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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
trigonal
Crystal Class
ditrigonal pyramidal
Space Group
R3m
a
15.5996—15.9466 (15.8185)
b
15.5996—15.9466 (15.8185)
c
7.0224—7.1822 (7.0961)
alpha
90
beta
90
gamma
120
volume
1479.94—1577.18 (1537.9)
Based on
33
measurements
Chemical context
Stoichiometric formulas
Olenite
mindat.org
March 13, 2023
NaAl
3
Al
6
(Si
6
O
18
)(BO
3
)
3
O
3
(OH)
IMA
March 13, 2023
NaAl
3
Al
6
(Si
6
O
18
)(BO
3
)
3
O
3
(OH)
mineralogy.rocks
Aug. 30, 2022
NaAl
3
Al
6
(Si
6
O
18
)(BO
3
)
3
(O
3
)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
Color
Color entities, recognized using a custom trained NER model
light pink
pale bluish
pale greenish
colourless
Color note
Original color note from the source
Light pink, blue, pale bluish, pale greenish, colourless
Streak
Streak entities, recognized using a custom trained NER model
Streak note
Original streak note from the source
White
Lustre
Vitreous
Fracture
Conchoidal
Transparency
Transparent
Luminescence
Nonfluorescent.
Hardness
7
Calculated density
3.12
Olenite | mineralogy.rocks