kensclark14 Posted November 12, 2010 Share Posted November 12, 2010 My grandpa just gave me a rock. He said it had gold in the middle of it but I don't know. The main rock looks kinda redish and there are veins of blueish greenish mineral in it. What is it? Here is a picture.By kensclark13 at 2010-11-11The pic is also attached. Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted November 12, 2010 Share Posted November 12, 2010 It is agate. The red phase is jasper. A very comon form of microcrystalline silica. Quote Link to comment Share on other sites More sharing options...
kensclark14 Posted November 12, 2010 Author Share Posted November 12, 2010 It is agate. The red phase is jasper. A very comon form of microcrystalline silica.Do you think it has gold in it? He said he had it inspected or however you say it. Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted November 12, 2010 Share Posted November 12, 2010 No. Microcrystalline silicas are extrusive/volcanic and rarely have gold. It could happen but it is rare. But anything is possible. If it was tuly "tested" for gold that would mean that is was assayed? That involves crushing, splitting and refining. An gc/ms analysis is non destructive but would only tell you what the very surface is composed of. If that rock has gold in it you can inspect it with a 30X loupe and see it. Otherwise crush the thing and pan it and see.One thing is for certain the rock is not big or rich enough to be very valuable, even if it was 50% gold. So beat it to dust and pan the stuff. If there is gold you will see it. Quote Link to comment Share on other sites More sharing options...
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