Torumaline is a complex silicate. Turmalin is in more colors available than any other mineral. Tourmaline grows in column crystals with strips around it. Many tourmalines has got many colors. Tourmaline can charged electrically through mechanically effect. So it can tighten dust and chad. Tourmalines are a whole mineral group. Some Tourmalines have got the quality of precious stones. Tourmaline is resitant towards acids. In Europe Tourmaline is known since the 18th century. The first Tourmalines came from Sri Lanka. Until today there are Torumalines. Tourmalines can also be found in
Madagascar and Brazil.
Data about the Tourmaline
Chemical formula
NaFe3Al6[(OH)4|(BO3)3|Si6O18]
Mineral class
silicates
Crystal system
trigonal
Hardness
7
Density
3 g/cm3
Color
green, black, blue, brown
Line color
white
Gloss
glass gloss
Break
fragment
Fissileness
none
Author and Webmaster: Lukas Czarnecki
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