1 "Fișier:Gold-quartz-sulfide_hydrothermal_vein_(O'Dea_Vein_or_Irishman_Vein,_Late_Cretaceous;_Grant_Mine,_Fairbanks_Mining_District,_Alaska,_USA)_4_(17153075755).jpg".
publication date: 15 April 2015 operator: Flickr described at URL: https://www.flickr.com/photos/jsjgeology/17153075755/ determination method: saquina chaúque...
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