5
Dale gold flakes are golden in the shade. Pyrite is hold in the sun. Gold flakes will deform with a pocket knife point and pyrite flakes off.
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metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
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Post by metalsmith on Jul 1, 2017 7:44:14 GMT -5
If the gold part is metallic instead of just yellow flecks, it could be apache gold, a stone composed of golden metallic chalcopyrite in black shist....Mel in black soapstone to my understanding, but the point remains... The sample looks yellow spotted to me, but on a screen who knows - does it look metallic? Could you also try to scratch a spot off? If it is bright yellow, then the obvious candidates would be sulphur and alternatively yellow arises in arsenic compounds (see bumblebee jasper, containing both) so this could be toxic and maybe you should take proper precautions and steer away from aerial-dispersing the powder from cutting it until you have some confidence in what you know. |
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Jul 1, 2017 9:17:59 GMT -5
Dale
Push a push pin into a flake. Observe how the flake reacts to the pin. Report here
I'm thinking gold!
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Post by spiceman on Jul 1, 2017 13:02:21 GMT -5
There was a state sale around me and the guy was a boysout master. They had ajar of rocks for $2.00 One of the bigger rocks has gold flakes in it. What are the flakes ? What type of testing is needed? Any help is appreciated. Thank you First, After the first pics of the rock, I put it away so good I could not find it. HA I have it now and did some paint testing. First, I tried to remove it with Xylene and a Qtip. Didn't remove the dots. Let it soak in, no change in results. Second, I used a metal scribe, if it is gold it would scrape off anyway. But I didn't see any dip in the rock where the spot was. Third I broke a small corner off a still see some dots. I was going to use my tile saw and cut a small piece off and see if I can see it better. Also, if I display it A cut edge looks better. No pics because my camera doesn't focus that close. If nothing else, the rock looks cool. |
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Post by coloradocliff on Jul 1, 2017 13:41:08 GMT -5
There was a state sale around me and the guy was a boysout master. They had ajar of rocks for $2.00 One of the bigger rocks has gold flakes in it. What are the flakes ? What type of testing is needed? Any help is appreciated. Thank you First, After the first pics of the rock, I put it away so good I could not find it. HA I have it now and did some paint testing. First, I tried to remove it with Xylene and a Qtip. Didn't remove the dots. Let it soak in, no change in results. Second, I used a metal scribe, if it is gold it would scrape off anyway. But I didn't see any dip in the rock where the spot was. Third I broke a small corner off a still see some dots. I was going to use my tile saw and cut a small piece off and see if I can see it better. Also, if I display it A cut edge looks better. No pics because my camera doesn't focus that close. If nothing else, the rock looks cool. Yep Dale, Looks cool. The pin didn't leave an indentation like it was soft gold? That color is just so bright for gold. |
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