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.
Some mineral s have three planes of cleavage : If the three cleavages intersect at. 90Â° the mineral is said to havecubic cleavage (Figure s 8, 11A): If none of the. cleavage planes intersect at right angles the shape is a squashed cube known as a. rhombohedron (called rhombohedral cleavage -- Figures 8, 11B).