Sleekfox Posted August 8, 2020 Share Posted August 8, 2020 Rock is about 2 lbs, lots of gold but has this mystery blue mineral condensed into one spot. Found in granite formation in northern Colorado. 1 Quote Link to comment Share on other sites More sharing options...
d_day Posted August 8, 2020 Share Posted August 8, 2020 I’d guess it’s chalcopyrite. Strictly a guess on my part. 2 Quote Link to comment Share on other sites More sharing options...
Sleekfox Posted August 8, 2020 Author Share Posted August 8, 2020 Thank you! Does the gold look like pyrite or real gold? Quote Link to comment Share on other sites More sharing options...
Au Seeker Posted August 8, 2020 Share Posted August 8, 2020 2 hours ago, Sleekfox said: Thank you! Does the gold look like pyrite or real gold? It's very hard to tell pyrite from gold in a rock from a photo, use a sturdy sewing needle or knife point, etc. and poke the "gold" if it indents/bends it very well could be gold, if it crumbles/shatters/break into pieces it's a type of pyrite or similar mineral. Quote Link to comment Share on other sites More sharing options...
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