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General Litharge Information |
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 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  |
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| Synonym: |
ICSD 62842 | ||
| PDF 5-561 | |||
Litharge Image | |||
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Images:
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Litharge Crystallography |
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| 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 DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.115(1), 2.809(0.62), 1.872(0.37), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Litharge |
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| 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 |
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| 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 |
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| Optical Data: |
Uniaxial (-), e=2.535, w=2.665, bire=0.1300. | ||
Calculated Properties of Litharge |
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| Electron Density: |
Bulk Density (Electron Density)=7.52 gm/cc note: Specific Gravity of Litharge =9.33 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.2 Boson Index = 0.8 |
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| Photoelectric: |
PELitharge =1,767.06 barns/electron U=PELitharge x rElectron Density=13295.73 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Litharge is Not Radioactive |
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Litharge Classification |
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| Dana Class: |
04.02.04.01 (04)Simple Oxides | ||
| (04.02)with a cation charge of 2+ (A++ O) | |||
| (04.02.04)Dana Group | |||
| 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 (± smaller ones) | |||
Other Litharge Information |
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| 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 Search for Litharge using: Visit our Advertisers for Litharge : A Bijoux Google Search for LithargeAdam's Minerals Google Search for Litharge Cape Minerals Google Search for Litharge Dakota Matrix Minerals Google Search for Litharge Excalibur Mineral Corp. Google Search for Litharge Exceptional Minerals Google Search for Litharge John Betts Fine Minerals Search for Litharge McDougall Minerals Google Search for Litharge Mineral News Website Link Rock and Mineral Shows Google Search for Litharge Weinrich Minerals, Inc. Google Search for Litharge Ask about Litharge here : Print or Cut-and-Paste your Litharge Specimen Label here :
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