Olenite

A very Al-rich member of the Tourmaline Group. Forms solid solutions with elbaite and schorl, also with alumino-oxy-rossmanite.

History

Activities related to discovery and approval of the group members

Structural context

Olenite
Crystal System trigonalCrystal Class ditrigonal pyramidalSpace Group R3m
a15.5996—15.9466 (15.8185)
b15.5996—15.9466 (15.8185)
c7.0224—7.1822 (7.0961)
alpha90
beta90
gamma120
volume1479.94—1577.18 (1537.9)

Based on 33 measurements

Chemical context

Stoichiometric formulas

Olenite
mindat.org
  • March 13, 2023NaAl3Al6(Si6O18)(BO3)3O3(OH)
IMA
  • March 13, 2023NaAl3Al6(Si6O18)(BO3)3O3(OH)
mineralogy.rocks
  • Aug. 30, 2022NaAl3Al6(Si6O18)(BO3)3(O3)OH

Elements recorded on EPMA

31
Al
31
B
31
Na
31
O
31
Si
29
H
18
Ca
18
Li
16
Fe
14
Mn
12
Ti
11
F
10
K
9
Mg
5
Be
1
Cl
1
Cu
1
Zn

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • light pink
  • pale bluish
  • pale greenish
  • colourless
Color noteOriginal color note from the source
Light pink, blue, pale bluish, pale greenish, colourless
StreakStreak entities, recognized using a custom trained NER model
    Streak noteOriginal streak note from the source
    White
    Lustre
    Vitreous
    Fracture
    Conchoidal
    Transparency
    Transparent
    Luminescence
    Nonfluorescent.
    Hardness
    7
    Calculated density
    3.12