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"
THE ROCK PROFESSOR
Chemistry: hydrous calcium sulfate ♦ Variety of: gypsum ♦ transparent ♦
Luster: vitreous to pearly ♦ Crystal system: monoclinic prismatic ♦
Moh's hardness: 2 ♦ Color: Colorless ♦ Localities: Extensive deposits worldwide.