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
Species: Feldspar ♦ Variety: Microcline ♦ Chemistry: Potassium Aluminum Silicate ♦ Moh's hardness: 6-6.5 ♦ Crystal Form: Triclinic, prismatic ♦ Polish Luster: Vitreous to greasy ♦ Fracture: Uneven to splintery ♦ Color: Green, blue-green ♦ Fluorescence: Weak, olive-green ♦ Locality: Colorado, Brazil, India, Kenya, Madagascar, Nambia, Russia and Zimbabwe