Spodumene Mineral Data

General Spodumene Information

Chemical Formula:

LiAlSi2O6

Composition:

Molecular Weight = 186.09 gm

Lithium 3.73 % Li 8.03 % Li₂O

Aluminum 14.50 % Al 27.40 % Al₂O₃

Silicon 30.18 % Si 64.58 % SiO₂

Oxygen 51.59 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

LiAl(Si₂O₆)

IMA Status:

Valid Species (Pre-IMA) 1800

Locality:

Link to MinDat.org Location Data.

Name Origin:

Spodumene is from the Greek, spodoumenos, "burnt to ash," alluding to the ashy color of early specimens. Kunzite is named after the American gem expert, G. F. Kunz (1856-1932). Hi ddenite is named after the American mi

Name Pronunciation:

Spodumene + Pronunciation

Synonym:

Hiddenite - emerald green

ICSD 30521

Kunzite - pink, violet, purple

PDF 33-786

Triphane - colorless, yellow

Spodumene Image

Images:

Spodumene

Comments: Stacked crystals of Spodumene (Var. Kunzite).
Location: Galileia, Minas Gerais, Brazil. Scale: Crystal size 7 cm.
© Dave Barthelmy

Spodumene Crystallography

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

By Intensity(I/I_o): 2.921(1), 2.793(0.9), 4.205(0.75),

Forms:

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Drag1 - Manipulate Crystal
Drag2 - Resize
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Forms: ( 1 0 0) ( 1 0 0) ( 1 1 0) ( 0 1 1)

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Physical Properties of Spodumene

Color:

Grayish white, Pink, Violet, Emerald green, Yellow.

Optical Properties of Spodumene

Gladstone-Dale:

CI meas= 0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.209,KPDmeas= 0.2103,KC= 0.2157
Ncalc = 1.67 - 1.69

Calculated Properties of Spodumene

Electron Density:

Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Spodumene =3.15 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Spodumene= 1.61 barns/electron
U=PE_Spodumene x rElectron Density= 5.02 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Spodumene is Not Radioactive

Spodumene Classification

Dana Class:

65.01.04.01 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.01)with chains P=2

(65.01.04)Li pyroxenes

65.01.04.01 Spodumene LiAlSi2O6 C 2/c 2/m

Strunz Class:

09.DA.30 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DA -Inosilicates with 2-periodic single chains, Si2O6; pyroxene family

09.DA.30 Spodumene LiAlSi2O6 C 2/c 2/m

Other Spodumene Information

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Print or Cut-and-Paste your Spodumene Specimen Label here :

Spodumene

LiAlSi2O6
Dana No: 65.01.04.01 Strunz No: 09.DA.30
Locality:

Notes:

Spodumene">YAHOO]

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