Selenite crystals are a kind of gypsum. Fluorite from a mine near White Sands, New Mexico. Fluorite is a source of fluorine and fluoride with is used to help prevent tooth decay. Azurite from a copper mine at Bisbee, Arizona. Azurite contains copper.
Copper is used for pennies and for electrical wires.
Turquoise from Arizona. Turquoise contains copper and aluminum. It is usually found near copper mines, but not always. Turquoise is mostly used for jewelry. Galena from a mine near where the first atomic bomb was tested.