Luster - Nonmetallic
Hardness - 2.5-5.5
Streak=White or Colorless
3 Directions of Cleavage - Not right angles

Dolomite
Ca,Mg(CO3)2

White or colorless Streak

3 Directions of Cleavage at 60° or 120°

Usually pink or white. Occurs as small, rhombic, poorly-formed. Reacts with HCl when powdered. H=3.5-4.0

Your Mineral is Dolomite!

 

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