Leadamalgam Mineral Data

Leadamalgam Mineral Data +

General Leadamalgam Information

Chemical Formula:

HgPb2

Composition:

Molecular Weight = 614.99 gm

Mercury 32.62 % Hg

Lead 67.38 % Pb

______

100.00 %

Empirical Formula:

HgPb₂

Environment:

In heavy concentrates of crushed ores from a platinum-bearing Cu-Ni sulfide deposit.

IMA Status:

Approved IMA 1985

Locality:

Shiaonanshan, Inner Mongolia Autonomous region, China. Link to MinDat.org Location Data.

Name Origin:

Named as the natural alloy of lead and mercury.

Synonym:

Altmarkite

Leadamalgam Image

Images:

Leadamalgam

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

Axial Ratios:

a:c = 1:1.27644

Cell Dimensions:

a = 3.545, c = 4.525, Z = 1; V = 56.87 Den(Calc)= 17.96

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm

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

By Intensity(I/I_o): 1.4(1), 1.49(1), 2.49(0.5),

Physical Properties of Leadamalgam

Color:

Silver white.

Diaphaniety:

Opaque

Hardness:

1.5 - Between Talc and Gypsum

Luster:

Metallic

Optical Properties of Leadamalgam

RL Color:

Yellowish white.

RL Pleochroism:

Weak, bluish gray to pale bluish gray.

Calculated Properties of Leadamalgam

Electron Density:

r_electron=14.3 gm/cc
note: r_Leadamalgam=18.0 gm/cc.

Fermion Index

Fermion Index = 0.24741
Boson Index = 0.75259

Photoelectric:

PE_Leadamalgam=1,885.33 barns/electron
U=PE_Leadamalgam x r_electron=26868.56 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Leadamalgam is Not Radioactive

Leadamalgam Classification

Dana Class:

1.1.10.1 (1)Native Elements

(1.1)with metallic elements other than the platinum group

(1.1.10)Lead Amalgam Alloys

1.1.10.1 Leadamalgam HgPb2 I 4/mmm 4/m 2/m 2/m

Strunz Class:

I/A.02-100 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.02 - Mercury and Amalgame series

I/A.02-10 Mercury Hg R 3m 3 2/m

I/A.02-20 Kolymite Cu7Hg6 I 43m 4 3m

I/A.02-22 Belendorffite Cu7Hg6 R 3m 3m

I/A.02-28 Eugenite Ag9Hg2 I 43m 4 3m

I/A.02-30 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m

I/A.02-40 Luanheite Ag3Hg P 6₃/mmc 6/m 2/m 2/m

I/A.02-50 Schachnerite Ag1.1Hg0.9 P 6₃/mmc 6/m 2/m 2/m

I/A.02-60 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m

I/A.02-70 Goldamalgam* (Au,Ag)Hg I m3m 4/m 3 2/m

I/A.02-80 Weishanite (Au,Ag)3Hg2 P 6₃/mmc 6/m 2/m 2/m

I/A.02-90 Potarite PdHg P 4/mmm 4/m 2/m 2/m

I/A.02-100 Leadamalgam HgPb2 I 4/mmm 4/m 2/m 2/m

Other Leadamalgam Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Leadamalgam :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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

Leadamalgam

HgPb2
Dana No: 1.1.10.1 Strunz No: I/A.02-100
Locality:

Notes: