Foitite
Tourmaline mineral / From Wikipedia, the free encyclopedia
Foitite is a mineral in the tourmaline group,[2] it is a vacancy-dominant member of the group.[3] Foitite is in the 'vacancy' group, due to the absence of atoms in the X site.[2]
You can help expand this article with text translated from the corresponding article in German. Click [show] for important translation instructions.
|
Quick Facts General, Category ...
Foitite | |
---|---|
General | |
Category | Mineral |
IMA symbol | Foi[1] |
Crystal system | Trigonal |
Identification | |
Mohs scale hardness | 7 |
Close
According to the Czech Geological Society, foitite is rare.[4] However foitite is quite common among low-temperature tourmalines[5] and it might be more common than previously thought.[6]
The color of the mineral is dark indigo with purple tints to bluish-black.[3]