Cleavage- in geolohy, the tendency of a mineral to split
along specific planes of weakness to format smooth flat
Surface.
Fracture- the manner in which a mineral breaks along
either curved or irregular
Quartz does not have cleavage. However, it does have fracture. Its fracture is conchoidal.
Cleavage is when you can break the rock into square like pieces and Fracture is when you break a rock into uneven different shaped pieces.
it has no cleavage
it has no cleavage
cleavage
Fracture
Hematite has a characteristic fracture, meaning it breaks irregularly with rough or jagged edges and no smooth cleavage planes.
Serpentine is a general name for 5 different minerals. These are antigorite, clinochrysotile, lizardite, orthochrysotile, and parachrysotile. Antigorite and lizardite have cleavage in one direction. The others have fracture.
the cleavage is Poor
Cleavage is the tendency of a mineral to break along planes of weak atomic bonding, resulting in smooth, flat surfaces, while fracture is the tendency of a mineral to break with rough, irregular surfaces. Cleavage results in smooth, reflective surfaces that reflect light, whereas fracture surfaces are dull and do not reflect light. Cleavage is a property that is characteristic of certain minerals and can be used for mineral identification, while fracture can vary depending on the specific conditions of the break and is less consistent across different minerals.
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.