Arkansas Democrat Gazette-I am very upset that I buy newspapers every Sunday. I am very upset that I buy newspapers every Sunday and pay $2.00 and always get coupons and this week the week before Christmas there are none!
Definitions. Cleavage-The tendency of a mineral to break along flat planar surfaces as determined by the structure of its crystal lattice. These two-dimensional surfaces are known as cleavage planes and are caused by the alignment of weaker bonds between atoms in the crystal lattice.leavage and fracture describe different ways in which a mineral can break. Cleavage-The tendency of a mineral to break along flat planar surfaces as determined by the structure of its crystal lattice.
Chlorite: Usually light to medium green in thin section and pleochroic,expressed in shades of colorless, pale green, yellowish green, green, orbrownish green. Grains are darker when the trace of cleavage is parallel with thevibration direction of the lower polar. Perfect cleavage on {001} controlsfragment orientation.