Cyclosilicates
Pink Tourmaline
Pink Tourmaline
Chemical Formula : Al6B3Fe3H4NaO31Si6
Mohs Scale : 7 - 7.5
Crystal Structure : Trigonal (Rhombohedral)
Black Tourmaline ( Schorl )
Black Tourmaline ( Schorl )
Chemical Formula : Al6B3Fe3H4NaO31Si6
Mohs Scale : 7 - 7.5
Crystal Structure : Trigonal (Rhombohedral)
The most common species of tourmaline is schrol. 95 percent of tourmalines in nature are schorl.