the contractile ring
Sulfur's cleavage is imperfect.
cleavage....
Cleavage and fracture describe how a mineral breaks. Cleavage shows the tendency of a mineral to break along specific planes due to its crystal structure, while fracture refers to irregular breakage patterns. Cleavage can create smooth surfaces, aiding in mineral identification and classification, while fractures can vary in appearance, from conchoidal (shell-like) to uneven.
it has no cleavage
imperfect cleavage
it has no cleavage
What cleavage does pyrite have
cleavage
No it has cleavage and it's cleavage is "absent".
Cleavage is the creation of new cells with no cell growth. The cytoplasm gets split up within the same cell, so you don't actually create an entirely new cell, but a division on the larger cell. Mitosis results from cell growth and creates entirely new cells.
Chalcopyrite does not have cleavage. It typically exhibits a conchoidal fracture instead of cleavage planes.