Tourmaline and Apatite

Original Description: *Incomplete. Tourmaline (Na(Mg, Fe)3Al6(BO3)3(Si,O18)(OH,F)4) can be black (Schorl), blue (Indicolite), pink or red (Rubellite), brown (Dravite), green, multicoloured or white (rare). Lustre is vitreous and streak is white. Hardness is 7 to 7 1/2. Tourmaline usually occurs as short to long prismatic crystals that have rounded triangular cross-section with striations on the length of the crosswise. Tourmaline can also be radiating, columnar or compact. Apatite (Ca5(PO4)3(F,Cl,OH) can be green, brown, red, yellow, violet, pink, white or colourless. Lustre is greasy or vitreous and streak is white. Hardness is 5 and cleavage is poor in one direction crosswise. Apatite usually occurs as short to long prismatic crystals but can also be coarse granular, compact, stalactitic, earthy or oolitic.