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 % H₂O

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:

Pb₆CrCl₆O₆(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 Diaboleite

Comments: Minute cranberry-colored rounded yedlinite crystal with blue diaboleite on yellow-brown wulfenite.
Location: Mammoth Mine, Tiger, Pinal County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

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

By Intensity(I/I_o): 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:

PE_Yedlinite=1,396.88 barns/electron
U=PE_Yedlinite x rElectron 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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Print or Cut-and-Paste your Yedlinite Specimen Label here :

Yedlinite

Pb6CrCl6(O,OH)8
Dana No: 10.06.03.01 Strunz No: 03.DB.50
Locality:

Notes:

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