Aragonite

$Cu_3(CO_3)_2(OH)_2$

  Family carbonates
  Crystal system orthorhombiic
  Color white, colorless, grey, pink, blue, brown
  Streak color white
  Cleavage 2 cleavages (1 good, 1 mediocre)
  Hardness 3,5 to 4
  Density 3

Explanations: → Here List of minerals: → Here