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Hematite
If the sun unevenly heats the minerals in a rock causing the rock to break, it is an example of physical weathering.
calcium
Cleavage
diamonds
cleavege of the mineral
Cleavages
cleavage
The difference between a mineral that has cleavage and one that has fracture is that cleavage is the tendency of some minerals to brake along flat surfaces and fracture is the tendency of some minerals to brake unevenly along curved or irregular surfaces.
This is known as conchoidal fracture.
Fracture is when minerals are broke with an irregular. The pattern is not right.
Cleavage is the tendency of a mineral to break along smooth planes parallel to zones of weak bonding.