It has both. It's cleavage is perfect, and it's fracture is sub-conchoidal.
Cleavage of galena is the tendency of the mineral to break along planes of weakness, resulting in smooth, flat surfaces. Galena exhibits perfect cleavage in three directions at right angles to each other, producing cubic or octahedral shapes. This property is a result of the crystal structure of galena.
Hematite has a characteristic fracture, meaning it breaks irregularly with rough or jagged edges and no smooth cleavage planes.
yes rutile has cleavage-distinct (100) yes rutile has fracture
Azurite does not have cleavage, but it exhibits a conchoidal fracture, meaning it breaks into smooth, curved surfaces similar to glass.
No, it has no preferred fracture or cleavage.
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 exhibits perfect cleavage, which means it can break along specific planes of weakness in its crystal structure, resulting in smooth, flat surfaces. This property is due to its cubic crystal system and the strong ionic bonds between lead and sulfur atoms. When fractured, galena typically displays a conchoidal fracture, but its cleavage is the most characteristic feature, making it easy to identify. As a primary ore of lead, galena's cleavage plays a critical role in its extraction and processing.
Cleavage of galena is the tendency of the mineral to break along planes of weakness, resulting in smooth, flat surfaces. Galena exhibits perfect cleavage in three directions at right angles to each other, producing cubic or octahedral shapes. This property is a result of the crystal structure of galena.
Quartz does not have cleavage. However, it does have fracture. Its fracture is conchoidal.
galena
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.
the cleavage is Poor