Olenite Mineral Data

Olenite Mineral Data +

General Olenite Information

Chemical Formula:

NaAl3Al6(BO3)3(Si6O18)(O,OH)4

Composition:

Molecular Weight = 963.76 gm

Sodium 2.39 % Na 3.22 % Na₂O

Aluminum 25.20 % Al 47.61 % Al₂O₃

Silicon 17.49 % Si 37.41 % SiO₂

Boron 3.36 % B 10.84 % B₂O₃

Hydrogen 0.10 % H 0.93 % H₂O

Oxygen 51.46 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaAl₉(BO₃)₃Si₆O₂₁(OH)

Environment:

Aluminum-rich tourmaline. Forms a series with elbaite.

IMA Status:

Approved IMA 1986 (Dana # Changed)

Locality:

Decembrist pegmatite field, Olenik River Basin, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 89900

Olenite - (61.3.1.7)

PDF 39-336

Tourmaline

Olenite Image

Images:

Olenite

Comments: Colorless, boron-rich crystal of Olenite in quartz.
Location: Koralpe, Styria, Austria. Scale: Crystal size 3 cm.
© Andreas Ertl / Institut f?r Mineralogie und Kristallographie

Olenite Crystallography

Axial Ratios:

a:c = 1:0.44842

Cell Dimensions:

a = 15.802, c = 7.086, Z = 3; V = 1,532.34 Den(Calc)= 3.13

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.551(1), 3.43(0.8), 3.95(0.7),

Crystal Structure:

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Ertl A , Hughes J M , Prowatke S , Rossman G R , London D , Fritz E A , American Mineralogist , 88 (2003) p.1369-1376, Mn-rich tourmaline from Austria: structure, chemistry, optical spectra, and, relations to synthetic solid solutions, Sample BT from Eibenstein an der Thaya, Lower Austria

View Additional jPOWD Structure files for Olenite
[1] [10] [11] [12] [13] [14] [15] [2] [3] [4] [5] [6] [7] [8] [9]

Physical Properties of Olenite

Cleavage:

None

Color:

Light pink.

Density:

3.01

Diaphaniety:

Translucent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

7 - Quartz

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Olenite

Dichroism (e):

pinkish yellow.

Dichroism (w):

bright pink.

Gladstone-Dale:

CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2059,KPDmeas= 0.2141,KC= 0.2089

Optical Data:

Uniaxial (-), e=1.635, w=1.654, bire=0.0190.

Calculated Properties of Olenite

Electron Density:

r_electron=3.09 gm/cc
note: r_Olenite=3.13 gm/cc.

Fermion Index

Fermion Index = 0.0151
Boson Index = 0.9849

Photoelectric:

PE_Olenite= 1.49 barns/electron
U=PE_Olenite x r_electron= 4.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Olenite is Not Radioactive

Olenite Classification

Dana Class:

61.3d.1.7 (61)Cyclosilicate Six-Membered Rings

(61.3d)with borate groups (Lithian Tourmaline Subgroup)

(61.3d.1)Dana Group

61.3d.1.7 Olenite ! NaAl3Al6(BO3)3(Si6O18)(O,OH)4 R 3m 3m

61.3d.1.8 Elbaite! Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 R 3m 3m

Strunz Class:

VIII/E.19-60 VIII - Silicates

VIII/E - Cyklosilicates, six rings [Si6O18]12-

VIII/E.19 - Tourmaline group

VIII/E.19-05 Rossmanite! []LiAl2Al6(Si6O18)(BO3)3(OH)4 R 3m 3m

VIII/E.19-10 Elbaite Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-15 Magnesiofoitite! [](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 R 3m 3m

VIII/E.19-20 Dravite NaMg3Al6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-30 Chromdravite! NaMg3(Cr,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-35 Vanadiumdravite! NaMg3V6(Si6O18)(BO3)3(OH)4 R 3m 3m

VIII/E.19-50 Schorl NaFe3Al6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-55 Foitite! []Na<0.5(Fe,Al)3Al6Si6O18(BO3)3(OH)4 R 3m 3m

VIII/E.19-60 Olenite NaAl3Al6(BO3)3(Si6O18)(O,OH)4 R 3m 3m

VIII/E.19-70 Buergerite! NaFe3Al6(BO3)3Si6O21F R 3m 3m

VIII/E.19-75 Povondraite! (Na,K)(Fe,Fe)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-80 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m

VIII/E.19-90 Uvite (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m

VIII/E.19-100 Feruvite! (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m

Other Olenite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.73,p441,1988) OPTIC PROP.(Am.Min.,Vol.73,p441,1988)

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Olenite

NaAl3Al6(BO3)3(Si6O18)(O,OH)4
Dana No: 61.3d.1.7 Strunz No: VIII/E.19-60
Locality:

Notes: