formariz 12,041 #1 Posted October 18, 2021 In my in-laws home here there is this marble top that has always puzzled me. It has a vein that has these metal particles imbedded in it. They are hard to photo showing correctly how they are. They are golden in color, I always though they may actually be gold. Hopefully our resident expert @bc.gold can put this mystery to rest. Share this post Link to post Share on other sites
953 nut 59,917 #2 Posted October 18, 2021 When limestone is converted to marble any impurities in the limestone become the veins. If gold is present in your area there is no reason it couldn't become a part of the marble. I don't know how you could test it in a nondestructive manner. Share this post Link to post Share on other sites
lynnmor 7,814 #3 Posted October 18, 2021 My guess is iron pyrite (fools gold). Share this post Link to post Share on other sites
bc.gold 3,406 #4 Posted October 18, 2021 1 hour ago, lynnmor said: My guess is iron pyrite (fools gold). Stranger things have happened but with that many visible inclusions I'm sure the people mining that marble would have had an assay done, I'm with lynnmor what your seeing if fools gold. Share this post Link to post Share on other sites
formariz 12,041 #5 Posted October 18, 2021 Thank you for the enlightenment. I have always been curious about it. It always catches everyone’s eye since it is pretty prominent. Share this post Link to post Share on other sites
