What is the hardness of dolomite? Can anyone offer some physical properties of dolomite? And what is main use of dolomite? Why hardness is so important to the crushing machine?

The Mohs hardness of dolomite is 3.5 – 4.
Of course, hardness is so important to the crushing machines, and it directly affects the design of crushing solution. If the Mohs hardness of stone is small, there will be less crushing machines and equipment needed. Typically, rocks whose have high hardness will need more crushing machines.

Here are the main physical properties of
dolomite:

Color: colorless, white, pink, green, gray, brown, black

Streak: white

Luster:  vitreous,
pearly

Diaphaneity:  transparent to translucent

Cleavage : perfect, rhombohedral, three directions

Mohs Hardness:  3.5 - 4

Specific Gravity:  2.8 - 2.9

Distinguishing Characteristics  : rhombohedral cleavage, powdered form effervesces weakly in dilute
HCl, curved crystal faces and frequent twinning

Crystal System:   hexagonal

                    Crushing machines for Processing Dolomite