Mineralogy Database

Leadamalgam Mineral Data

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General Leadamalgam Information

Help on Chemical  Formula: Chemical Formula: HgPb2
Help on Composition: Composition: Molecular Weight = 614.99 gm
   Mercury  32.62 %  Hg
   Lead     67.38 %  Pb
           100.00 % 
Help on Empirical Formula: Empirical Formula: HgPb2
Help on Environment: Environment: In heavy concentrates of crushed ores from a platinum-bearing Cu-Ni sulfide deposit.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Shiaonanshan, Inner Mongolia Autonomous region, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the natural alloy of lead and mercury.
Help on Name Pronunciation: Name Pronunciation: Leadamalgam + Pronunciation Say LEADAMALGAM
Help on Synonym: Synonym: Altmarkite

Leadamalgam Image

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Comments: Dark gray coatings of leadamalgam on weathered ore rock.
Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Leadamalgam Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.27644
Help on Cell Dimensions: Cell Dimensions: a = 3.545, c = 4.525, Z = 1; V = 56.87 Den(Calc)= 17.96
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.4(1), 1.49(1), 2.49(0.5),

Physical Properties of Leadamalgam

Help on Color: Color: Silver white.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luster: Luster: Metallic

Optical Properties of Leadamalgam

Help on RL Color: RL Color: Yellowish white.
Help on RL Pleochroism: RL Pleochroism: Weak, bluish gray to pale bluish gray.

Calculated Properties of Leadamalgam

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=14.3 gm/cc
note: Specific Gravity of Leadamalgam =18.0 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.24
Boson Index = 0.76
Help on Photoelectric: Photoelectric: PELeadamalgam =1,885.33 barns/electron
U=PELeadamalgam x rElectron Density=26868.57 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Leadamalgam is Not Radioactive

Leadamalgam Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.10)Lead Amalgam Alloys Leadamalgam HgPb2 I 4/mmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 01.AD.30 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AD -Mercury-amalgam family
01.AD.30 Leadamalgam HgPb2 I 4/mmm 4/m 2/m 2/m

Other Leadamalgam 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 Leadamalgam :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 01.AD.30





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