Iranite Mineral Data
General Iranite Information
Chemical Formula:
Pb10Cu(CrO4)6(SiO4)2(F,OH)2
Composition:
Molecular Weight = 3,052.68 gm
Chromium 10.22 % Cr 19.65 % CrO3
Copper 2.08 % Cu 2.34 % Cu2 O
Silicon 1.84 % Si 3.94 % SiO2
Hydrogen 0.02 % H 0.15 % H2 O
Lead 67.87 % Pb 73.12 % PbO
Oxygen 17.03 % O
Fluorine 0.93 % F 0.93 % F
- %
F -0.39 % -O=F2
______ ______
100.00 % 99.74 % = TOTAL OXIDE
Empirical Formula:
Pb10 Cu(CrO4 )6 (SiO4 )2 F1.5 (OH)0.5
IMA Status:
Approved IMA 1963
Locality:
Sebarz mine, NE of Anarak, Iran. Link to MinDat.org Location Data.
Name Origin:
Name for the country.
Name Pronunciation:
Iranite
Iranite Image
Images:
Iranite
Comments: Crystals of iranite to 3mm on brecciated, siliceous matrix.
Location: Sebarz mine, Anarak, Iran.
Scale: 3.7 x 2.5 cm.
© John Veevaert
Iranite Crystallography
Axial Ratios:
a:b:c =1.0503:1:1.0366
Cell Dimensions:
a = 10.02, b = 9.54, c = 9.89, Z = 1; alpha = 104.5°, beta = 66°, gamma = 108.5° V = 792.94 Den(Calc)= 6.39
Crystal System:
Triclinic - Pedial H-M Symbol (1) Space Group: P1
X Ray Diffraction:
By Intensity(I/Io ): 3.28(1), 3.49(1), 3.6(1),
Physical Properties of Iranite
Color:
Brownish yellow, Yellow, Honey brown.
Density:
5.8
Hardness:
3 - Calcite
Luster:
Vitreous (Glassy)
Streak:
yellow
Optical Properties of Iranite
Gladstone-Dale:
CI meas = -0.31 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = -0.216 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.216,KPDmeas = 0.2328,KC = 0.1777 Ncalc = 2.03 - 2.11
Optical Data:
Biaxial (?), a=2.25, g=2.4-2.5, bire=0.1500-0.2500
Calculated Properties of Iranite
Electron Density:
Bulk Density (Electron Density)=5.30 gm/cc note: Specific Gravity of Iranite =6.25 gm/cc.
Fermion Index:
Fermion Index = 0.16 Boson Index = 0.84
Photoelectric:
PEIranite =1,231.83 barns/electronU=PEIranite x r Electron Density=6,532.05 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Iranite is Not Radioactive
Iranite Classification
Dana Class:
36.01.01.01 (36) Compound Chromates
(36.01) with miscellaneous formulae
(36.01.01) Dana Group
36.01.01.01 Iranite Pb10Cu(CrO4)6(SiO4)2(F,OH)2 P1 1
36.01.01.02 Hemihedrite Pb10Zn(CrO4)6(SiO4)2F2 P1 1
Strunz Class:
07.FC.15 07 - SULFATES (SELENATES, TELLURATES)
07.F - Chromates
07.FC -With PO4, AsO4, SiO4
07.FC.15 Hemihedrite Pb10Zn(CrO4)6(SiO4)2F2 P1 1
07.FC.15 Iranite Pb10Cu(CrO4)6(SiO4)2(F,OH)2 P1 1
Other Iranite Information
References:
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
See Also:
Links to other databases for Iranite :
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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Iranite
Pb10Cu(CrO4)6(SiO4)2(F,OH)2
Dana No: 36.01.01.01 Strunz No: 07.FC.15
Locality:
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