A vein of turquoise, chrysocolla, quartz, iron and copper ore, photo by Ralph Philabaum, Philabaum Professional Painting, Tucson, AZ

This cupric/ferrous mineral matrix appears to hold turquoise, chrysocolla, quartz, iron and copper ore, embedded in quartzite. This formation was found near Colossal Cave in Arizona. This photo was taken by Ralph Philabaum, March 9, 2016.