The Rock Professor has provided you with a mineral
information card. Print on stock paper, and cut out
to enhance your rock and mineral products.
To print: with your cursor, highlight the entire card
below, right click and select print, then click on
"selection" and print.
THE ROCK PROFESSOR
Chemistry: SiO2 ♦ Variety: Quartz ♦ transparent to translucent ♦ Luster: vitreous ♦ Crystal system: trigonal ♦ Moh's hardness: 7 ♦ Color: Various shades of purple ♦ Localities: may be found throughout the world, with notable western hemisphere occurrences in Brazil, Uruguay, Ontario, Vera Cruz, Mexico, Guerrero, Mexico, Maine, North Carolina, Pennsylvania, Colorado.