Mineralogy Database

Lead Mineral Data

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General Lead Information

Help on Chemical  Formula: Chemical Formula: Pb
Help on Composition: Composition: Molecular Weight = 207.20 gm
   Lead 100.00 %  Pb
        100.00 % 
Help on Empirical Formula: Empirical Formula: Pb
Help on Environment: Environment: Rare mineral of hydrothermal origin, and found in placers; possibly also formed by authigenic processes and known to replace tree roots.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) Prehistoric
Help on Locality: Locality: Langban, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Anglo-Saxon, lead; Latin plumbum.
Help on Name Pronunciation: Name Pronunciation: Lead Say LEAD
Help on Synonym: Synonym: ICSD 64808
  PDF 4-686

Lead Image

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Comments: Native lead sheet partially covering an actinolite schist.
Location: Garpenberg Norra, Hedemorra, Sweden. Scale: 7.5 x 4.5 cm.
© John Veevaert

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Comments: Irregular mass of native lead from a lead-zinc-silver ore deposit.
Location: Broken Hill, NSW, Australia. Scale: 8 cm across.
© Dave Barthelmy

Lead Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 4.9505, Z = 4; V = 121.32 Den(Calc)= 11.34
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.855(1), 2.475(0.5), 1.493(0.32),

Physical Properties of Lead

Help on Cleavage: Cleavage: None
Help on Color: Color: Lead gray, Gray white.
Help on Density: Density: 11.37
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Malleable - Deforms rather than breaking apart with a hammer.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: lead gray

Optical Properties of Lead

Help on RL Color: RL Color: Gray-white with a brownish tint and brownish red internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Lead in Air
λ R  ∑ R(λ) 
 400 nm   45.60   
 420 nm   45.90 
 440 nm   46.20 
 460 nm   46.50 
 480 nm   46.90 
 500 nm   47.40 
 520 nm   48.10 
 540 nm   48.90 
 560 nm   49.70 
 580 nm   50.40 
 600 nm   51.00 
 620 nm   51.70 
 640 nm   52.50 
 660 nm   53.60 
 680 nm   55.20 
 700 nm   57.90 
Calculated Relative Intensity Colors of Lead in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%

Calculated Properties of Lead

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=8.98 gm/cc
note: Specific Gravity of Lead =11.3 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.22
Boson Index = 0.78
Help on Photoelectric: Photoelectric: PELead =1,939.41 barns/electron
U=PELead x rElectron Density=17407.53 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lead is Not Radioactive

Lead Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.01)Gold group Gold Au F m3m 4/m 3 2/m Silver Ag F m3m 4/m 3 2/m Copper Cu F m3m 4/m 3 2/m Lead Pb F m3m 4/m 3 2/m Aluminum Al F m3m,P m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 01.AA.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AA -Copper-cupalite family
01.AA.05 Aluminum Al F m3m,P m3m 4/m 3 2/m
01.AA.05 Copper Cu F m3m 4/m 3 2/m
01.AA.05 Lead Pb F m3m 4/m 3 2/m
01.AA.05 Gold Au F m3m 4/m 3 2/m
01.AA.05 Nickel Ni F m3m 4/m 3 2/m
01.AA.05 Silver Ag F m3m 4/m 3 2/m

Other Lead Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Lead :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - Franklin Minerals(Dunn)
7 - Franklin Minerals(Palache)
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineral and Gemstone Kingdom
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - Scandinavian mineral gallery

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Dana No: Strunz No: 01.AA.05





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