Tremolite

$Ca_2Mg_5 Si_8O_{22}(OH)_2$

  Family inosilicates
  Crystal system monoclinic
  Color green, brown dark to brown-yellow, grey, white, colorless
  Streak color white
  Cleavage 2 perfect cleavages,at 56o
  Hardness 3,1 to 3,3
  Density 3,0 to 3,3

Explanations: → Here List of minerals: → Here