Yedlinite Mineral Data
General Yedlinite Information
Chemical Formula:
Pb6CrCl6(O,OH)8
Composition:
Molecular Weight = 1,637.92 gm
Chromium 3.17 % Cr 5.13 % CrO2
Hydrogen 0.12 % H 1.10 % H2 O
Lead 75.90 % Pb 81.76 % PbO
Chlorine 12.99 % Cl 12.99 % Cl
- %
Cl -2.93 % -O=Cl2
Oxygen 7.81 % O
______ ______
100.00 % 98.05 % = TOTAL OXIDE
Empirical Formula:
Pb6 CrCl6 O6 (OH)2
IMA Status:
Approved IMA 1974
Locality:
Link to MinDat.org Location Data.
Name Origin:
Named of Leo Neal Yedlin (1908-1977), micromount mineral collector of New Haven, Connecticut, USA.
Name Pronunciation:
Yedlinite + Pronunciation
Synonym:
ICSD 6075
PDF 27-269
Yedlinite Image
Images:
Yedlinite Crystallography
Axial Ratios:
a:c = 1:0.76321
Cell Dimensions:
a = 12.868, c = 9.821, Z = 3; V = 1,408.34 Den(Calc)= 5.79
Crystal System:
Trigonal - Rhombohedral H-M Symbol ( 3 ) Space Group: R 3
X Ray Diffraction:
By Intensity(I/Io ): 2.952(1), 2.622(0.68), 4.506(0.65),
Physical Properties of Yedlinite
Cleavage:
{1120} Distinct
Color:
Red violet.
Density:
5.85
Diaphaneity:
Transparent to Translucent
Fracture:
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Hardness:
2.5 - Finger Nail
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Yedlinite
Gladstone-Dale:
CI meas = -0.074 (Fair) - where the CI = (1-KPDmeas /KC ) CI calc = -0.086 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1886,KPDmeas = 0.1867,KC = 0.1737 Ncalc = 2.01 - 2.02
Optical Data:
Uniaxial (-), e=2.059, w=2.125, bire=0.0660.
Calculated Properties of Yedlinite
Electron Density:
Bulk Density (Electron Density)=4.89 gm/cc note: Specific Gravity of Yedlinite =5.85 gm/cc.
Fermion Index:
Fermion Index = 0.17 Boson Index = 0.83
Photoelectric:
PEYedlinite =1,396.88 barns/electronU=PEYedlinite x r Electron Density=6,825.05 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Yedlinite is Not Radioactive
Yedlinite Classification
Dana Class:
10.06.03.01 (10) Oxyhalides and Hydroxyhalides
(10.06) where Am Bn (O,OH)p Xq
(10.06.03) Dana Group
10.06.03.01 Yedlinite Pb6CrCl6(O,OH)8 R 3 3
Strunz Class:
03.DB.50 03 - HALIDES
03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
03.DB -With Pb, Cu, etc.
03.DB.50 Yedlinite Pb6CrCl6(O,OH)8 R 3 3
Other Yedlinite Information
References:
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Yedlinite :
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
15 - WWW-MINCRYST
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Yedlinite
Pb6CrCl6(O,OH)8
Dana No: 10.06.03.01 Strunz No: 03.DB.50
Locality:
Notes:
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