Copper, gold, silver, molybdenite, quartz, feldspars, micas, amphibole, magnetite, tourmaline, epidote, diamond, garnets, and many others.
gypsum
Because while the mineral is found worldwide, large red crystals of rhodochrosite are only found in a few places on Earth, the largest one known to have been found in the Sweet Home Mine near Alma,...
theres one in the mall in denver