Itoite Mineral Data

General Itoite Information

Chemical Formula:

Pb3[GeO2(OH)2](SO4)2

Composition:

Molecular Weight = 952.35 gm

Germanium 7.62 % Ge 10.98 % GeO₂

Hydrogen 0.21 % H 1.89 % H₂O

Lead 65.27 % Pb 70.31 % PbO

Sulfur 6.73 % S 16.81 % SO₃

Oxygen 20.16 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₃GeO₂(OH)₂(SO₄)₂

Environment:

Alteration product of anglesite.

IMA Status:

Approved IMA 1960

Locality:

Tsumeb, Namibia. Link to MinDat.org Location Data.

Name Origin:

Named for Tei-Ichi Ito (1898-1980), mineralogist and crystallographer, University of Tokyo, Japan.

Name Pronunciation:

Itoite

Synonym:

ICSD 43796

PDF 12-641

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Itoite Crystallography

Axial Ratios:

a:b:c =1.5743:1:1.2899

Cell Dimensions:

a = 8.47, b = 5.38, c = 6.94, Z = 1; V = 316.25 Den(Calc)= 5.00

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

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

By Intensity(I/I_o): 2.065(1), 3.003(0.9), 3.326(0.9),

Physical Properties of Itoite

Color:

Silky white.

Density:

6.67

Luster:

Silky

Streak:

white

Optical Properties of Itoite

Gladstone-Dale:

CI meas= 0.144 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.142 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.169,KPDmeas= 0.1267,KC= 0.148
Ncalc = 1.74 - 1.99

Optical Data:

Biaxial (?), b=1.84-1.85

Calculated Properties of Itoite

Electron Density:

Bulk Density (Electron Density)=4.28 gm/cc
note: Specific Gravity of Itoite =5.00 gm/cc.

Fermion Index:

Fermion Index = 0.15
Boson Index = 0.85

Photoelectric:

PE_Itoite=1,175.02 barns/electron
U=PE_Itoite x rElectron Density=5,033.94 barns/cc.

Radioactivity:

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

Itoite Classification

Dana Class:

30.02.06.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.02)where (A B)2 XO4 Zq

(30.02.06)Dana Group

30.02.06.01 Itoite Pb3[GeO2(OH)2](SO4)2 P nma 2/m 2/m 2/m

Strunz Class:

07.BD.50 07 - SULFATES (SELENATES, TELLURATES)

07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O

07.BD -With only large cations

07.BD.50 Itoite Pb3[GeO2(OH)2](SO4)2 P nma 2/m 2/m 2/m

Other Itoite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Itoite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Itoite

Pb3[GeO2(OH)2](SO4)2
Dana No: 30.02.06.01 Strunz No: 07.BD.50
Locality:

Notes: