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Lead Mineral Data
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General Lead Information
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 Chemical Formula: |
Pb |
| Composition: |
Molecular Weight = 207.20 gm |
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Lead 100.00 % Pb |
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______ |
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100.00 % |
| Empirical Formula: |
Pb |
| Environment: |
Rare mineral of hydrothermal origin, and found in placers; possibly also formed by authigenic processes and known to replace tree roots. |
| IMA Status: |
Valid Species (Pre-IMA) Prehistoric |
| Locality: |
Langban, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Anglo-Saxon, lead; Latin plumbum. |
| Name Pronunciation: |
Lead  |
| Synonym: |
ICSD 64808 |
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PDF 4-686 |
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Plumbum |
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Lead Image |
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Images:
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Lead
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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Images:
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Lead
Comments: Irregular mass of native lead from a lead-zinc-silver ore deposit.
Location: Broken Hill, NSW, Australia.
Scale: 8 cm across.
© Dave Barthelmy |
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Lead Crystallography
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| Cell Dimensions: |
a = 4.9505, Z = 4; V = 121.32 Den(Calc)= 11.34 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.855(1), 2.475(0.5), 1.493(0.32), |
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Physical Properties of Lead
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| Cleavage: |
None |
| Color: |
Lead gray, Gray white. |
| Density: |
11.37 |
| Diaphaneity: |
Opaque |
| Fracture: |
Malleable - Deforms rather than breaking apart with a hammer. |
| Habit: |
Blocky - Crystal shape tends to be equant (e.g. feldspars). |
| Hardness: |
2-2.5 - Gypsum-Finger Nail |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Nonmagnetic |
| Streak: |
lead gray |
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Optical Properties of Lead
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| RL Color: |
Gray-white with a brownish tint and brownish red internal reflections. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Lead in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
45.60 |
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| 420 nm |
45.90 |
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| 440 nm |
46.20 |
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| 460 nm |
46.50 |
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| 480 nm |
46.90 |
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| 500 nm |
47.40 |
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| 520 nm |
48.10 |
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| 540 nm |
48.90 |
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| 560 nm |
49.70 |
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| 580 nm |
50.40 |
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| 600 nm |
51.00 |
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| 620 nm |
51.70 |
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| 640 nm |
52.50 |
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| 660 nm |
53.60 |
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| 680 nm |
55.20 |
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| 700 nm |
57.90 |
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Calculated Relative Intensity Colors of Lead in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R |
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Calculated Properties of Lead
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| Electron Density: |
Bulk Density (Electron Density)=8.98 gm/cc
note: Specific Gravity of Lead =11.3 gm/cc.
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| Fermion Index: |
Fermion Index = 0.22
Boson Index = 0.78 |
| Photoelectric: |
PELead =1,939.41 barns/electron
U=PELead x rElectron Density=17407.53 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lead is Not Radioactive |
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Lead Classification
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| Dana Class: |
01.01.01.04 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.01)Gold group |
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01.01.01.01 Gold Au F m3m 4/m 3 2/m |
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01.01.01.02 Silver Ag F m3m 4/m 3 2/m |
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01.01.01.03 Copper Cu F m3m 4/m 3 2/m |
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01.01.01.04 Lead Pb F m3m 4/m 3 2/m |
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01.01.01.05 Aluminum Al F m3m,P m3m 4/m 3 2/m |
| Strunz Class: |
01.AA.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AA -Copper-cupalite family |
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01.AA.05 Aluminum Al F m3m,P m3m 4/m 3 2/m |
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01.AA.05 Copper Cu F m3m 4/m 3 2/m |
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01.AA.05 Lead Pb F m3m 4/m 3 2/m |
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01.AA.05 Gold Au F m3m 4/m 3 2/m |
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01.AA.05 Nickel Ni F m3m 4/m 3 2/m |
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01.AA.05 Silver Ag F m3m 4/m 3 2/m |
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Other Lead Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| 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
20 - WWW-MINCRYST
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Print or Cut-and-Paste your Lead Specimen Label here :
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Lead
Pb
Dana No: 01.01.01.04 Strunz No: 01.AA.05
Locality:
Notes:
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