Litharge Mineral Data

General Litharge Information

Chemical Formula:

PbO

Composition:

Molecular Weight = 223.20 gm

Lead 92.83 % Pb 100.00 % PbO

Oxygen 7.17 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbO

Environment:

Dimorphous with massicot.

IMA Status:

Valid Species (Pre-IMA) 1917

Locality:

Cucamonga Peak, San Bernardino Co., California, USA. Link to MinDat.org Location Data.

Name Origin:

Named in 1917 from a Greek word given by Diocorides to a material obtained in the process of separating lead from silver by pyrometallurgy.

Name Pronunciation:

Litharge

Synonym:

ICSD 62842

PDF 5-561

Litharge Image

Images:

Litharge Massicot

Comments: Dark red litharge with brownish-yellow scaly massicot and white cerussite.
Location: Patagonia, Santa Cruz County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Litharge Crystallography

Axial Ratios:

a:c = 1:1.26332

Cell Dimensions:

a = 3.976, c = 5.023, Z = 2; V = 79.41 Den(Calc)= 9.33

Crystal System:

Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm

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

By Intensity(I/I_o): 3.115(1), 2.809(0.62), 1.872(0.37),

Physical Properties of Litharge

Cleavage:

{110} Distinct

Color:

Red.

Density:

9.14 - 9.355, Average = 9.24

Diaphaneity:

Transparent

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Greasy (Oily)

Streak:

red

Optical Properties of Litharge

Gladstone-Dale:

CI meas= -0.301 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.289 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1715,KPDmeas= 0.173,KC= 0.133
Ncalc = 2.22 - 2.24

Optical Data:

Uniaxial (-), e=2.535, w=2.665, bire=0.1300.

Calculated Properties of Litharge

Electron Density:

Bulk Density (Electron Density)=7.52 gm/cc
note: Specific Gravity of Litharge =9.33 gm/cc.

Fermion Index:

Fermion Index = 0.2
Boson Index = 0.8

Photoelectric:

PE_Litharge=1,767.06 barns/electron
U=PE_Litharge x rElectron Density=13295.73 barns/cc.

Radioactivity:

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

Litharge Classification

Dana Class:

04.02.04.01 (04)Simple Oxides

(04.02)with a cation charge of 2+ (A++ O)

(04.02.04)Dana Group

04.02.04.01 Litharge PbO P 4/nmm 4/m 2/m 2/m

Strunz Class:

04.AC.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.A - Metal:Oxygen = 2.1 and 1:1

04.AC -M:O = 1:1 (and up to 1:1.25); with large cations (ï¿½ smaller ones)

04.AC.20 Litharge PbO P 4/nmm 4/m 2/m 2/m

04.AC.20 Romarchite SnO P 4/nmm 4/m 2/m 2/m

Other Litharge Information

References:

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

See Also:

Links to other databases for Litharge :
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 - Scandinavian mineral gallery
16 - WWW-MINCRYST

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

Litharge

PbO
Dana No: 04.02.04.01 Strunz No: 04.AC.20
Locality:

Notes:

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