Hematite has a characteristic fracture, meaning it breaks irregularly with rough or jagged edges and no smooth cleavage planes.
Galena has a distinct cleavage, typically showing cubic cleavage planes.
Rutile does not have cleavage. Instead, it typically displays a conchoidal fracture, which is a smooth, curved break.
Azurite does not have cleavage, but it exhibits a conchoidal fracture, meaning it breaks into smooth, curved surfaces similar to glass.
Kaolinite has a perfect cleavage in one direction. This means that it breaks along flat, even surfaces.
Zinc is a metal that exhibits a fracture rather than cleavage. Fracture refers to the way a mineral breaks when it is not along cleavage planes, while cleavage refers to the tendency of a mineral to break along flat planes.
Quartz does not have cleavage. However, it does have fracture. Its fracture is conchoidal.
cleavage
it has no cleavage
it has no cleavage
Fracture
Hematite has a characteristic fracture, meaning it breaks irregularly with rough or jagged edges and no smooth cleavage planes.
the cleavage is Poor
Sapphire has a mixture of both cleavage and fracture characteristics. It has poor cleavage in one direction and conchoidal fracture, which means it breaks with smooth, curved surfaces similar to glass.
It has both: uneven fracture, and perfect cleavage in three directions.
Cleavage
It has both cleavage and fracture.