Apatite

$Ca_5(PO_4)_3 (F,OH,Cl)$

  Family phosphates
  Crystal system hexagonal
  Color green, blue, violet, purple, colorless, yellow, pink, white, brown
  Streak color white
  Cleavage 1 poor cleavage
  Hardness 5
  Density 3,2

Explanations: → Here List of minerals: → Here