it has no cleavage but it does have fracture
Magnetite has fracture not cleavage. ChaCha on!
Quartz has a conchoidal fracture. It does not have a cleavage plane.
An opal has no cleavage. It does, however, have a fracture. It's fracture is Conchodial to uneven.
the cleavage is Poor
It has both. It's cleavage is perfect, and it's fracture is sub-conchoidal.
Galena's fracture is subconchoidal, and its cleavage is cubic. See http://www.minerals.net/mineral/sulfides/galena/galena.htm for a complete chart about galena's properties.
Galena's cleavage is cubic.
Galena's cleavage is cubic.
Galena's cleavage is cubic.
Cleavage is smooth; Fracture is rough. Cleavage splits along flat surfaces; Fracture splits along jagged surfaces. Cleavage is Cleavage; Fracture is Fracture
No, it has no preferred fracture or cleavage.
Quartz does not have cleavage. However, it does have fracture. Its fracture is conchoidal.
it has no cleavage but it does have fracture
Magnetite has fracture not cleavage. ChaCha on!
galena
Quartz has a conchoidal fracture. It does not have a cleavage plane.